UNCLASSIFIED

AD 426005

DEFENSE DOCUMENTATION CENTERFOR

SCIENTIFIC AND TECHNICAL iNFORMATION

CAMERON STATION. ALEXANDRIA. VIRGINiA

UNCLASSIFIED

NOTICE: Mhen governent or other dravings, speci-fications or other data are used for any purpose

other than in connection vith a defi itel4 related

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Government thereby incurs no responsibility, nor any

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wise as in any manner licensing the holder or anyother person or corporation, or conveying any rightsor permission to mv.fact-tre, use or sell anypatented invention that my in any way be relatedthereto.

SCOP -NO.

TECHNICAL MEMORANDUM 1091

4 - EVALUATION OF DOPED PERCHL)RAi

Vf "'EXPERIMENTAL PHOTFLASH COMPOSITIONS

-S:DAVID J. EDELVIANjiAlt ., ." ,OUR M. KAYE4R

OCTOBER 19E3

P I C I rV N A R: 'EN A L, ,:: F? N' t-". ,, 1 ,F- Y E Y

GO

I L ;\U rVW

The findings In 0iis rpvrt are uot ht (.o), :Irued .tan official. lepartmen ot thu Army Position

91 S|POSITlON

Destroy this rept) a when it is 31o lorttcr v, Jed.)o not return.

I)DC AVAIL .ViiITY NOTICE

Qu.alified reque-t .rs way obt.du copies . *. reportfrom I)DC.

OLCO\e G°9

EVALUATION OF DOPED PERCHLORATES IN

EXPERIMENTAL PHOTOFLASH COMPOSITIONS

by

David i. Edelm

Seyimou A. Koy

Feltm.n Research LaboratoriesPicatinny Arsenal

Dover, K. J.

Technical Memo M. 1091 A9proved:

AMcMS Co&. 53ll.558 S. SAGEChief, Pyrotechnics

Do- of the Amy Project 5504-01-027 Laboratory

TABLE OF CONTENTS

Page

Object 1

Summary!

latrodcuon 2

Results 3

Discussion of Resalts 3

Conclusios 8

Recommendaions 9

Experimental Procedures 10

Preaoa of Materia1s I0

Blending and Loading Procedures 10

Testing 10

Materials 10

References II

Distibution List 18

Table

I Lumiaositr Characteristics cf Experimental Photo- 12flash Systems

2 Lum iosity Characteristics of Epeimental Photo- 13flash Systems

3 Luminosity Characteristics of Experimental Photo- 14Iash Systems

4 Comparison of Average Efficiency of Doped Perchlorate 15Systems at Sea Level and 80,000 Feet Simulated Attrude

Tp.,.

5 Impwx md Fractios Sensiiiy Data 16

Figure

I Rveme tiueimeasity curves at sea level mad 17simul4e high &adse

ACKNOWLIDMEgIT

The audm wish to ackowuledgte the nilmble assistrc Pt ofrs. Grace Canrzza, *iss Dais iMiddebro"s

sod [A. GxeoVrge S for their pact in preporiag thesamples.

OBJECT

To evaluate the effects upon Immiaosiy produced by introdedag theimputies Ag, Cu ' , and r- ioes into the crysal lattice of potassiumperhlonate when this compound is incopporated into a high eaeqgy Ezellozidaet flash system

SUMMAiRY

The effects of as oxidant conaining added impuriies sech as Ae,

Cu-, and I- ions spa the lemimosity of flash systems were tested is tL.following blesis:

1. FP600 (60/40 potassium petchlorate/almmkm) photoflash con-posiom for sea level applications

2. FP790 (3012 01 casm/alu mm lportssiu per-diorate)phooflas racoosuioa for Lig altitde appl ios

3. FP856 (31/20149 almilcalcimm fleoide!poassim peicklo-rate) hi" akitde fl

11 tests were perfmed at sea level-or at 2D0.9 e Hg, simulating

80,000 feet skivee,* ad at the zemp e -p- ailiag at the PyrotechnicLaboror High Altitude Tak-

The system 40160 almimpossim erdlate doped with Ae.

