α-particle emission probabilities in the decay of 235U

被引：23

作者：

García-Toraño, E

Crespo, MT

Roteta, M

Sibbens, G

Pommé, S

Sánchez, AM

Montero, MPR

Woods, S

Pearce, A

机构：

[1] CIEMAT, Lab Metrol Radiac Ionizantes, E-28040 Madrid, Spain

[2] Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, Geel, Belgium

[3] Univ Extremadura, Dept Fis, Badajoz, Spain

[4] Natl Phys Lab, Radioact Metrol Grp, Teddington TW11 0LW, Middx, England

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 550卷 / 03期

关键词：

alpha emission; U-235; alpha-particles; emission probabilities;

D O I：

10.1016/j.nima.2005.05.059

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

U-235 decays by alpha-particle emission to Th-231. The decay scheme of this nuclide is very complex, with more than 20 alpha branches. Recommended values for P-alpha of this nuclide are based on measurements carried out in 1975. This work presents the results of new measurements made with Si detectors and sources of enriched uranium in the frame of the EUROMET 591 cooperation project. The use of improved measurement techniques and numerical analysis of spectra allowed a new set of P-alpha values for 13 lines with improved uncertainties to be obtained. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：581 / 592

页数：12

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