Table of Contents

Page -1-

Channel Number

0 100 200 300 400 500 600 700 800 900 1000

Co

un

ts/C

ha

nn

el

101

102

103

104

105

106

107

108

1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

334

(227 T

h)

227Ac(21 yr.)8/29/2000

HPGe: 50 mm dia. x 20 mmno external absorber

embedded in 1.6 um plastic20 cm

A209070001low energy portion

24 29(22

7 Th

)/29(

227 T

h)

31(22

7 Th

)

43(22

7 Th

)/43

(227 T

h)

49(227Th)/

50(227Th)/

50(223Fr)

65(21

1 Pb

)62

(227 T

h)/

62(22

7 Th

)61

(227 T

h)

Pb

Kα2

/Tl K

α1T

l Kα2

Bi K

α2/P

b K

α1P

o K

α2/B

i Kα1

79(22

7 Th

)/P

o K

α1

Rn

Kα1

Ra

Kα2

Ra

Kα1

/Bi K

β1B

i Kβ2

Po

Kβ2

Rn

Kβ2

Ra

Kβ3

/Ra

Kβ1

141(

227 T

h)/1

41(22

7 Th

)

117(

227 T

h)

122(

223 R

a)

130(

219 R

n)

144(

223 R

a)

154(223Ra)

235(227Th)

256(227Th)

269(223Ra) 271

(219Rn)

371(223Ra)

351(211Bi)

338(223Ra)

329(227Th)

323(223Ra)

300(227Th)/300(227Th)

285(227Th)/286(227Th)

158(

223 R

a)

177(

223 R

a)/1

77(22

3 Ra)

179(

223 R

a)

184(

227 T

h)

113(

227 T

h)/

113(

227 T

h)

Rn

Kα2

Rn

Kβ1

204(

227 T

h)/

204(

223 F

r)/2

05(22

7 Th

)20

1(22

7 Th

)

206(

227 T

h)

210(

227 T

h)

212(

227 T

h)

219(

227 T

h)/

219(

227 T

h)

221(

219 R

n)

234(

227 T

h)/

234(

223 F

r)

250(

227 T

h)/

250(

227 T

h)

254(

227 T

h)

252(

227 T

h)

262(

227 T

h)

279(

227 T

h)

284(

227 T

h)

281(

227 T

h)/

281(

227 T

h)

289(

227 T

h)/2

89(22

7 Th

)/28

9(22

3 Fr)

288(

223 R

a)29

2(22

7 Th

)29

3(21

9 Rn

)

304(

227 T

h)

308(

227 T

h)

319(

227 T

h)/

319(

223 F

r)

312(

227 T

h)

314(

227 T

h)/

314(

227 T

h)

326(

227 T

h)

328(

223 R

a)

342(

227 T

h)/

342(

223 R

a)34

6(22

7 Th

)35

0(22

7 Th

)

382(

227 T

h)/

382(

223 R

a)

376(

223 R

a)

383(

227 T

h)

388(

223 R

a)

362(

211 P

b)/

362(

227 T

h)

296(

227 T

h)

x100

Th, Ra, Rn, Po, & PbL x-rays

Lα

Lβ

Lγ

Ge

K x

-ray

esc

ape

pea

k

Th, Ra, Rn, Po, Pb, Bi, & Tl K x-rays

Th

Kβ1

/(/22

3 Ra)

Ra

Kβ2

93(22

7 Th

)/R

n K

β3

110(

223 R

a)

134(

227 T

h)

272(

227 T

h)

352(

227 T

h)

373(

223 R

a)

390(

223 R

a)

369(

223 F

r)

Table of Contents

Page -2-

Channel Number

2000 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000

Co

un

ts/C

ha

nn

el

100

101

102

103

104

105

106

5000 5250 5500 5750 6000 6250 6500 6750 7000 7250 7500 7750 8000

227Ac(21 yr.)8/29/2000

HPGe: 50 mm dia. x 20 mmno external absorber

embedded in 1.6 um plastic20 cm

A209070001high energy portion

ann

rad

401(219Rn)

432(

227 T

h)/

432(

223 R

a)43

8(21

5 Po

)/43

8(21

9 Rn

)/43

8(22

3 Ra)

404(211Pb)

427(211Pb)

445(223Ra)

704(211Pb)

766(211Pb)

832(211Pb)

897(207Tl)

1109(211Pb)

430(

223 R

a)/4

30(21

1 Pb

)

517(

219 R

n)

527(

223 R

a)

609(

223 R

a)/6

09(21

1 Pb

)/b

kg.

598(

223 R

a)

bkg

.

711(

223 R

a)

676(

219 R

n)/

676(

211 P

b)

775(

211 P

b)

812(

227 T

h)

865(

211 P

b)

823(

227 T

h)

908(

227 T

h)

1014

(211 P

b)

1080

(211 P

b)

1103

(211 P

b)

1270

(211 P

b)

1196

(211 P

b)

bkg

.

bkg

.

bkg

.

x10

487(

223 R

a)

757(

227 T

h)/

757(

223 F

r)

803(

227 T

h)/

803(

223 F

r)

bkg

.

846(

223 F

r)

Table of Contents

Page -3-

Channel Number

0 100 200 300 400 500 600 700 800 900 1000

Cou

nts/

Cha

nnel

101

102

103

104

105

106

107

1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

K x-rays of Pb thru Th

235(227Th)

256(227Th)

401(219Rn)

404(211Pb)

427(211Pb)

445(223Ra)

704(211Pb)

50(22

7 Th

)

113(

227 T

h)/

113(

227 T

h)

117(

227 T

h)

122(

223 R

a)13

0(21

9 Rn

) 144(

223 R

a)

154(

223 R

a)15

8(22

3 Ra)

179(

223 R

a)18

4(22

3 Fr)

210(

227 T

h)

219(

227 T

h)/

219(

227 T

h)

262(

227 T

h)

279(

227 T

h)

296(

227 T

h)

334(

227 T

h)

342(

227 T

h)

517(

219 R

n)

527(

223 R

a)

bkg

. 598(

223 R

a)

609(

223 R

a)/6

09(21

1 Pb

)

676(

219 R

n)/

676(

211 P

b)

371(

223 R

a)

382(

223 R

a)/3

83(22

7 Th

)

432(

223 R

a)/4

32(22

7 Th

)

362(

223 R

a)/3

62(21

1 Pb

)

351(211Bi)

227Ac(21 yr.)in secular equilibrium

6-17-1971Ge(Li): 35 cm3 coaxial

no absorber5 cm

89-227-1low energy portion

x100

79(22

7 Th

)/

Po

Kα2

x-r

ay

300(227Th)/300(227Th)

323(

223 R

a)

