PROMPT-GAMMA ACTIVATION-ANALYSIS

被引：65

作者：

LINDSTROM, RM

机构：

[1] Natl Inst of Standards and, Technology, Gaithersburg, MD

来源：

JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY | 1993年 / 98卷 / 01期

关键词：

ACTIVATION ANALYSIS; COLD NEUTRON BEAMS; ELEMENTAL ANALYSIS; NEUTRON CAPTURE GAMMA RAYS; NUCLEAR ANALYTICAL METHODS; PROMPT GAMMA-RAYS;

D O I：

10.6028/jres.098.009

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A permanent, full-time instrument for prompt-gamma activation analysis is nearing completion as part of the Cold Neutron Research Facility (CNRF). The design of the analytical system has been optimized for high gamma detection efficiency and low background, particularly for hydrogen. Because of the purity of the neutron beam, shielding requirements are modest and the scatter-capture background is low. As a result of a compact sample-detector geometry, the sensitivity (counting rate per gram of analyte) is a factor of four better than the existing Maryland-NIST thermal-neutron instrument at this reactor. Hydrogen backgrounds of a few micrograms bate already been achieved, which promises to be of value in numerous applications where quantitative nondestructive analysis of small quantities of hydrogen in materials is necessary.

引用

页码：127 / 133

页数：7

共 38 条

[1] FACILITY FOR NONDESTRUCTIVE ANALYSIS FOR MAJOR AND TRACE-ELEMENTS USING NEUTRON-CAPTURE GAMMA-RAY SPECTROMETRY [J].