Cu+- - , cc I- ions exhibited so imtease im lmiaow-s efficiency over anon-doped control at ambient conditios At 80,000 ieet, increasd effiiencieswe e achieved l'a the doped systems, bet the results could mot be veri--ied ins a seco se-ies of tts.

Within the sysems 30120150 calcism/almaisum/potassim perchkrateand 31/20/49 alumiamf/calcim floridle/potassium per-chlmre, ihe con-posiMos costainiag potassium perchlornie doped ith Ag ions showedthe gmatest iacreases in luminous efficiencies, ranging uP to 27.0% and29.4 respectively at 80,000 ft. However, neither system gave verfiable

results oa reest whee the met]. of iopialg was stepped up firom hbora-

to[r to pilot plan scale.

The above systems doped with Cu" ad I- ices gave results that wereither not ve-fiable or else exhibited lower efficiency valees. In the caseof the Cu.+ ion, which 1was introduced as eke perclorate, there w s an

undesirable reactioa between its water of hratiee and calcium.

y& CLhs o tUe MMS '"_ a* H aM- 'WA kec a- used imw uiAU aldmdes we li me SCtaL

locressa the coeceatrarion, of At.' ioes from 1 to 2 noie perceac dset inprove- te lanimous efficiescies of the system~ is which they wr

MTRODUCTION

116e progrm oudimed is this repot w-as saggested by the results o.-taied by Faveman at al Rts& 1, 2, and 3) wothiag with irradiatef adA ae-irradiated samples of &inia perchioraft a&A samples of deped ad u-

doped potassism pereblorae is cowbimation, with cerai feels (Ref 4). Itwas fooad that soeitr~lia porassium verchiorate Aecomposes at lowertemperares ishie preseace of maesism aol a!szasm if the poasusiumPerchlorate is Mot pine but Cosass smanl "sCiuies of silver curric, oriodid i. in stodies of a Mlead of 20180 me~saloasmperchl&-rae the igaitioo sempecowe was zedoced from 60%" to WOC *be& thepotassium paicklegate was dopel %"~ one aoe ;-rcerA s-ilVer pechIorase.

The tim to ivitim for the sime doped Composigios, was aFnrurimat*lWal of shtobtaiwil with the mondoped or vire systea (Rdf 5-I. to4060

Ahmiiln sim pethlorae, decomposie!in at the potasson perchs.

rate (as detemimed by both TGA sad DTA techaiques) bega2 at 5SO*C.Ihe. doped wick see ae percest, sibrer Perckorate. bhe P.:assion Per-chlorat started to decompose at WOC. but did act ignie Is both cases,it was postulaed that doe sime ion priI&.S Cue-ie fr geactis. It wasalso fooad tbos, is the presenc of cupigic sod Wodie isms. the 4ecoeposi-

nsoa of both ammso amd porassion pechocareC is Ceaiderably eahasced-This fin-n was atrikcdc th de low ekoctron affinity21 Psad pelr&EiiYof th~e iodide ise and so the abiity of the cupri ion rc t as sclecvrobridgne ia a. electra. sester acchanism of deCo.,ositift. Is view of theprooa chas s r the observed ignto zeigperatures due to the aboveimpuities, it was coasidered desirable to, decetnise whether mhe pedomn-

'ace characteristics of flas comPoikios cosainXa potassium perch!.-rate may be altered by dopiog the potassium petChlorate with these Cazoiand saico~c impurities.

The porpose of the prec t nvescigation, was to deternice whether thereis a relationship bemweea the rea-civity of -!Oped systems a~d the bmiacs-icy results obtaised at both sea level and simuLited high altitudes.

2

RESULTS

Tables I though 3 (pp 12 ckrough 14) coneim al1 the pwamercrs imeas-wced to decemiae the a~erage Iwimcms dfirieacis, -;- cacL~csecoc;Es perxxum, of the photoflash system mser. [a each wrl the upper fij~res wceav ccAge values a=I &e lower I ixuces are &~e rue of values.

