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

Authors
PAUL RL LINDSTROM RM VINCENT DH
Citation
Rl. Paul et al., COLD NEUTRON PROMPT GAMMA-ACTIVATION ANALYSIS AT NIST - A PROGRESS REPORT, Journal of radioanalytical and nuclear chemistry, 180(2), 1994, pp. 263-269
Citations number
14
Categorie Soggetti
Chemistry Analytical","Nuclear Sciences & Tecnology","Chemistry Inorganic & Nuclear
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
180
Issue
2
Year of publication
1994
Pages
263 - 269
Database
ISI
SICI code
0236-5731(1994)180:2<263:CNPGAA>2.0.ZU;2-R
Abstract
An instrument for prompt gamma-ray activation analysis is now in opera tion at the NIST Cold Neutron Research Facility (CNRF). The cold neutr on beam is relatively free of contamination by fast neutrons and react or 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 geometr y 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 multieleme nt analysis of the Allende meteorite and other materials.