Preparation of high-resolution 238U α-sources by electrodeposition: a comprehensive study

被引：24

作者：

Jobbagy, Viktor ^{[1
]}

Teresa Crespo, M. ^{[2
]}

Van Ammel, Raf ^{[1
]}

Marouli, Maria ^{[1
]}

Moens, Andre ^{[1
]}

Pomme, Stefaan ^{[1
]}

Garcia-Torano, Eduardo ^{[2
]}

机构：

[1] Commiss European Communities, IRMM, Joint Res Ctr, B-2440 Geel, Belgium

[2] CIEMAT, E-28040 Madrid, Spain

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 298卷 / 01期

关键词：

U-238; High-resolution alpha-spectrometry; Alpha-emission probability; Electrodeposition; PARTICLE SPECTROMETRY; ENERGY RESOLUTION; URANIUM; ACTINIDES; RADIATION; FILMS;

D O I：

10.1007/s10967-013-2444-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper the source preparation procedures for high-resolution U-238 sources are described and compared. This work was done within collaboration between CIEMAT and IRMM in the frame of MetroFission, a project of the European Metrology Research Programme, in order to determine the alpha-emission probabilities of U-238. U-238 was deposited from organic (iso-propanol) and inorganic-H2SO4/(NH4)(2)SO4, saturated NH4NO3-electrolyte solutions on metal backings. The parameters affecting electrodeposition were studied and optimized. The activity distribution of uranium was checked by autoradiography. Results show that the U-238 source quality is significantly better using the saturated NH4NO3 than the two other electrolytes. By this method, sources of 18.6-22 mm diameter, 26 mu g cm(-2) surface density, similar to 15-18 keV resolution and a peak to valley ratio higher than 50 could be made. This reconciles the inherently opposing requirements of high resolution and sufficient count rate needed to determine the alpha-emission probabilities accurately.

引用

页码：345 / 352

页数：8

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