Table I (Nes. "k4) p 12, liscs the CIE results for the 0160 aluminepotassium perchimse syseew. A! l~ petrhlortes used in these tests

weePrepared on a laboratoy scale is emsi-poemiSS Ids ra est (wed iur-Mag June 1%60.

Table 2 (p 13) Mass the CIE values for coark~my teats mici the43160 al ~mptassium peracae systew commamag laboraty pre-pard doed percluroes (%s. 5-S). This sable also shows uadiuavalues eka-Ime 6w FP 790 2&d FP 3% sysceos camukiing calium aadcalcium, fluriie Mse. 94-1) These items were sested is Ihich 196L

Table 3 (!fos. 6-2)) lists the CIE vwlzmrs obtaimed for the FP' Ml mAFP M5 systems . and their degied vais.. This aake offers firom Table 2is chat the doped pmerboaces were prepared in rwve-,.ud lax s a piLwpln scale. Theme items on &--' in Seqeebr 196L

Table 4 (p 15) r - es the areerqe eiciescies of all the systemstested, Showing the peucatage lacret e S.1 efach system is taint freeambisato .* S00ver ml tiiag die pecrestags incerease relative to thecomuel system atboth - - je-or aml 80.000 fet-

Table 5 (P My, lis dhe tricties peoIdlum, a"d impact sestcWit reszlcsfuc the sy tMs 2aet inesetiam s

VqVe I (o 17) depicts t"-Cal average time vs Ismiuos istessity cuezesderived at both sea leve's aid 30.030 fee simula ed altiudfe for the sys-tems evaluated-

DISCUSSION OF RESULTS

For patposes of discassie., only the avemage efficiescies sed be re-ferredto. Henace. Table 4 will -be reviewed in detail.

The1emrno~v esuts gives i Table 4 for the 4-W60 alusisimfpcassium;Perchltatze copposiziou (Nes. 1-41 wer.e abtainea with d~pcJ perchierates

clue Were pawe! *a a hicracacy szk as:- cEcefm -42Jr

Tal=sf hrakfsed ajirces wk.s aaacE Cc- ei cucsw. e-r, C-500f. asd 4.wO si!'mwm~mE r 3"*-Peahmecract ccr-cilare. awl poansis WE5 ccs aid agami 4YM caa Oscwcslpa fc dike -mmmbgs'Id cwret The cases. eerr cctnial casi=Erowalapa wi& gte comi fraT*e I. Dss. 1-4. p1 ) I nL Aemsk ueewce r nt in efficiescyr o= tc 73,1w ~ e~etpncsekaime wit dhe caof pu Sy e k~d hpue ninthm a cls AesCidthe ad cicimacw wams adn us te VI12 mw6a eflidetacy n!ses

nit e~-This was da becas saint dam was smckr 5-rad o a --eewac iaepar tn cinwc agar the ca manOti-

-&e CIEcwe Tabie 4 fr 1)) ats. Awes &he prnage imras orcrm oaide in Ae 60140 spun.L The silerm ad c~ pft pawc-cclms (SWee. 2nmd 3) ts 25-0 am! kmnt em at- the crue

SatWM Ien The pcssia io~ie duped msmme VXe. 4) yie-cl eg42

Te). ay &e dmee pmeiames ---;e gape-Oaenc

scale Tabbe 4 Mims- S-15 readme cicicmcv iata on there seems oh-riled dowlmg Mah F) -at Motwd as& SWm fIce-

The W- 43 peunimm pm~odsi c.@.*M caaiaiqsedim dope wit Agr. C*.~ zod I-ua(es 67. 3) aiO-kc: ikea - lactate is lwmiaesiw evf a megotee zca spsecs when cmx amaim cualkims. A VO.03 feet siuredm akuie the dam! rnteags rherea. ibctatser the casaL M! 2 SpUCnT gas- Se=n.a in Ege s s ac 5kiA itlcam u cancsge swss Ee

aasea kwd caihnoi.

