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Title: Parametric neutron activation analysis of samples generating complex. gamma. -ray spectra. [Neutron reactions]

Abstract

The accuracy of multielement quantitative determinations by parametric neutron activation analysis using Fe--Ru flux monitors is compared with that obtained by relative measurements using Standard Reference Materials (SRMs) from NBS. Agreement is good. Isotopes with a large ratio of resonance integral/thermal cross section require empirical correction factors. Deviation of the resonance flux in the reactor reflectors from a 1/E distribution appears responsible for at least part of the necessary corrections. The correction factors were found invariant from reactor to reactor. Molybdenum and certain rare earths can be determined by parametric counting in the presence of comparable amounts of uranium; interference by fission products is eliminated by calculations including the fission yields. 7 tables.

Authors:
 [1]; ;
  1. (Bell Telephone Labs., Inc., Allentown, PA)
Publication Date:
OSTI Identifier:
6141281
Resource Type:
Journal Article
Journal Name:
Anal. Chem.; (United States)
Additional Journal Information:
Journal Volume: 51:2
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACTIVATION ANALYSIS; ACCURACY; MOLYBDENUM; RARE EARTHS; URANIUM; COMPARATIVE EVALUATIONS; CORRECTIONS; COUNTING TECHNIQUES; EXPERIMENTAL DATA; FLUXMETERS; GAMMA SPECTRA; MULTI-ELEMENT ANALYSIS; NEUTRON REACTIONS; QUANTITATIVE CHEMICAL ANALYSIS; TABLES; TRACE AMOUNTS; US NBS; ACTINIDES; BARYON REACTIONS; CHARGED-PARTICLE ACTIVATION; CHEMICAL ANALYSIS; DATA; DATA FORMS; ELEMENTS; HADRON REACTIONS; INFORMATION; MEASURING INSTRUMENTS; METALS; NATIONAL ORGANIZATIONS; NUCLEAR REACTIONS; NUCLEON REACTIONS; NUMERICAL DATA; PHOTON ACTIVATION ANALYSIS; REFRACTORY METALS; SPECTRA; TRANSITION ELEMENTS; 400101* - Activation, Nuclear Reaction, Radiometric & Radiochemical Procedures

Citation Formats

Schmidt, P.F., Riley, J.E. Jr., and McMillan, D.J. Parametric neutron activation analysis of samples generating complex. gamma. -ray spectra. [Neutron reactions]. United States: N. p., 1979. Web. doi:10.1021/ac50038a009.
Schmidt, P.F., Riley, J.E. Jr., & McMillan, D.J. Parametric neutron activation analysis of samples generating complex. gamma. -ray spectra. [Neutron reactions]. United States. doi:10.1021/ac50038a009.
Schmidt, P.F., Riley, J.E. Jr., and McMillan, D.J. Thu . "Parametric neutron activation analysis of samples generating complex. gamma. -ray spectra. [Neutron reactions]". United States. doi:10.1021/ac50038a009.
@article{osti_6141281,
title = {Parametric neutron activation analysis of samples generating complex. gamma. -ray spectra. [Neutron reactions]},
author = {Schmidt, P.F. and Riley, J.E. Jr. and McMillan, D.J.},
abstractNote = {The accuracy of multielement quantitative determinations by parametric neutron activation analysis using Fe--Ru flux monitors is compared with that obtained by relative measurements using Standard Reference Materials (SRMs) from NBS. Agreement is good. Isotopes with a large ratio of resonance integral/thermal cross section require empirical correction factors. Deviation of the resonance flux in the reactor reflectors from a 1/E distribution appears responsible for at least part of the necessary corrections. The correction factors were found invariant from reactor to reactor. Molybdenum and certain rare earths can be determined by parametric counting in the presence of comparable amounts of uranium; interference by fission products is eliminated by calculations including the fission yields. 7 tables.},
doi = {10.1021/ac50038a009},
journal = {Anal. Chem.; (United States)},
number = ,
volume = 51:2,
place = {United States},
year = {1979},
month = {2}
}