236U in uranium minerals and standards

被引：79

作者：

Berkovits, D

Feldstein, H

Ghelberg, S

Hershkowitz, A

Navon, E

Paul, M ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] Soreq NRC, IL-81800 Yavne, Israel

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 172卷

关键词：

D O I：

10.1016/S0168-583X(00)00152-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have recently extended our accelerator mass spectrometry (AMS) system to the detection of actinides for geophysical applications, taking U-236 as an interesting test case for this class of nuclides. We report on the development of the experimental setup and on preliminary measurements of U-236 in minerals and uranium standards. The isotopic abundance sensitivity is 1 x 10(-11). The natural U-236 abundance of five U-rich minerals were measured to be between 1 and 33 x 10(-11). U-236 is expected to be produced in situ by neutron capture on U-235. Three uranium standards material were measured and showed a large U-236 contamination. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：372 / 376

页数：5

共 13 条

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