Wf wP 790 OIVOcicau~4rs perchrxc)cAbkedz incases urn iskvs- *we. the amid when a cxili dopewi& i ae Petm sieter prrchine was Imed re ame geficecof die canrdl (-N. 9). ras-'fl9 z-amAlenslra a sea lerd =dItt)aueecmSIa ac &AM rfet rae later r -- represamiaee of 12ZZ over sea le-veL For te FP -7% stca caamisag pa

4

the efficiencies obtained were 8,200 candleseconds/gram at sea level,and 14,700 candleseconds/gram at 80,000 feet, showing an increase of79% over sea level. This system, however, exhibited an efficiency increaseof 58% over the control at sea level and of 277 over the control at 80,000f' et. In this series of tests it was noted that the FP 790 silver perchlo-rate doped system was superior in sea level efficiency to the standard60/40 potassium perchlorate/aluminum system (8,200 and 5,200 candle-seconds/gram, respectively). This is a reversal of past observation wherethe performance of the 60/40 potassium perchlorateialuminum at sea !evelhas always been superior to that of a nondoped FP 790 system. The po-tassium iodide doped system (No. 11) showed no increase over the controlat either sea level or altitude. The use of cupric perchlorate doped po-tassium perchlorate in the FP 790 composition was dropped because ofreactivity between metallic calcium and the hydrated cupric perchlorate.

The control system FP 883 (31/20/49 aluminum/calcium fluoride/potassium perchlorate) gave efficiencies of 2,200 and 4,700 candlesec-onds/gram at sea level and high altitude, respectively (Table 4, No. 12).This represents an increase of 112% at high altitude. This system dopedwith I mole percent silver perchlorate (No. 13) gave efficiencies of ,800and 6,000 candleseconds/gram at sea level and 80,000 feet, respectively.The 1,800 candleseconds/gram figure represents a decrease in efficiencyat sea level when compared with the control, but 6,000 candleseconds/gram at 80,000 feet represents a 27% increase over the high altitude (on-tr.ol due to the presence of the dopawt, and a 232% increase over the sealevel value of 1,800 candleseconds/grm.

The two other doped oxidant systems evaluated in the FP 883 system,cupric perchlorate doped potassium perchorate (Mo. 14) and potassiumiodide doped potassium perchlorate (No. 15), proved either erratic in per-formance or were not significantly more efficient than their respectivecontrols.

To obtain additional quantities of doped perchlorates for the purpose ofsubstantiating past results and in aw.icipation of larger scale production,5-pound batches of doped potassium perchlorate were prepared on a plantscale and additional smaller batches of doped perchlorates were preparedon a laboratory scale. It was found that the different preparations variedin average particle size. For example, laboratory recrystallized potassiumperchlorate was 60 microns in average particle size. The same materialafter doping was about 82 microns. However, the second labor.tory

5

preparation yielded 94-micron recrystallized potassium perchlorate and

82-micron silver-doped potassium perchlorate. The plant-produced re-

crystallized potassium perchlorate and the corresponding doped materials

ranged from 86 to 120 microns. All preparations, consequently, were

screened and ball milled to a particle size of approximately 50 microns

to in!ure constant density during loading of the Poppy cartridges. Table 4

(p 15) lists the results obtained during September 1961 with the plant

preparations (Nos. 16-23). Two additional systems, one designed to test

the effect of doubling the silver perehlorate dopant concentration to

2 mole percent (Nos. 39 and 23) and the othet to test the effect produced

upon the system by the exposue of the silver peetblotate doped perchlo-

raze to light for eight hours (Nos. 19 al 22), awe also listed. The light

exposure should result in the redotis of silver ins to metallic silver.

Considering the system FP 7M0 (30/20/ID alaciva/saiI /polassium

perchlorate) first, it is seen "da the I olk percem silver perchlorste

doped system (No. 17) gave increase. ev th control of &% at sea

level and 3.2%* at 80,000 feet. These tesults do sot agree with the 58%

and 27% increases over the espective r eirole pvmasly obtaised with

this system (No. 10). The Ug-ep-.ae4 system doped with A mole perceat

silver perchlorate (No. I) yielded £mfasm af 8.% s.d 10.1% ever the

respective contols at sea keel snd high alttaki. T*e s sem doped with

2 mole percent silver pewhlotste (No. 1) showed so efficiency incresse

over controls at either see level or hig skitude.