314(

227 T

h)/

314(

227 T

h)

312(

227 T

h)

304(

227 T

h)

286(

227 T

h)

289(

227 T

h)

319(

227 T

h)

293(

223 R

a)/2

93(22

1 Rn

)

254(

227 T

h)

250(

227 T

h)/

250(

227 T

h)

269(223Ra) 271

(219Ra)

362(

227 T

h)/

362(

211 P

b)

Rn

Kα1

Ra

Kα1

Rn

Kβ1

/Kβ3

Rn

Kβ2

Ra

Kβ1

/Kβ3

Ra

Kβ2

134(

227 T

h)

438(

219 R

n)/

439(

223 R

a)/

439(

215 P

o)

141(

227 T

h)/

141(

227 T

h)

212(

227 T

h)

206(

227 T

h)

205(

227 T

h)

204(

227 T

h)

338(

223 R

a)

329(

227 T

h)

94N

b

Table of Contents

Page -4-

Channel Number

2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

Cou

nts/

Cha

nnel

100

101

102

103

104

105

3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000

Bkg

.

Bkg

.

Bkg

.

Bkg

.

Bkg

.

Bkg

.

Bkg

.

766(211Pb)

832(211Pb)

1109(211Pb)

897(207Tl)

1014

(211 P

b)

1196

(211 P

b)

1270

(211 P

b)

227Ac(21 yr.)6-17-19971

Ge(Li): 35 cm3 coaxialno absorber

5 cm89-227-1

high energy portion

1080

(211 P

b)

1103

(211 P

b)

94N

b

Bkg

.

x10

865(

211 P

b)

Table of Contents

Page -5-

�-

decay

�-

decay

�-

decay

98.62%-

decay�

99.994%-

decay�

0.000 23%-

decay�

0.276%-

decay�

� �97%-

decay

� decay

� decay

� decay

1.380% decay�

0.006% decay�

99.999 77% decay�

99.724% decay�

� �3 % decay

� decay

� decay

Fr223

(22 min.)

At219(56 sec.)

Bi215

(7.6 min.)

At215

(0.10 msec.)

Pb207

(stable)

Po215

(1.7 msec.)

Bi211

(2.1 min.)

Po211

(0.51 sec.)Tl207

(4.7 min.)

Th227

(18 day)

Ra223

(11 day)

Rn219

(3.9 sec.)

Pb211

(36 min.)

Ac227

(21 yr.)

227Ac Decay Chain

Table of Contents

Page -6-

Fr22387

Ac22789

Th22790

21.8 min.

3/2- 0.0

21.773 yr.

98.620%-

decay�1.380% decay�

Q - =44.1�

Q =5043.0�

18.72 day

0.00.0

9.3

24.5

(1/2+)

(5/2+)

(3/2+)

�54

�35

�10

9.3

15

.2

24

.512.78

55.5

81.99

100

134.31

160.26171.90188.78

241.7

12

.7

55

.03

69

.21

82

10

0

10

6.7

9

12

1.5

3

13

4

14

7.4

8

16

0.2

6

17

1.9

0

24

1.7

3/2(-)

(-)

(-)

(+)

Based on 2/15/2000 NNDC/BNL Data

Based on 8/5/1999 NNDC/BNL Data

0.658

0.546

0.0015

0.087

0.08

0.001

0.0140.0010.025

0.005

GAMMA-RAY ENERGIES AND INTENSITIES

Nuclide: 227Ac Half Life: 21.773(3) yr.

E� (keV) ��E

� �I

� �

�I� Level

9.3 0.1 9.3 ���

12.7 12.78 ��

15.2 0.1 24.5 ���

24.5 0.2 24.5 ���

55.03 0.000 98 �� 55.5 ��

69.21 0.04 0.006 6 0.000 6 81.99 ��

82 �� 0.001 26 �� 81.99 ��

100 �� 0.009 2 �� 100 ��

106.79 0.06 0.001 34 0.000 14 188.78 ��

121.53 0.04 0.002 16 0.000 22 134.31 ��

134 �� 134.31 ��

147.48 0.04 0.003 1 0.000 3 160.26 ��

160.26 0.05 0.005 9 0.000 6 160.26 ��

171.90 0.08 0.001 29 0.000 14 171.90 ��

241.7 0.2 0.001 65 �� 241.7 ��

E�, �E

�, I�, �I

�, Levels from ENSDF Database as of August 5, 1999

��These I��

are per 100 Decays of 227Ac

��For � decay total uncertainty add 28% systematic component in quadrature, using normalization factor 0.00028(8).

227Ac (21.773 yr.) Decay Scheme

Table of Contents

Page -7-

0.0

Fr22387

11.435 dayRa

22388

296.4

314.6

0307.9

2352.6

382.3

401.9

29.84

50.10761.43

79.654

123.80

234.79

280.24286.02

329.83334.31342.41

376.0

431.79

(5/2)+�1

3/2-67(7/2)+

(5/2)-16

(7/2-)

(5/2)+10.1

(7/2+)1/2+0.026

3/2-0.0775/2+0.0363/2+0.047

(7/2)-0.0022

(5/2-)0.009

3/2+�1

787.22792.2

803.78823.20826.50842.11858.05867.38

907.6926.45

943.2

972.1

999.71019.31024.4

0.0210.12

0.007

0.0041

0.00100.0008

�0.0003

0.0190.0008

0.140.019

0.580.0390.0090.012

556.3

607.6

762.5

7780.8

1812.4

0842.2

516.7

524.8

859.18

37.5

0867.4

475.4

0907.6

596.9

84

6.9

876.5

0896.7

926.5

863.6

893.1

911.3

941.2

624.2

969.2

999.3

958.0

989.4

994.3

1025.1

452.9

506.9

552.3

736.9

757.2

0787.6

792.2

568.9

9724.1

5753.6

58

03

.77

480.9

493.4

0537.1

5588.1

823.2

0746.3

07

75

.83

796.2

2825.9

5

3/2(-) 0.0

21.8 min

Q=1147.6

99.994%-

decay�

Based on 8/5/1999 NNDC/BNL Data

223Fr (21.8 min.) Decay SchemePart 1 of 2

Table of Contents

Page -8-

(5/2)-1.8

0.0

11.435 dayRa

22388

29.84

50.10761.43

79.654

123.80

234.79

280.24286.02

329.83334.31342.41

376.0

431.79

(5/2)+�1

3/2-67(7/2)+

(5/2)-16

(7/2-)

(5/2)+10.1

(7/2+)1/2+0.026

3/2-0.0775/2+0.0363/2+0.047

(7/2)-0.0022

(5/2-)0.009

3/2+�1

296.4

314.6

0307.9

2352.6

382.3

401.9

Fr22387

3/2(-) 0.0

21.8 min

Q=1147.6

99.994%-

decay�

369.38

29.7

820.2

65

50

.10

431

61

29.6

049.8

979.6

51

62.3

194.0

5173.3

7184.6

82

04

.95

23

4.8

0200.7

0218.8

0250.2

5256.1

7286.0

0250.2

5299.9

5329.8

0254.6

0272.8

334.3

0262.9

0

312.6

5342.5

034.9

91

134.6

22

89

.68

307.9

23

19

.26

339.5

03

69

.34

304.4

0Based on 8/5/1999 NNDC/BNL Data

223Fr (21.8 min.) Decay SchemePart 2 of 2

Table of Contents

Page -9-

GAMMA-RAY ENERGIES AND INTENSITIES (page 1 of 3)

Nuclide: 223Fr E , E , I , I , Levels- from ENSDF Database as of August 25, 1999 Half Life: 21.8(4) min.

