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Preparation of Films and Sources for 4{pi} Counting; Prigotovlenie dlya 4{pi}-scheta plenok i istochnikov

Conference:

Abstract

To obtain a high degree of accuracy in determining the specific activity of sources by the absolute counting of particles with a 4{pi} counter, attention must be paid to the preparation of the radioactive sources. At the Mendeleev Institute of Metrology, celluloid films (surface density 8-10 {mu}/cm{sup 2}) coated on both sides with gold (10-15 {mu}g/cm{sup 2} ) or palladium (5-6 {mu}g/cm{sup 2}) are used as the bases of the radioactive sources. In order to reduce the correction for absorption of beta particles in the radioactive deposit, the base is specially treated with insulin. The authors present an extremely sensitive and effective method, employing the electron-capture nuclide {sup 54}Mn ({sup 54}Cr), for determining the uniform distribution of the active layer over the entire insulintreated surface. A solution of {sup 54}Mn ({sup 54}Cr) salt was applied to the insulin-tteated film, and the source of {sup 54}Cr ({sup 54}Mn) Auger K electrons thus obtained was investigated with the help of a proportional 4{pi} counter. The total number of {sup 54}Cr ({sup 54}Mn) Auger K electrons from the source was 8-12% less than the fluorescence coefficient (calculated from the number of {sup 54}Cr ({sup 54}Mn) K X-quanta emitted by the source) and the  More>>
Authors:
Konstantinov, A. A.; Sazonova, T. E. [1] 
  1. Vsesojuznyj Nauchno - Isledovatel'skij Institut Im. D.I. Mendeleeva, Leningrad, SSSR (Russian Federation)
Publication Date:
Mar 15, 1967
Product Type:
Conference
Report Number:
IAEA-SM-79/71
Resource Relation:
Conference: Symposium on Standardization of Radionuclides, Vienna (Austria), 10-14 Oct 1966; Other Information: 3 refs.; Related Information: In: Standardization of Radionuclides. Proceedings of a Symposium on Standardization of Radionuclides| 763 p.
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSOLUTE COUNTING; BETA PARTICLES; CHROMIUM 54; ELECTRON CAPTURE; ELECTRONS; FLUORESCENCE; GOLD; INSULIN; MANGANESE 54; PALLADIUM; RADIATION SOURCES
OSTI ID:
22121149
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
Russian
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M1564077242
Submitting Site:
INIS
Size:
page(s) 539-541
Announcement Date:
Aug 19, 2013

Conference:

Citation Formats

Konstantinov, A. A., and Sazonova, T. E. Preparation of Films and Sources for 4{pi} Counting; Prigotovlenie dlya 4{pi}-scheta plenok i istochnikov. IAEA: N. p., 1967. Web.
Konstantinov, A. A., & Sazonova, T. E. Preparation of Films and Sources for 4{pi} Counting; Prigotovlenie dlya 4{pi}-scheta plenok i istochnikov. IAEA.
Konstantinov, A. A., and Sazonova, T. E. 1967. "Preparation of Films and Sources for 4{pi} Counting; Prigotovlenie dlya 4{pi}-scheta plenok i istochnikov." IAEA.
@misc{etde_22121149,
title = {Preparation of Films and Sources for 4{pi} Counting; Prigotovlenie dlya 4{pi}-scheta plenok i istochnikov}
author = {Konstantinov, A. A., and Sazonova, T. E.}
abstractNote = {To obtain a high degree of accuracy in determining the specific activity of sources by the absolute counting of particles with a 4{pi} counter, attention must be paid to the preparation of the radioactive sources. At the Mendeleev Institute of Metrology, celluloid films (surface density 8-10 {mu}/cm{sup 2}) coated on both sides with gold (10-15 {mu}g/cm{sup 2} ) or palladium (5-6 {mu}g/cm{sup 2}) are used as the bases of the radioactive sources. In order to reduce the correction for absorption of beta particles in the radioactive deposit, the base is specially treated with insulin. The authors present an extremely sensitive and effective method, employing the electron-capture nuclide {sup 54}Mn ({sup 54}Cr), for determining the uniform distribution of the active layer over the entire insulintreated surface. A solution of {sup 54}Mn ({sup 54}Cr) salt was applied to the insulin-tteated film, and the source of {sup 54}Cr ({sup 54}Mn) Auger K electrons thus obtained was investigated with the help of a proportional 4{pi} counter. The total number of {sup 54}Cr ({sup 54}Mn) Auger K electrons from the source was 8-12% less than the fluorescence coefficient (calculated from the number of {sup 54}Cr ({sup 54}Mn) K X-quanta emitted by the source) and the number of K electrons absorbed in the film (determined by the 'sandwich' method). From the differences, for insulintreated and untreated {sup 54}Mn ({sup 54}Cr) sources, between the calculated and recorded number of Auger electrons it is possible to reach a definite conclusion regarding the quality of the insulin treatment. (author) [Russian] Dlja poluchenija vysokoj tochnosti izmerenij pri opredelenii udel'noj aktivnosti istochnikov metodom absoljutnogo scheta chastic s pomoshh'ju 4{pi}- schetchika, bol'shoe vnimanie dolzhno byt' udeleno prigotovleniju radioaktivnyh istochnikov. Vo VNIIM v kachestve podlozhek radioaktivnyh istochnikov ispol'zujutsja celluloidnye plenki (poverhnostnaja plot- nost' 8-10 mkg/sm{sup 2} ) , metallizirovannye s obeih storon zolotom (10 - 15 mkg/sm{sup 2}) ili palladiem (5 - 6 mkg/sm2 ) . Dlja umen'shenija popravki na pogloshhenie 8-chastic v sloe radioaktivnogo osadka primenjaetsja special'naja obrabotka podlozhki insulinom. Predlozhen ochen' chuvstvitel'nyj i jeffektivnyj metod dlja opredelenija ravno- mernosti nanesenija aktivnogo osadka po vsej obrabotannoj insulinom ploshhadi istoch- nika s ispol'zovaniem jelektronno-zahvatnogo nuklida marganec-54 (hrom-54). Na plenku, obrabotannuju insulinom, nanosilsja rastvor soli marganec-54 (hrom-54); poluchennyj istochnik K-jelektronov Ozhe hrom-54 (marganec-54) issledovalsja v proporcional'nom 4l- schetchike. Obshhee chislo K-jelektronov Ozhe hrom-54 (marganec-54), kotorye vyhodili iz istochnika, bylo men'she na 8-12% znachenija, rasschitannogo na osnovanii chisla KH-kvantov hroma-54 (marganec-54), ispuskaemyh istochnikom, kojef- ficienta fluorescencii i chisla K-jelektronov, pogloshhennyh v plenke, kotoroe oprede- ljalos' metodom {sup s}jendvicha{sup .} Ishodja iz raznostej mezhdu raschetnym i zaregistriro- vannym chislo'm jelektronov Ozhe dlja istochnikov marganec-54 (hrom-54), obrabotannyh in- sulinom i neobrabotannyh, mozhno odnoznachno sudit' o kachestve obrabotki insulinom istochnikov. (author)}
place = {IAEA}
year = {1967}
month = {Mar}
}