An examination of the FP S) (31/20/41 slaftige/cacivir floin e/

potassium perchlorate) composition data shows that the system doped with

1 mole percent silver perchiotate (No. 21) failed to give sufficiest light

to record. These results did nor -a g-e with the previous evaltatiof of this

system (No. 13) in which the efficiescies *veraged 6,000 caadlesecoods/

gram at 80,000 feet, an increase of 27% over the control. The light-exposed

system doped with I mole percent silver perchiorate (No. 22) gave results

which closely paralleled those previously obtained for the same non-lioht-

exposed composition (No. 13), with an increase at high altitude of 29,

over the control. As with the FP. 790 composition, the system doped with

2 mole percent silver perchlorate (No. 23) showed no efficiency increase

over the controls at either sea level or high altitude.

Sensitivity to impact and friction was determined for the doped and non-

doped systems but no definite relationship between sensitivity and doping

was apparent (Table 5, p 16).

6

Figure 1 (p 17) shows the configurarion of some average time-intensitycurves derived from the initiation of laboratory blends of doped perchlo-rate system. and their controls in the Poppy cartridge. Because differentcalibration factors are used in determining peak intensities, chese curvescannot be directly compared. However, by reference to Tables 1-3 (pp 12-14), the average times to peak, peak intensities, integral light values,and durations may be found.

Examination of the time-intensity profiles for the systems studied re-

veals the following:I

40/60 aluminum/potassium perchlorate. The peak is greater andduration longer at 80,000 feet simulated altitude. The integral light, how-ever, is greater at sea level because the curve is broader at peat: intensity.It can be assumed that at 80,000 feet the cooliag rte is faster and thereis a steep drop in intensity before the curve gradually levels off.

40/60 iluminum/poassie perohlrtne, I mole percen silver per-chlorate doped. At sea level, this system reveals a Womad curve. At8D,000 feet, -here is a sharp peak folloeed by rapid cooling. Again the

broad curve at sea level offsets the loater duration at 90,000 feet to give

greater integral light.

40/60 alumaio/passesw perchiorate, I male percent cupric per-chlorate doped. Although the dratim is seme tt reater at 80,000 feet,there is a broader catre at sea flel as ,el to a higher peak and conse-quently a gteater integral light.

40/60 alumsau/potassisw porchlota'e, I mole percent potassiumiodide doped. The peak intensities are comparaile at sea level and80,000 feet. At sea level there is a broader carve thm at 90,000 feet, wherecooling is depicted by a sharp drop it the crve. The integral light isgreater at sea level than at 80,000 feet.

30/20/50 calcium/aluminum/potassium petchlorate. The integral

light for this system is greater at 8&,000 feet than at sea level. The broad

curve at sea level does no: compensate for the high peak and longer dura-

tion at 80,000 feet. Again, at high altitude, there is rapid cooling and

gradual tapering off.

30/20/50 calcium/aluminum/potassium perchlorate, I mole percent

silvcr perchlorate doped. This system has a greater peak inten.ity, duration,

7

and integral light at 80,000 feet than it does at sea level. These valuesare greater than those for the nondoped control previously described.

30/20/50 calcium/aluminum/porassium perchlorate, 1 mole percentpotassium iodide doped. Thete is a broad curve at sea level but the peakintensity and duration at 80,000 feet account for a greater integral light.There is rapid cooling of very short duration followed by gradual taperingoff.

31/20/49 aluminum/calcium fluoride/potassium perchlorate. Becauseof higher peak intensity and longer duration, the integral light is greaterat 80,000 feet. There are no sharp peaks at either elevation.

31/20/49 aluminum/calcum fluoride/potassium perchlorate, I molepercent silver perchlorate doped. This system has a higher peak intensity,duration, and integral light at 60,000 feet thme it does at sea level. Thesevalues are also greater dho* coveapoedieg values for the control. Again,no sharp peaks ae present.