E (keV) E I I Level E (keV) E I I Level

These I are per 100 Decays of

223Fr. For

227Ac parent, multiply these values by 0.0138

For total uncertainty add systematic component of 20% in quadrature, based on the normalization factor 0.030(6)

15 3

19.102 0.015 0.111 0.018

20.265 0.016 0.8 0.3 50.107

24.136 0.023 0.29 0.04

27.268 0.030 0.066 0.012

29.60 0.03 0.024 79.654

29.78 0.03 0.054 0.012 29.84

31 61.43

34.991 0.055 0.004 5 0.002 1 369.38

37.90 0.02 0.007 5 0.001 8

49.89 0.07 2.7 0.9 79.654

50.104 0.005 36.0 2.1 50.107

57.07 0.06 0.007 2 0.002 1

59.36 0.06 0.006 3 0.002 1

61 61.43

62.31 0.06 0.018 0.006 123.80

65.12 0.06 0.039 0.006

79.651 0.005 9.1 0.4 79.654

94.05 0.05 0.039 0.006 123.80

111.05 0.03 0.005 7 0.000 6

134.62 0.02 0.501 0.015 369.38

144.1 0.1 0.001 68 0.000 21

150.6 0.4 0.002 16 0.000 15

173.37 0.03 0.111 0 0.000 9 234.79

184.68 0.03 0.219 6 0.001 8 234.79

200.70 0.05 0.005 4 0.000 9 280.24

204.95 0.02 0.948 0.012 234.79

210.60 0.05 0.009 3 0.000 3

214.3 0.1 0.001 8 0.000 3

218.80 0.05 0.009 6 0.000 6 280.24

222.9 0.1 0.004 5 0.001 5

234.80 0.01 3.00 234.79

245.60 0.05 0.021 0 0.001 5

250.25 0.06 0.020 4 0.000 9 280.24

250.25 0.06 0.020 4 0.001 2 329.83

254.60 0.05 0.006 3 0.000 9 334.31

256.17 0.05 0.022 5 0.001 2 286.02

262.90 0.15 0.004 5 0.001 2 342.41

269.6 0.2 0.002 0 0.000 4

272.8 0.1 0.004 5 0.000 9 334.31

286.00 0.05 0.004 5 0.000 9 286.02

289.68 0.05 0.228 0.009 369.38

293.15 0.05 0.003 3 0.000 3

296.4 1.9 0.000 48 0.000 06 376.0

299.95 0.05 0.022 5 0.001 5 329.83

304.40 0.05 0.009 6 0.000 9 334.31

307.92 0.05 0.013 8 0.000 9 369.38

307.92 0.05 0.013 8 0.000 9 431.79

312.65 0.05 0.017 7 0.001 2 342.41

314.60 0.10 0.001 8 0.000 3 376.0

319.26 0.02 0.501 0.015 369.38

329.80 0.05 0.027 0 0.002 1 329.83

334.30 0.06 0.009 9 0.000 9 334.31

339.50 0.06 0.070 0.005 369.38

342.50 0.07 0.013 5 0.001 2 342.41

352.6 0.2 0.000 21 0.000 12 431.79

369.34 0.05 0.103 0.005 369.38

382.3 0.2 0.000 51 0.000 09 431.79

401.9 0.1 0.000 69 0.000 09 431.79

434.4 0.1 0.002 4 0.000 4

439.6 0.3 0.000 33 0.000 15

444.5 0.3 0.000 54 0.000 15

452.9 0.2 0.001 98 0.000 18 787.22

469.33 0.08 0.002 2 0.000 4

475.40 0.07 0.006 3 0.000 3 907.6

480.9 0.1 0.001 35 0.000 18 823.20

493.40 0.15 0.002 7 0.000 3 823.20

506.9 0.1 0.002 4 0.000 9 787.22

516.7 0.1 0.003 6 0.000 6 858.05

524.8 0.1 0.005 1 0.000 9 858.05

Table of Contents

Page -10-

GAMMA-RAY ENERGIES AND INTENSITIES (page 2 of 3)

Nuclide: 223Fr E , E , I , I , Levels- from ENSDF Database as of August 25, 1999 Half Life: 21.8(4) min.

E (keV) E I I Level E (keV) E I I Level

These I are per 100 Decays of

223Fr. For

227Ac parent, multiply these values by 0.0138

For total uncertainty add systematic component of 20% in quadrature, based on the normalization factor 0.030(6)

