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Procedures to analyse gamma-ray spectra obtained from the ORTEC or nuclear dataND-680 system by ORTEC's analysis software packages incorporated into a separateIBM-PC computer

Forskningscenter Risø, Roskilde

Publication date:1990

Document VersionPublisher's PDF, also known as Version of record

Link back to DTU Orbit

Citation (APA):Zhen, Z. X. (1990). Procedures to analyse gamma-ray spectra obtained from the ORTEC or nuclear data ND-680 system by ORTEC's analysis software packages incorporated into a separate IBM-PC computer. (Risø-M;No. 2897).

Risø-M-2897

Procedures to Analyse 7-ray Spectra Obtained from the ORTEC or Nuclear Data ND-680 System by ORTEC's Analysis Software Packages Incorporated into a Separate IBM-PC Computer

Zhang Xiu Zhen

Risø National Laboratory, DK-4000 Roskilde, Denmark January 1990

Procedures to Analyse 7-ray Spectra Obtained from the ORTEC or Nuclear Data ND-680 System by ORTECs Analysis Software Packages Incorporated into a Separate IBM-PC Computer Zhang Xiu Zhen

Risø National Laboratory, DK-4000 Roskilde, Denmark January 1990

Abstract A detailed description is presented for processing -y-spectra produced by means of Ortec or Nuclear Data spectrometry systems on an off-line IBM-PC The ORTEC analysis software packages were transferred to and implemented on the PC A/T, and the different spectra were recorded on discs and subsequently brought into the format required by the program for the calculation of photo peak areas.

ISBN-87-550-1679-0 ISSN 0418-6435

Grafisk Service, Risø 1990

Risø-M-2897

Contents

Page

Section 1. Introduction ~- - 5

Section 2. Preparing to use the IBM-PC 6

Stction 3. Analysis of the -y-ray spectra from an ORTEC instrument by the ORTEC software packages stored in the separate IBM-PC 6

Section 4. Analysis of the Y-ray spectrum from Nuclear Data ND-680 System by the ORTEC software packages available in the separate IBM-PC 11

Bibliography 22

Rirø-M-2897 3/

Section 1

Introduction

The net area (net counts) of the detected photo peaks in a -y-spectrum is an essential quantity in gamma-ray spectrometry. The numerical value of the net peak area for a detected photo peak, however, depends on the data evaluation strategy adopted by the computer program analyzing the obtained -y-ray spectrum. For a photo peak disturbed by strong background or/and by neighbouring strong photo peaks, or in multiplet with other peaks, the value of the net peak area will vary significandy when determined by different programs. There is no way to affirm which program yields die most reliable results for the net peak area values for all 7-spectra obtained in practice. An approach to solve this problem is to analyze a -y-spectrum by different programs; this provides at kast some information about die reliability of the net peak area calculation by comparison of the results.

In die Isotope laboratory there are three programs available for 7-spectrum analysis: ORTEC's analysis software packages integrated in die ORTEC -y-ray spectrometer system; Nuclear Data program PEAK in the ND-680 system and a home-developed program PEAKB in a IBM-PC computer. It is of course desirable to make it possible applying all three programs to analyze yspectra obtained from die existing -y-spectrometer systems.

This work reports two procedures for applying the ORTEC analysis software packages stored in a separate IBM-PC computer to process

1. die 7-speccra obtained from ORTEC instruments but recorded on a disc as the transfer medium,

2. the -y-spectra obtained from die Nuclear Data ND-680 system but recorded on a disc as the transfer medium.

RiW-M-2897 5

Section 2

Preparing to use the IBM-PC

2.1. Make sere the ORTECs software packages have been incorporated into the separate computer.

2.2. Make the subdirectory INAAND for analyzing the -y-ray spectra obtained from the

Section 3

Analysis of the *y-ray spectra from an ORTEC instrument by the ORTEC software packages stored in the separate IBM-PC

3.1. As a demonstration, an ORTEC 7-ray spectrum, 8908O402.jpc, obuined from the OR­TEC instrument and recorded on a disc was processed using the IBM 100/1 SO MCA emulation software.

3.1.1. Copy the ORTEC -y-spectrum data file on the PC* hard disc

Insert data disc into driver A:, then

* Grey colour : prompt by computer system ** Black colour : enter by user

6 Riso-M-2897

*

3.1.2. Convert -spe fik to CHN file

113 . Call MCA enuhuoos software

The main menu of the system response will be shown on the computer screen window.

3.1.4. Load input file into MCA (current buffer of the PC)

T y p e Q J Q (9-RecaII)

The user will be prompted the filename:

INAA SV0*u40: CMS

Spectral graphics and textual information will be displayed as shown in Fig. 1 of the MCA manual.