31/20/49 alumiem/calcium/ fiaride/ptasium perchlorate, I molepercent cupric perchlorate doped. Tis s9ueim was very erratic at80,000 feet. The one curve ektained at altitude teided to peak sharply.

31/20/49 aluminum/caLtius flueride/pmassism perchlorate, I molepercent potassium iodide doped. Tie comdigratio of both curves at sealevel and 80,000 feet is simlar. However, a* examination of the peak in-tensity, duration, and itegral light reveals that these values are greaterit 80,000 feet.

CONCLUSIONS

1. It can be hypothesized that new nucleation sites formed by impuritiesaffect the rate-governing factors for solid-solid reactions.

2. The purity of materials and the manner in which the dopant is intro-duced into the oxidant seem to be factors controlling the luminosity outputof Ag+ ion doped perchlorates, particr cly at 80,000 feet. This is indi-cated by the results obtained with both laboratory and plant scale prepara-tions (e.g., 100-gram and 5-pound lots). In one instance, laboratory

8

preparations for the 60/40 potassium perchlorae/aluminum in which theoxidant was doped with Ag+ ion gave luminosity increases of 257% whencompared to the control at 80,000 feet. However, this finding could not beduplicated in a second experiment.

3. The systems containing the light-exposed I mole percent silver per-chlorate were more efficient at 80,000 feet than systems containing non-light-exposed doped oxidant. The low order performance of the aluminumcalcium fluoride/potassium percblorate loped wih I mole percent silver

erchlorate as well as the considerably poom lwimeity data obtainedon the retest of the similarly doped cakism/al minm/potassiom perckle-rate system cannot at present be esplaifed.

4. Sensitivity to impact and friction for the doped symems did not fol-low any set pattern. Ignition tempersule values, homwe, are t" epoed tobe lower for the doped perchlorates (Ref 3).

5. The usual trend of the superior lhmimosity cberaceetistics of 60/40potassium perchlorate/aluminum whe compared to the FP 790 system

(30/2D/50 calcium/aluminum/po:assium perchilorate) at sea level was re-versed when Ag ion doped perchlorate was uaed (5,%G9 to 7,330 and8,200 candlescconds/gram, respectirvely)

6. Evidentiy a critical concentration is necessary for doping perchlo-rates. A silver ion concentration derived from 2 mole percent silver per-chlorate proves less efficient than a concentratioa from I mole percentsilver erchlorate.

RECOMMENDATIOKS

It is recommended that:

1. The evaluation of dopants be continued in flash and flare com-positions. In addition, te effects of aging, particle size, and particle

surface should be determ*ined.

2. The activation energies for doped and nondor-.d perchlorates be

deter-ined and correlated, if possible, with luminous outputs in flash

systens.

9

EXPERIMENTAL PROCEDURES

Properot;on of Mateials

Potassium perchlorate (1.0 g/100 cc) was dissolved in distilied water

at 100°C. The solution was filte-ed while hot through fine filte"r paper and

the funnel was kept warm by means of a heating mantle. The filtrate was

then placed in an ice bath and precipitated with constant stirring. The

supernatant was then descanted, and the recrystallized perchlorate was

air dried for one hour and owes dried versight at 100-110*C.

The recrystallized potassivm pe mblee was thee dissolved in distilled

water and heated to I00C. One mole peime of the doping aweriai was

introduced into the solution with wimer 4 se solution was then evapo-

rated to dryness. After driyg vemk& at 131-1109C the salt was gentlyground and stored in browm beetles. hese secessay, particle sizes weredetermined and adjusted to !: ekves byr ball milling.

BInAding and Losda Passeds

Compositions were ;*? blemded - le edeie Pam p cartridges in ac-cordance with sequence of aoptiow PAM' No. 5, -Sssember 1957, and allcartridges were loaded taotely i s &vrsace witit L.4diag Branch Se-quesce T 1024-2-11-5. Ewb camidw touti ed a 200 mx lead azide

charge at the base of a Am jea iMlm coasis6g of 90110 barium

chromaee/botaf. isiuitie was Puaired by SMS of. squib.