533.1 0.1 0.002 1 0.000 3

537.15 0.08 0.005 4 0.000 9 823.20

539.80 0.08 0.006 0 0.000 6

545.4 0.4 0.000 33 0.000 15

552.3 0.1 0.003 3 0.000 3 787.22

556.3 0.2 0.001 56 0.000 18 842.11

568.99 0.07 0.051 0.003 803.78

576.1 0.4 0.001 2 0.000 3

581.3 0.4 0.001 5 0.000 3

588.1 0.2 0.000 75 0.000 18 823.20

592.30 0.15 0.003 0 0.000 6

596.9 0.2 0.000 99 0.000 15 926.45

600.7 0.3 0.000 60 0.000 15

607.6 0.3 0.003 3 0.001 5 842.11

613.6 0.3 0.002 1 0.000 6

624.2 0.3 0.000 51 0.000 12 999.7

632.65 0.15 0.002 1 0.000 5

663.7 0.3 0.001 5 0.000 3

671.9 0.3 0.000 9 0.000 3

682.30 0.25 0.000 54 0.000 09

694.6 0.3 0.000 54 0.000 09

708.3 0.3 0.001 5 0.000 3

722.65 0.05 0.038 7 0.002 7

724.15 0.05 0.016 2 0.000 6 803.78

736.9 0.2 0.000 60 0.000 09 787.22

738.7 0.2 0.000 60 0.000 12

742.37 0.08 0.001 20 0.000 15

746.30 0.05 0.021 9 0.001 8 826.50

753.65 0.05 0.010 5 0.000 6 803.78

753.65 0.05 0.010 5 0.000 6

757.20 0.05 0.008 4 0.000 9 787.22

762.57 0.05 0.002 7 0.000 3 842.11

766.64 0.05 0.023 7 0.001 8

775.83 0.05 0.477 0.024 826.50

780.81 0.06 0.003 0 0.000 3 842.11

784.93 0.05 0.009 3 0.000 3

787.6 0.1 0.002 7 0.000 3 787.22

792.2 0.1 0.000 75 0.000 15 792.2

796.22 0.05 0.011 4 0.001 5 826.50

803.77 0.05 0.063 0.003 803.78

812.40 0.06 0.022 5 0.000 3 842.11

816.54 0.08 0.001 59 0.000 18

823.20 0.07 0.008 7 0.000 9 823.20

825.95 0.07 0.057 0.003 826.50

833.9 0.1 0.001 41 0.000 15

837.50 0.10 0.010 2 0.001 8 867.38

842.2 0.1 0.005 7 0.000 9 842.11

846.9 0.1 0.057 0.003 926.45

859.1 0.2 0.000 15 0.000 00 858.05

863.6 0.1 0.003 9 0.000 3 943.2

867.4 0.1 0.001 80 0.000 21 867.38

876.50 0.07 0.042 0.003 926.45

893.1 0.2 0.002 7 0.000 6 943.2

896.7 0.2 0.017 1 0.002 4 926.45

907.6 0.2 0.014 7 0.000 9 907.6

911.3 0.2 0.000 81 0.000 18 972.1

913.6 0.3 0.000 45 0.000 06

926.5 0.3 0.001 65 0.000 12 926.45

941.2 0.3 0.003 3 0.000 3 972.1

949.3 0.3 0.000 36 0.000 06

958.0 0.7 0.000 60 0.000 15 1,019.3

969.2 0.4 0.000 24 0.000 12 999.7

975.2 0.5 0.000 18 0.000 03

978.7 0.4 0.000 81 0.000 09

989.4 0.5 0.000 15 0.000 09 1,019.3

994.3 0.3 0.000 12 1,024.4

999.3 0.5 0.000 21 0.000 12 999.7

1,025.1 0.5 0.000 15 1,024.4

Table of Contents

Page -11-

11.435 dayRa

22388

Th22790

0.001200.00170

0.00410

0.00062

0.00028

0.0001500.00023

0.00031

1.27

20.4 (0.77 ns)

4.89 (0.42 ns)

1.500.0572 (0.20 ns)2.06 (<0.03 ns)

0.176

24.2

2.90

0.002 (0.63 ns)23.5 ( 0.6 ns)�3.00 (0.24 ns)

0.174 (>0.3 ns)

2.42 (0.20 ns)

878.82884.2

891904.4

908.05

926.32

942.9

971.33999.831015.21020.11024.9

174.58

234.802

286.103

329.859

350.47369.39

376.278

460.10

0.0

29.858

50.13361.43179.722

130.172

3/2+

(5/2)+

3/2-(7/2)+(5/2)-

(9/2)+

(9/2)-

(5/2)+

1/2+

3/2-

(1/2)-(5/2)-(7/2)-

(11/2+)

(9/2)-

644.2

704.3

748.5

818

848.7

854.3

891

535.0

448.0

621.4

828.5

857.3

878.2

90

8.2

575.7

596

692.0

846.7

876.2

896.1

927

863

893

641.0

910

941.6

971.7

623.8

920.0

938.0

970.0

999.8

1015.2

958.7

990.0

10209

95

1025

(1/2+) 0.0

18.72 day

100% decay�

Q =6146.49�

Based on 8/5/1999 NNDC/BNL Data

227Th (18.72 day) Decay SchemePart 1 of 6

Table of Contents

Page -12-

11.435 dayRa

22388

Th22790

0.03/2+

(1/2+) 0.0

18.72 day

100% decay�Q =6146.49�

2.90

24.2

0.002 (0.63 ns)23.5 ( 0.6 ns)�3.00 (0.24 ns)

0.775 (0.45 ns)

2.42 (0.20 ns)

1.27

0.228 (0.075 ns)20.4 (0.77 ns)

4.89 (0.42 ns)8.3 (0.28 ns)3.63 (<0.050 ns)

2.06 (<0.03 ns)

0.00320

0.0098

0.00700.00380

79

2.6

56

9.0

72

3.6

75

4.0

80

3.5

75

6.9

78

7.4

81

8

48

0

49

3.1

53

7.0

58

9.0

64

8.5

77

3.0

79

2.6

823.1

74

6.4

76

6.3

77

5.3

82

6

50

7.4

55

6.5

60

7.5

71

8.5

76

2.2

78

0.5

812.2

84

2.2

48

2

51

6.4

52

4.3

57

8.5

73

5.5

79

6.8

80

7.5

82

8.5

85

8.38

37

.3

86

7.5

792.6803.61818.18823.05825.78

842.07858.50

867.2

342.84

376.278

(<0.10 ns)

29.858

50.13361.43179.722

123.790

174.58

234.802

280.20286.103

329.859334.386342.622

(5/2)+

3/2-(7/2)+(5/2)-

(7/2)-

(9/2)-

(5/2)+

(7/2)+1/2+

3/2-5/2+3/2+(9/2)+

(7/2)-

Based on 8/5/1999 NNDC/BNL Data

227Th (18.72 day) Decay SchemePart 2 of 6

Table of Contents

Page -13-

Th22790

(1/2+) 0.0

18.72 day

100% decay�

11.432 dayRa

22388

0.03/2+

Q =6146.49�

2.90

0.174 (>0.3 ns)

1.270.311

0.0179

0.1700.176

0.0210.0166

0.00270

0.0002

0.0026

29.858

50.13361.43179.722

123.790130.172

174.58174.62

234.802247.39

280.20

329.859334.386342.622342.84

376.278

404.78

442.42445.00460.10

514.47536.9

590.3

712.8

784.1786.93

(5/2)+

3/2-(7/2)+(5/2)-

(7/2)-(9/2)+

(9/2)-(11/2)+

(5/2)+(11/2)-

(7/2)+

3/2-5/2+3/2+(9/2)+

(7/2)-

(7/2)-

(7/2+)(9/2)+(9/2)-

(11/2-)

0.002 (0.63 ns)23.5 ( 0.6 ns)�3.00 (0.24 ns)

0.775 (0.45 ns)

2.42 (0.20 ns)

0.228 (0.075 ns)

