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Activation analysis opportunities using cold neutron beams

Conference:

Abstract

Guided beams of cold neutrons being installed at a number of research reactors may become increasingly available for analytical research. A guided cold beam will provide higher neutron fluence rates and lower background interferences than in present facilities. In an optimized facility, fluence rates of 10/sup 9/ nxcm/sup -2/xs/sup -1/ are obtainable. Focusing a large area beam onto a small target will further increase the neutron intensity. In addition, the shift to lower neutron energy increases the effective cross sections. The absence of fast neutrons and gamma rays permits detectors to be placed near the sample without intolerable background, and thus the efficiency for counting prompt gamma rays can be much higher than in present systems. Measurements made at the hydrogen cold source of the FRJ-2 (DIDO) reactor at the KFA provide a numerical evaluation of the improvements in PGAA with respect to signal-to-background ratios of important elements and matrices. (author) 15 refs.
Publication Date:
May 01, 1987
Product Type:
Conference
Report Number:
CONF-8606127-
Reference Number:
AIX-19-026393; EDB-88-079112
Resource Relation:
Journal Name: J. Radioanal. Nucl. Chem.; (Switzerland); Conference: 7. international conference on modern trends in activation analysis, Copenhagen, Denmark, 23 Jun 1986
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COLD NEUTRONS; NUCLEAR REACTION ANALYSIS; PROMPT GAMMA RADIATION; CAPTURE; IRRADIATION DEVICES; NEUTRON BEAMS; NEUTRON GUIDES; NEUTRON REACTIONS; NONDESTRUCTIVE ANALYSIS; QUANTITATIVE CHEMICAL ANALYSIS; SENSITIVITY; SIGNAL-TO-NOISE RATIO; BARYON REACTIONS; BARYONS; BEAMS; CHEMICAL ANALYSIS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; GAMMA RADIATION; HADRON REACTIONS; HADRONS; IONIZING RADIATIONS; NEUTRONS; NUCLEAR REACTIONS; NUCLEON BEAMS; NUCLEON REACTIONS; NUCLEONS; PARTICLE BEAMS; RADIATIONS; 400101* - Activation, Nuclear Reaction, Radiometric & Radiochemical Procedures
OSTI ID:
5278235
Research Organizations:
National Bureau of Standards, Gaithersburg, MD (USA); Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Angewandte Physikalische Chemie
Country of Origin:
Switzerland
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JRNCD
Submitting Site:
INIS
Size:
Pages: 321-330
Announcement Date:

Conference:

Citation Formats

Lindstrom, R M, Zeisler, R, and Rossbach, M. Activation analysis opportunities using cold neutron beams. Switzerland: N. p., 1987. Web.
Lindstrom, R M, Zeisler, R, & Rossbach, M. Activation analysis opportunities using cold neutron beams. Switzerland.
Lindstrom, R M, Zeisler, R, and Rossbach, M. 1987. "Activation analysis opportunities using cold neutron beams." Switzerland.
@misc{etde_5278235,
title = {Activation analysis opportunities using cold neutron beams}
author = {Lindstrom, R M, Zeisler, R, and Rossbach, M}
abstractNote = {Guided beams of cold neutrons being installed at a number of research reactors may become increasingly available for analytical research. A guided cold beam will provide higher neutron fluence rates and lower background interferences than in present facilities. In an optimized facility, fluence rates of 10/sup 9/ nxcm/sup -2/xs/sup -1/ are obtainable. Focusing a large area beam onto a small target will further increase the neutron intensity. In addition, the shift to lower neutron energy increases the effective cross sections. The absence of fast neutrons and gamma rays permits detectors to be placed near the sample without intolerable background, and thus the efficiency for counting prompt gamma rays can be much higher than in present systems. Measurements made at the hydrogen cold source of the FRJ-2 (DIDO) reactor at the KFA provide a numerical evaluation of the improvements in PGAA with respect to signal-to-background ratios of important elements and matrices. (author) 15 refs.}
journal = {J. Radioanal. Nucl. Chem.; (Switzerland)}
place = {Switzerland}
year = {1987}
month = {May}
}