Testing

All cartridges were tested i* the Pyrowhics L.aboratory s simulated

high altitude chamber. The items *eve fired at right angle to the photocell.An oscilloscope with a high-speed camera attachment was used to recordthe photocell output as a function of time. An integrator was used to com-pute the integral light.

Motriols

The following materials were used-

1. Calcium, atomized, 36 micron, Valley .etallurgi-al ProcessingCompany

2. Potassium perchlorate, reagent grade, Fisher Scientific Company

13

3. Alutinum, atomized, 15 micron, Allied Chemical Company

4. Poppy photoflash cartridge, Drawing number CXP-II1207,December 3, 1959

5. Silver perchlorate (anhydrous', G. F. Smith Chemical Company

6. Potassaum iodide (Fisher Certified, A.C.S.), Fisher ScientificCompany

7. Cupric perchlorate (hydrated) (Fisher Certified), Fisher ScientificCompanyI

8- Calcium fluoride, reagent grade, j. T. Baker Chemical Company.

L. E. S. Feetm, D. A. A diW *ad J. J. Cwsi, *"rft Effects .1 X.Rayand Gamma Ray Tnafa an -w &eIheam Decm.szxoa of AmmoniumPerchiocate in the "Ju Stot," of Pbys. Ckt-t. 64, V727 (1960)

2. E. S. Freeman a D. A. Andersn, 'Vaernvasms as the Decwposition ofX-Ray krn diaue .'mei Paloera .'" I. of Pys. Cbm 65, 1662 (1,61)

3. E. S. Freeman, "Eacycate6& of X-Rays m= 4 C a Rys,' ReinholdPublisls, Inc. (1. pFirs)

4. E. S. Feema, and D. A. Adecae, "1be EMeat of Doping on the ChemicalReactivity of Potassivm Pcrchiwdsa,," . of Imwuic CbeM. (Pending) (1962)

5. E. S. Freeman and 0. -. Anderson, npublisbed ocik on this subject

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DISTIBUTIO LIST

C.4aMIMES O.wrPiradmity Aatse2aIATIN: lecimaical lidgcadom. SeccdeI

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AL-y mmuieI CmamdRaD DirecgaragReSeud& DziiSuoaDep(e AcgmrIwashiar.f2' D.. C.

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Comnaaddmj Officer!~~jePueta * Sappiir Alewc

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Depc of &he Naillareig Of NiexI TeapoesATYX*: RRM 1 -

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Copy No.

Armed Services Explosives Safety Board

Washington 25, D. C. 32

Chief, Research & Development

Department of the ArmyWashington 25, D. C. 33

CommanderNaval Ammunition DepotATTN: Pyrotechnic Research & Development Dept 34

Crane, Indiana

Chemical Research & Development LaboratoriesATTN: Technical Library 35

Edgewood Arsenal, Maryland

Commanding OfficerHarry Diamond LaboratoriesATTN: Library 36

Connecticut Ave & Van Ness St, NW

Washington 25, D. C.

Dept of the NavyOffice of Naval ResearchATTN: Code 423 37Washington 25, D. C.

DirectorU. S.- Nav-l Research LaboratoryATTN: Code 2027 38

Washington 25, D. C.

Commanding OfficerFrakford ArsenalATTN: Pitman-Dunn Laboratory 39

Bridge & Tacony StreetsPhiladelphia 37, Pa.

19

£

Copy m.

CommanderNaval Ordnance LaboratorySilver Spring

Maryland 4

CommanderWright Air Development Center

ATTN: WCLFE-3 41Wright-Patterson Air Force BaseOhio

Commanding OfficerRedstone ArsenalAlabam 42

CommanderAir Research & Development CommandAndrews Air Force Base

EWashington 25, D. C. 43

CommanderU. S. Naval Ordnance Test StationChina Lake, California 4

Commanding OfficerArmy Research Office (Duke Station)Box CMDurham, North Carolina 45

Director of Research & DevelopmentDept of the Air ForceHeadquarters, USAF, DCS/DATVN: AFDRD-EQ-3 4

Washington 25, D. C.

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