4.89 (0.42 ns)8.3 (0.28 ns)3.63 (<0.050 ns)

2.06 (<0.03 ns)

(<0.10 ns)

99.6

162.1

268.0

0

318.4

6

20.9

5

40.2

68.7

2

110.6

5

197.6

1

270.7

314.7

8

383.5

2

415.1

3

117.2

0

117.5

212.7

225.5

285.5

0

399.0

54.2

267.1

339.8

289.5

466.5

632.3

663.1

722.1

734.4

754.0

784.2

452.7

457.5

552.4

707.2

738.4

756.9

787.4

424.05 0.0070(11/2+)

24.2

Based on 8/5/1999 NNDC/BNL Data

227Th (18.72 day) Decay SchemePart 3 of 6

Table of Contents

Page -14-

Th22790

(1/2+) 0.0

18.72 day

100% decay�

11.435 dayRa

22388

0.0

Q =6146.49�

2.90

0.174 (>0.3 ns)

1.27

29.858

50.13361.43179.722

123.790

130.172

234.802

0.002 (0.63 ns)23.5 ( 0.6 ns)�3.00 (0.24 ns)

0.775 (0.45 ns)

24.23/2+

(5/2)+

3/2-(7/2)+(5/2)-

(7/2)-

(9/2)+

174.58 2.42 (0.20 ns)(9/2)-174.62(11/2)+

(5/2)+

280.20 0.228 (0.075 ns)(7/2)+

329.859 4.89 (0.42 ns)3/2-334.386 8.3 (0.28 ns)5/2+

342.622 3.63 (<0.050 ns)3/2+342.84 (<0.10 ns)(9/2)+

376.278 2.06 (<0.03 ns)(7/2)-

0.0179404.78(7/2)-

424.05 0.0070(11/2+)

0.0342(13/2-) 315.55

13

4.4

8

289.5

319.2

0

36

9.3

5

33

.40

42

.16

46

.45

96

.10

141.4

201.6

0

24

6.1

9

252.6

296.5

1

314.7

8

32

6.1

1

346.4

5

37

6.3

62

.0

12

4.8

17

0.0

0

23

0.3

28

1.0

32

4.9

4

37

4.7

9

10

9.6

24

9.6

36

2.5

0

56

.00

90

.0

10

2.5

308.4

0

35

2.6

1

37

0.8

5

382.4

40

2.5

432.3

3

432.30 0.216(5/2)-

0.0572 (0.20 ns)369.39(5/2)-

Based on 8/5/1999 NNDC/BNL Data

227Th (18.72 day) Decay SchemePart 4 of 6

Table of Contents

Page -15-

20.4 (0.77 ns)1/2+ 286.103

Th22790

(1/2+) 0.0

18.72 day

100% decay�

11.435 dayRa

22388

0.0

Q =6146.49�

2.90

0.174 (>0.3 ns)

1.27

1.50

29.858

50.13361.43179.722

123.790

130.172

234.802

350.47

0.002 (0.63 ns)23.5 ( 0.6 ns)�3.00 (0.24 ns)

0.775 (0.45 ns)

24.23/2+

(5/2)+

3/2-(7/2)+(5/2)-

(7/2)-

(9/2)+

174.58 2.42 (0.20 ns)(9/2)-

(5/2)+

280.20 0.228 (0.075 ns)(7/2)+

329.859 4.89 (0.42 ns)3/2-334.386 8.3 (0.28 ns)5/2+

342.622 3.63 (<0.050 ns)3/2+342.84 (<0.10 ns)(9/2)+

0.0342(13/2-) 315.55

235.9

71

256.2

5

286.1

22

141.4

9

43.8

0

94.9

0

206.1

1

250.3

5

279.7

2

300.0

0

329.8

51

48.3

054.2

0

99.6

204.2

7

210.6

5

254.6

8

272.9

3

284.4

0

304.5

19

334.3

81

56.5

5

107.7

5

262.9

1

281.2

9

292.4

1

312.6

9

342.5

0

62.4

5

107.7

5

168.2

9

212.6

5

219.0

0

281.2

9

8.2

64.3

1300.0

0

350.4

3

Based on 8/5/1999 NNDC/BNL Data

(1/2)-

227Th (18.72 day) Decay SchemePart 5 of 6

Table of Contents

Page -16-

Th22790

(1/2+) 0.0

18.72 day

100% decay�

11.435 day

0.0

Q =6146.49�

2.90

0.174 (>0.3 ns)

1.27

29.858

50.13361.43179.722

123.790

130.172

234.802

0.002 (0.63 ns)23.5 ( 0.6 ns)�3.00 (0.24 ns)

0.775 (0.45 ns)

24.23/2+

(5/2)+

3/2-(7/2)+(5/2)-

(7/2)-

(9/2)+

174.58 2.42 (0.20 ns)(9/2)-

(5/2)+

280.20 0.228 (0.075 ns)(7/2)+

29.8

620.3

0

50.1

3

31.5

8

61.4

41

29.6

0

49.8

9

79.7

2

43.8

0

75.1

5

44.1

0

62.4

5

73.6

2

93.9

3

6.3

68.7

2

100.2

7

44.4

0

50.8

4

69.8

94.9

0

113.1

59

44.4

0

113.1

59

173.4

1

184.6

5

205.0

3

234.8

1

72.9

0

117.2

0

123.5

2

105.2

150.1

6

175.8

200.5

219.0

0

250.3

5

104.60

(11/2)+ 174.62 (0.14 ns)

(11/2)- 247.39 0.311 (0.15 ns)

Based on 8/5/1999 NNDC/BNL Data

Ra22388

227Th (18.72 day) Decay SchemePart 6 of 6

Table of Contents

Page -17-

GAMMA-RAY ENERGIES AND INTENSITIES (page 1 of 4)

Nuclide: 227Th E , E , I , I , Levels- from ENSDF Database as of August 5, 1999 Half Life: 18.72(2) day

E (keV) E I I Level E (keV) E I I Level

These I are per 100 Decays of 227

Th. For 227

Ac parent, multiply these values by 0.9862

For total uncertainty add systematic component of 10.6% in quadrature, based on the normalization factor 0.123(13)

