COLD NEUTRON PROMPT GAMMA-ACTIVATION ANALYSIS AT NIST - A PROGRESS REPORT

被引：23

作者：

PAUL, RL ^{[1
]}

LINDSTROM, RM ^{[1
]}

VINCENT, DH ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT NUCL ENGN,ANN ARBOR,MI 48109

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES | 1994年 / 180卷 / 02期

关键词：

D O I：

10.1007/BF02035914

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An instrument for prompt gamma-ray activation analysis is now in operation at the NIST Cold Neutron Research Facility (CNRF). The cold neutron beam is relatively free of contamination by fast neutrons and reactor gamma rays, and the neutron fluence rate is 1.5 . 10(8) cm-2 . s-1 (thermal equivalent). As a result of a compact target-detector geometry the sensitivity is better by a factor of as much as seven than that obtained with an existing thermal instrument, and hydrogen background is a factor of 50 lower. We have applied this instrument to multielement analysis of the Allende meteorite and other materials.

引用

页码：263 / 269

页数：7

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