3.13. Set Region-Of-Interest and perform calibration

-Typekey K t M J (6-calculation)

Calculation menu is shown on the screen as Fig. 6 • press Q | Softkey, select ROI (Refer to page 30, MCA manual) •Typekey £ Q Q (1 -calibration)

The system prompts as followed:

Select second peak

Enter next peak channel and energy in keV

3.1.6. Print outresalts of calculations

TypeQH Hardcopy output can be obtained dut shows statistical data related to rcgiomv-of-interest in dK selected MCB segment. Hardcopy output of the analysis of I90tO402-spc is shown in Appendix 1

12. Spectrum data analysis using ORTEC Applications Manager Software Module, MCA 10QY130 GELIGAM Software Module and Master Library.

3.2.1. Create a library of nuclides with gamma-ray energies, half-lives and branching ratios.

The existing library INAA1IB LIB, INAALONG.UB in subdirectory INAA can be used. Otherwise it is necessary to build a library (Refer to ORTEC manual, GELIGAM Example of Operations (A30-BI), page 2, ULI part).

3.22. Build Sample fik, Detector file, Analysis parameter fik and Calibration file.

These fiks were already combined in the ORTEC -y-spectrum dan fik, 89080402.spc. They are 001001.SMP, 001001.DET, O0IOOI.PRM, 001001 CLB. So it is not necessary to create these fiks when dealing with the -y-spectrum obtained from the ORTEC instru­ment Otherwise these files should be created (Refer to ORTEC manual, Applications Manager (A18-B1) Exampk of Operations, and GELIGAM Example of Operations (A30-BI).)

3.2.3. Create intermediate disc file (.UFO)

8 Risø-M-2897

GE1FAX VALUE GAMMA-1 GAMMA-2 GAMM/-9 - JL w t W M N i

NAA-1 JEESESfW NAA-3 ULD

^^•• i^feS^B^tø-a^:«

HWwgfti o »TftWrtyt fti :l

I ' *" i l . » « l j t i :

INAAl.OM', I.IH

RiW-M-2897

iXST-

3-2.4. Read the .UFO file and perform the analysis. Results of the analysis are transferred to the .UFO file.

A?o A N .

" •'•^^•••vffvF-

3.2.5. Generate a report file. The analysis results are formated according to the type of analysis performed.

10 RiW-M-2897

ja?^,g

B B S T

X2JL Print tfccoarpntoffeanaifsis resales

Tbe output fik is ghreai ia Appendix 2 (Analysis remits of die -y-ray spectnm data, SKMMtø-spc)

Section 4

Analysis of the 7-ray spectrum from Nuclear Data ND-680 System by the ORTEC software packages available in the separate IBM-PC

As a demonstration, a ND y-nf spectrum, 179037.SOO, obtained from the ND-680 system and recorded on a disc, was analyzed.

4.1. Enter input file and change the format of the input-file

4.1.1. :s*juiyi

4.U. Load Execute

Qnmpr ite^QQ|,tJ

£^^prpgram ite^QQ,tben

then NDOUT1 .DAT is created

4.1.3. Load] Execute I S B , then NDOUT2.DAT is created.

Ris#-M-2897 11

4.1.4. ASCBIN BAS

^x —„_,—**.,„. JT*m

WSBES

vmsj

iFlU

- , , . 1 ^ 1 h r t « . l t t-,V..v^ r ,--Y | -.,J»—»fc.

Tbe system prompts widi as shown above tod ask aser to select •options«

-•>-" * — - v - - * , - . l , . , , . j f X ^ A - J ^ - . y f . j ^ r ^ - - l . . - f c ^ ^ l * i .m j j . i j g . ,* •* i,..T , " - . - V - ^ - f e * , , « . T

>.,«,', ,^^4-~y, J». «.,•*,,*,» J

-i A*. , i . •*. j U i : J .«. t i Jtj J J3*^~4.y •

- , - „ . . > . . , > _ J P MJi.S*tJ-.<—*-*—r rW^£-. y f r r - ^ A v i . ̂ ^ M - A . ™ * X - A - i n . . ! ^ ^ ^ . . . J — , - , Jfi-^y * f

Jiiii.vil2Jk 'L:.i±I'

Now die .CHN fik was created, but dm fbcmat of dus fik is different from dut required. So die program ASCBIN will be excuted again but with tbe first opdon selection:

12 Ris#-M-2897

•rø&B

In order to be analyzed by the ORTEC software packages, the program ASCBIN will be excecuted once more with the second option selected to convert the new formed .DAT file to.CHNfile:

PER SPECTRUM CMAX8192)

:CONVEBTED(MAX10)1

Finally, the required .CHN file, i.e. 179037.CHN, was obtained. The printout of the 179037.CHN was presented in Appendix 3.

4.2. Data analysis using the IBM 100/1 SO MCA Emulation Software.

Following the procedures presented in 3.1.3 to 3.1.6. The analysis results, given in Appendix 4, were obtained.

4.3. Analysis of the 7-ray spectra from Nuclear Data ND-680 system using ORTEC Software Application Manager Software Module, MCA 100/150 GELIGAM Software Module and MCA 100/150 Master Library.