6.3 0.3 130.172

8.2 0.1 350.47

20.30 0.05 0.18 0.06 50.133

20.95 0.05 445.00

29.60 0.03 0.005 79.722

29.86 0.01 0.095 0.030 29.858

31.58 0.01 0.076 0.018 61.431

33.40 0.08 0.01 376.278

40.2 0.1 0.02 445.00

42.16 0.20 0.039 0.015 376.278

43.80 0.19 0.05 0.01 104.60

43.80 0.05 0.218 0.028 329.859

44.10 0.05 0.007 0.002 123.790

44.40 0.05 0.004 0.004 174.58

44.40 0.05 0.012 0.009 174.62

46.45 0.05 376.278

48.30 0.03 0.009 5 0.001 0 334.386

48.5 0.5 0.048 0.012

49.89 0.07 0.57 0.18 79.722

50.13 0.01 8.0 0.4 50.133

50.84 0.05 174.58

54.20 0.04 334.386

54.2 1.0 514.47

56.00 0.06 0.009 5 0.001 8 432.30

56.55 0.03 0.10 0.05 342.622

59.6 0.5 0.010 0.004

61.441 0.020 0.085 0.018 61.431

62.0 0.5 404.78

62.45 0.05 0.191 0.028 123.790

62.45 0.05 0.191 0.028 342.84

64.31 0.10 0.04 0.01 350.47

66.2 0.5 0.006 0.004

66.4 0.5 0.007 0.004

68.72 0.09 0.054 0.011 130.172

68.72 0.09 0.054 0.011 445.00

69.8 0.5 0.010 0.004 174.58

72.90 0.10 0.027 0.006 247.39

73.62 0.05 0.018 9 0.002 8 123.790

75.15 0.25 0.022 0.006 104.60

79.72 0.01 1.89 0.18 79.722

90.0 0.3 432.30

93.93 0.08 1.37 0.11 123.790

94.90 0.05 174.58

94.90 0.05

0.011 3 0.001 8

329.859

96.10 0.14 0.066 0.018 376.278

99.6 0.1 334.386

99.6 0.2 442.42

100.27 0.03 0.076 0.015 130.172

102.5 0.1 432.30

105.2 0.4 280.20

107.75 0.07 342.622

107.75 0.07 0.008 5 0.002 8

342.84

109.6 0.5 0.006 424.05

110.65 0.05 445.00

112.6 0.5 0.009

113.159 0.020 0.15 174.62

113.159 0.020 0.52 174.58

117.20 0.05 460.10

117.20 0.05 0.170 0.018 247.39

117.5 0.5 0.012 0.002 460.10

123.52 0.18 0.010 0.005 247.39

124.8 0.3 0.002 404.78

134.48 0.15 0.028 0.006 369.39

141.49 0.05 315.55

141.49 0.05 0.12 0.07

376.278

150.16 0.17 0.014 0.011 280.20

162.1 0.3 0.009 442.42

168.29 0.13 0.014 3 0.002 8 342.84

Table of Contents

Page -18-

GAMMA-RAY ENERGIES AND INTENSITIES (page 2 of 4)

Nuclide: 227Th E , E , I , I , Levels- from ENSDF Database as of August 5, 1999 Half Life: 18.72(2) day

E (keV) E I I Level E (keV) E I I Level

These I are per 100 Decays of 227

Th. For 227

Ac parent, multiply these values by 0.9862

For total uncertainty add systematic component of 10.6% in quadrature, based on the normalization factor 0.123(13)

170.00 0.10 0.004 404.78

173.41 0.09 0.015 0.004 234.802

175.8 0.3 0.020 0.025 280.20

184.65 0.05 0.038 0.006 234.802

197.61 0.10 0.014 0.004 445.00

200.5 0.2 280.20

201.60 0.09 0.031 0.007 376.278

202.5 0.5 0.006 0.002

204.27 0.17 0.20 0.05 334.386

205.03 0.09 0.15 0.04 234.802

206.11 0.05 0.21 0.06 329.859

210.65 0.05 1.11 0.21 334.386

212.65 0.04 0.06 0.04 342.84

212.7 0.3 0.018 0.006 460.10

219.00 0.13 0.103 0.010 280.20

219.00 0.13 0.103 0.010 342.84

225.5 1.0 0.004 460.10

230.3 0.3 404.78

234.81 0.09 0.41 0.15 234.802

235.971 0.020 12.3 0.9 286.103

246.19 0.20 0.010 0.004 376.278

249.6 0.5 0.007 424.05

250.35 0.05 0.09 0.02 280.20

250.35 0.05 0.34 0.05 329.859

252.6 0.3 0.096 0.028 376.278

254.68 0.09 0.7 0.5 334.386

256.25 0.02 7.0 0.4 286.103

262.91 0.09 0.095 0.010 342.622

267.1 0.2 514.47

268.00 0.19 0.005 7 0.001 8 442.42

270.7 0.5 0.04 0.01 445.00

272.93 0.09 0.48 0.07 334.386

279.72 0.09 0.06 0.04 329.859

281.0 0.2 404.78

281.29 0.14 342.622

281.29 0.14

0.16 0.04

342.84

284.40 0.20 0.02 0.01 334.386

285.50 0.09 0.048 0.010 460.10

286.122 0.020 1.54 0.12 286.103

289.5 0.3 369.39

289.5 0.3 536.9

292.41 0.09 0.066 0.018 342.622

296.51 0.05 0.46 0.06 376.278

300.00 0.03 0.34 0.05 350.47

300.00 0.03 2.32 0.17 329.859

304.519 0.020 1.2 0.4 334.386

308.40 0.09 0.014 0.004 432.30

312.69 0.09 0.48 0.07 342.622

314.78 0.09 376.278

314.78 0.09 0.44 0.06

445.00

318.46 0.19 0.006 0.002 442.42

319.20 0.14 0.032 0.004 369.39

324.94 0.19 0.005 404.78

326.11 0.10 0.02 376.278

329.851 0.020 2.69 0.27 329.859

334.381 0.020 1.05 0.10 334.386

339.8 1.0 514.47

342.50 0.09 0.39 0.09 342.622

346.45 0.10 0.010 0.004 376.278

348.5 0.5 0.006 0.002

350.43 0.09 0.113 0.018 350.47

352.61 0.09 0.012 0.004 432.30

362.50 0.14 0.004 7 0.001 0 424.05

369.35 0.05 0.006 369.39

370.85 0.05 432.30

374.79 0.20 0.001 4 0.000 5 404.78

376.3 0.1 376.278

382.4 0.4 0.006 432.30

Table of Contents

Page -19-

GAMMA-RAY ENERGIES AND INTENSITIES (page 3 of 4)

Nuclide: 227Th E , E , I , I , Levels- from ENSDF Database as of August 5, 1999 Half Life: 18.72(2) day

E (keV) E I I Level E (keV) E I I Level

These I are per 100 Decays of 227

Th. For 227

Ac parent, multiply these values by 0.9862

For total uncertainty add systematic component of 10.6% in quadrature, based on the normalization factor 0.123(13)

383.52 0.09 0.047 0.010 445.00

392.4 0.5 0.010 0.002

399.0 0.4 0.002 460.10

402.5 0.1 432.30

415.13 0.17 0.001 6 0.000 4 445.00

432.33 0.09 0.004 7 0.001 0 432.30

448.0 0.6 0.000 15 0.000 07 908.05

452.7 0.6 0.000 10 786.93

457.5 1.0 0.000 06 786.93

466.5 1.0 0.000 047 0.000 023 590.3

480 1 0.000 28 0.000 10 823.05

482 1 0.000 14 0.000 04 858.50

493.1 0.2 0.000 52 0.000 07 823.05

507.4 0.3 0.000 38 0.000 07 842.07

516.4 0.3 0.000 17 0.000 04 858.50

524.3 0.4 0.000 141 0.000 028 858.50

535.0 1.2 0.000 095 0.000 028 904.4

537.0 0.3 0.001 05 0.000 18 823.05

552.4 0.5 0.000 28 0.000 06 786.93

556.5 0.5 0.000 21 0.000 04 842.07

569.0 0.3 0.000 57 0.000 10 803.61

575.7 0.7 0.000 123 0.000 028 926.32

578.5 0.7 0.000 123 0.000 028 858.50

589.0 0.6 0.000 057 0.000 018 823.05

596 1 0.000 010 0.000 005 926.32

607.5 0.4 0.000 17 0.000 04 842.07

621.4 0.5 0.000 057 0.000 018 908.05

623.8 0.5 0.000 15 0.000 04 999.83

632.3 0.7 0.000 14 0.000 04 712.8

641.0 0.5 0.000 018 0.000 006 971.33

644.2 0.5 0.000 047 0.000 018 878.82

648.5 0.5 0.000 018 0.000 006 823.05

663.1 0.5 0.000 057 0.000 018 712.8

692.0 0.7 0.000 038 0.000 010 926.32

704.3 0.5 0.000 076 0.000 018 878.82

707.2 0.7 0.000 038 0.000 010 786.93

718.5 1.0 0.000 028 0.000 010 842.07

722.1 0.6 0.000 36 0.000 11 784.1

723.6 0.6 0.000 26 0.000 10 803.61

734.4 0.5 0.000 10 0.000 04 784.1

735.5 0.5 0.000 15 0.000 05 858.50

738.4 1.0 0.000 066 0.000 018 786.93

746.4 0.7 0.000 10 0.000 04 825.78

748.5 0.5 0.000 28 0.000 06 878.82

754.0 0.6 0.000 095 0.000 028 784.1

754.0 0.6 0.000 095 0.000 028 803.61

756.9 0.2 0.000 18 0.000 05 818.18

756.9 0.2 0.000 7 786.93

762.2 0.5 0.000 25 0.000 05 842.07

766.3 0.5 0.000 28 0.000 06 825.78

773.0 0.8 0.000 12 0.000 05 823.05

775.3 0.2 0.001 41 0.000 18 825.78

780.5 0.3 0.000 31 0.000 06 842.07

784.2 0.5 0.000 095 0.000 028 784.1

787.4 0.5 0.000 095 0.000 018 786.93

787.4 0.5 0.000 095 0.000 018 818.18

792.6 0.6 0.000 066 0.000 010 792.6

792.6 0.6 0.000 066 0.000 010 823.05

796.8 0.2 0.000 76 0.000 10 858.50

803.5 0.2 0.000 92 0.000 10 803.61

807.5 1.0 0.000 047 0.000 023 858.50

812.2 0.2 0.002 56 0.000 28 842.07

818 1 0.000 123 0.000 028 818.18

818 1 0.000 123 0.000 028 878.82

823.1 0.2 0.002 36 0.000 28 823.05

826 1 0.000 18 0.000 06 825.78

828.5 0.5 0.000 18 0.000 05 858.50

828.5 0.5 0.000 18 0.000 05 908.05

Table of Contents

Page -20-

GAMMA-RAY ENERGIES AND INTENSITIES (page 4 of 4)

Nuclide: 227Th E , E , I , I , Levels- from ENSDF Database as of August 5, 1999 Half Life: 18.72(2) day

E (keV) E I I Level E (keV) E I I Level

These I are per 100 Decays of 227

Th. For 227

Ac parent, multiply these values by 0.9862

For total uncertainty add systematic component of 10.6% in quadrature, based on the normalization factor 0.123(13)

837.3 0.3 0.000 38 0.000 04 867.2

842.2 0.3 0.000 57 0.000 06 842.07

846.7 0.5 0.000 141 0.000 028 926.32

848.7 0.5 0.000 057 0.000 018 878.82

854.3 0.5 0.000 066 0.000 014 884.2

857.3 0.5 0.000 057 0.000 018 908.05

858.3 0.3 0.002 2 0.000 4 858.50

863 1 0.000 018 0.000 010 942.9

867.5 0.5 0.000 066 0.000 014 867.2

876.2 0.4 0.000 15 0.000 05 926.32

878.2 0.4 0.000 11 0.000 04 908.05

891 1 0.000 018 0.000 006 891

893 1 0.000 012 0.000 004 942.9

896.1 0.5 0.000 105 0.000 028 926.32

908.2 0.2 0.001 98 0.000 28 908.05

910 1 0.000 015 0.000 006 971.33

920.0 0.5 0.000 011 0.000 028 999.83

927 1 0.000 007 0.000 018 926.32

938.0 0.8 0.000 010 0.000 004 999.83

941.6 0.3 0.000 068 0.000 011 971.33

958.7 0.3 0.000 059 0.000 011 1,020.1

970.0 0.4 0.000 028 0.000 006 999.83

971.7 1.0 0.000 009 0.000 004 971.33

990.0 0.7 0.000 033 0.000 009 1,020.1

995 1 0.000 006 0.000 004 1,024.9

999.8 0.5 0.000 028 0.000 010 999.83

1,015.2 0.7 0.000 015 0.000 004 1,015.2

1,020 1 0.000 018 0.000 006 1,020.1

1,025 1 0.000 015 0.000 005 1,024.9

Table of Contents

Page -21-

390.4

368.8

487.6

199.4 131.2

609.3

2245.2

598.7

2260.5

220.6

255.6

251.1

527.6

1382.8

165.5

388.0

177.1

432.1

288.1

8177.4

104.2

44

5.0

3430.5

175.8

106.7

8251.8

371.6

8362.0

6249.4

342.9

328.4

33

8.2

81

333.9

9

32

3.8

71

179.5

4

26

9.4

59

255.2

3110.8

56

158.6

33

15

4.2

1144.2

32

31.9

9

122.3

19

14.4

10

4.4

0.0

0.0

4.46

14.38

126.77

158.64

269.48

338.27

376.27

342.8

378.5

446.83

515.1

541.99

593.9598.71

623.7

646.3

711.6

733.2

445.03

Ra22388

Rn21986

3.96 sec.