4.3.1. Create a sample description file

Riw-M-2897 13

\A18\Sample

AN UNKNOWN SAMPLh" FROM DR. K. HHY1X)RN

Now, the sample description file OOIOOI.SMP was created in \INAAND subdirectory.

4.3.2. Create a Detector description file

\A18\Detecior

m Wf*ymy/WWXMF*w>^*&**»*& <pswr#.

x*0cb*r}

Detector: GAMMA.-X/S 72

DATA FROM ND

Detector description file OOIOOI.DET was created in \INAAND subdirectory.

4.3.3. Create a GERPAR file

GERPAR program can be used to create or modify an analysis parameter file

\A18\GKRPAR

14 Risø-M-2897

g GERPAR VALUE GAMMA-I

I CAMMA-2 GAMMA^ NAA4 fiESERVED

M.fjV

PARAMETER SECTION-

i;VBINAALIB.LIB

RiW-M-2897 15

4.3.4. Create a preliminary .spc file

FECTRUM CONVERSION ROUTINE

|CO>YiaGHtl«$lG&GORTEC

179037.CHN

4.3.5. Create a new calibration file

\A*0\CI.B

(K)1(K)1 (.I.H

16 Risp-M-2897

This is another calibration

•BjwswswsfSSPS.^Rp'^'WSsa««:^; KMJWt f i s t IP 4ø • W&t ••&

vMv»Hvu»hnM-W»inNvhvk " ^ A V . %

:{NONE)i 179037.spc

\INAA\0010M U.H

RiW-M-2897 17

^AlSvConvei

6. Create an expected .spe file.

179037.CHN

Now the required 179037.spc file was created; this can be analyzed by the ORTEC software, in the s: me way as the -y-ray spectrum dau obtained directly from the ORTEC instrument.

7. Executing program AN 1

\A30\AN1

18 Risø-M-2897

GEXFARVAUÆ rCAMJWRf CAMMA-1

MSBJr

's i * i i : » ti 4i >V*

Ritø-M-2897

S. Executing program AN2

A*O AN:

9. Executing program RPT

A30 K l ' I

m&MMf^?#& rtWiTtf*miMMm7ifttiti

17fXH7 K I ' I

20 Risø-M-2897

10. Print out the analysis results.

The output is given in Appendix.

Riw-M-2897 21

Bibliography 1. K. Heydorn, »Encyclopedia of Medical Devices tnd Instrumentation«, Vohime 3> Neutron Activation Analysis. John Wiky & Sons, 1988.

2. IBM-PC DOS 3 JO manual

3. IBM-PC BASIC Reference

4. TURBO PASCAL 4.0, IMB» VERSION

5. ORTEC manual • New openting modes for the modd 918 Multichannel Buffer • ADCAM™ Multichannel Analyzer 100/150 Operator's Manual • Software File Structure Manual for the IBM-PC • Software Loading Instructions for IBM-PC • A18-B1 Applications Manager - Application Manager (A18-B2) Examples of Operation

- Basic Gamma-Ray Spectroscopy • A30-B1GELIGAM Germanium Analysis Software • Geligam (A30-B1) Examples of Operation - Model AS3 Master Library for Master Library Members.

22

Ris* National Laboratory Risø - M - 2897

THI* aatf MttwrU)

Procedures to Analyse t-ray Spectra Obtained from

the ORTEC or Nuclear Data ND-680 System by ORTEC"s

Analysis Software Packages Incorporated into a

Separate IBM-PC Computer

Zhang Xiu Zhen

h | N 23 IfcMM INnttatiMW M w w m 5

Data January 1990

Daaartnaat sr ft««*

Isotope Division

Craass awra rafistratia* wiirtu M

•rajsct/cantract aw.

ISBN 87-550-1679-0

Abstract (Max. MM char)

A detailed description is presented for processing T-spectra produced by means

of Ortec or Nuclear Data spectrometry systems on an off- l ine IBM-PC. The ORTEC

analysis software packages were transferred to and implemented on the PC A/T,

and the different spectra were recorded on discs and subsequently brought into

the format required by the program for the calculation of photo peak areas.

Oascrlatara - I N I S

COMPUTER PROGRAM DOCUMENTATION; DATA PROCESSING; GAMMA SPEC­

TROMETERS; MICROCOMPUTERS

AWWltwl# Oil PØQUMt ffOIII nM# LtvVWy« M M PWMMMI UDOFMOfy, (HMØ VlMl0f0?v rOfWfWIØMMføf nmØ),

tJO. 9ot «fl, DK-4000 H—MMt, Danmark. TaJaphona 43 V U11 art. SM/22M. TaJw: 4HW, Tateta: 4171M 27

HMMOOOMM*

Available on exchange from: Risø Library Risø National Laboratory, P.O. Box 49, DK-4000 Roskilde, Denmark Phone + 45 42 371212, ext. 2268/2269 ISBN 87-5504679-0 Telex 43116, Telefax + 45 46 75 56 27 ISSN 0418-6435