11.435 day

100% decayQ =5979.2

5/2+

5/2+,7/2+

(3/2,5/2)+

(5/2,7/2)+

(3/2,5/2)+

3/2+,5/2+

(3/2)+(-)

+

(3/2,5/2)+(3/2)-

(6.2 ps)

1.00 (6.9 ps)

9.2 (6.1 ps)

25.7 (14.2 ps)

52.6 (42.3 ps)

9.2 (402 ps)

0.32 (875 ps)

(15.4 ns)

Based on 8/5/1999 NNDC/BNL Data

0.021

0.026

0.042

0.043

0.0950.15

0.13

0.13

2.27

1.0

3/2+

223Ra (11 day) Decay Scheme

Table of Contents

Page -22-

GAMMA-RAY ENERGIES AND INTENSITIES

Nuclide: 223Ra E , E , I , I , Levels- from ENSDF Database as of August 5, 1999 Half Life: 11.435(4) day

E (keV) E I I Level E (keV) E I I Level

4.4 1.0 4.46

10 1 0.014 0.001 14.38

14.4 1.0 0.016 0.001 14.38

31.99 0.03 0.000 10 158.64

33.6 0.5 0.10 0.03

63.2 0.5 0.055 0.015

104.2 0.1 0.019 0.003 446.83

106.78 0.03 0.023 0.001 445.03

110.856 0.010 0.058 0.004 269.48

114.5 0.5 0.009 0.005

122.319 0.010 1.19 0.01 126.77

131.2 0.5 0.005 0.003 646.3

136.1 0.2 0.027 0.003

143.1 0.8

144.232 0.010 3.22 0.07 158.64

154.21 0.01 5.6 0.1 158.64

158.633 0.010 0.69 0.01 158.64

165.5 0.5 0.005 0.003 541.99

175.8 0.2 0.019 0.004 445.03

177.1 0.5 0.004 0.003 515.1

177.4 0.2 0.047 0.004 446.83

179.54 0.05 0.15 0.01 338.27

193.0 1.0 0.010

199.4 0.5 0.003 0.001 646.3

219.0 0.8 0.014 0.005

220.6 0.3 0.036 0.005 598.71

236.0 0.6 0.010

245.2 0.3 0.010 0.003 623.70

249.4 0.3 0.038 0.010 376.27

251.1 0.3 0.04 0.01 593.9

251.8 0.1 0.067 0.008 378.5

255.23 0.15 0.052 0.007 269.48

255.6 0.5 0.005 0.003 593.9

260.5 0.5 0.007 0.003 598.71

269.459 0.010 13.7 0.3 269.48

288.18 0.03 0.158 0.004 446.83

293.8 0.2 0.066

323.871 0.010 3.93 0.07 338.27

328.40 0.03 0.206 0.007 342.80

333.99 0.05 0.100 0.005 338.27

338.281 0.010 2.79 0.05 338.27

342.90 0.04 0.22 0.01 342.80

346.8 0.3 0.18

362.06 0.02 0.045 0.003 376.27

368.8 0.2 0.008 0.004 711.6

369.5 0.021

371.68 0.02 0.48 0.01 376.27

373.3 0.049

376.0 0.3 0.012 1 0.004 0

382.8 0.3 0.014 0.004 541.99

388.0 0.5 0.015 0.005 515.1

390.4 0.5 0.007 0.003 733.2

393.5 0.5 0.011 1 0.004 0

430.5 0.5 0.019 0.005 445.03

432.1 0.1 0.034 0.003 446.83

439.3 0.081 0.014

445.03 0.01 1.27 0.04 445.03

465.2 0.1 0.004 0 0.001 0

481.6 0.5 0.021 0.005

487.6 0.3 0.011 0.001 646.3

527.61 0.01 0.070 0.004 541.99

580.4

598.72 0.02 0.093 0.004 598.71

609.32 0.04 0.056 0.003 623.70

623.4 0.008 0.004

632.0 1.0 0.030 0.010

711.2 0.7 0.003 6 0.001 0

These I are per 100 Decays of 223

Ra.

For total uncertainty add systematic component of 1.45% in quadrature, based on the normalization factor 0.137(2)

Table of Contents

Page -23-

0.0

Rn21986

Po21584

1.781 msec.

3.96 sec.5/2+

9/2+

7/2+

5/2+

12.9 (195 ps)

0.054 (66 ps)

1055

538.2

324.9

889

370.9

833

563.7

43

8.2

67

6.6

4

608.3

337.7

51

7.6

3

22

1.5

40

1.8

11

30

.59

29

3.2

3

27

1.2

3

100% decay�Q =6946.1�

Based on 8/5/1999 NNDC/BNL Data

1056

888.7

834.4

731.6

676.64

608.6

517.55

401.81

293.6

271.23

0.0

�0.001

0.0037

0.0044

0.003

0.0174

0.0026

7.5 (66ps)

0.12

79.4

Q =7526.4�

9/2+

9/2+

99.99977% decay�

1.781 msec.

0.0

0.0

Po21584

Pb21182

36.1 min.

Based on 4/26/2000 NNDC/BNL Data

99.99977

438.8

438.8

�0.034

219Rn (3.96 sec.) Decay Scheme

215Po (1.781 msec.) Decay Scheme

GAMMA-RAY ENERGIES AND INTENSITIES

Nuclide: 219Rn Half Life: 3.96(1) sec.

Eγ (keV) σ Eγ ����

Iγ ����σIγ Level

130.59 0.03 0.12 0.01 401.81 α 221.5 0.3 0.030 0.004 517.55 α 271.23 0.01 10.8 0.3 271.23 α 293.54 0.04 0.073 0.004 293.60 α 324.9 1.0 0.006 < 1,056 α 337.7 1.0 0.009 0.002 608.6 α 370.9 1.5 0.01 < 888.7 α 380 0.000 03 ≈ α 401.81 0.01 6.4 0.2 401.81 α 438.2 0.6 0.030 < 731.6 α 517.63 0.06 0.044 0.002 517.55 α 538.2 1.5 0.006 0.003 1,056 α 563.7 1.5 0.003 2 < 834.4 α 608.3 1.0 0.004 0.002 608.6 α 676.64 0.07 0.021 0.002 676.64 α 833 ≈ 0.001 ≈ 834.4 α 889.0 1.5 0.001 6 0.000 8 888.7 α 1,055 2 0.000 6 0.000 3 1,056 α

Eγ, σEγ, Iγ, σIγ, Levels from ENSDF Database as of August 5, 1999

� These Iγ are per 100 Decays of 219

Rn.

� For total uncertainty add 5.5% systematic component in quadrature,

based on the normalization factor 0.108 (6).

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