Determination and validation of prompt k0-factors with a monochromatic neutron beam at the Dhruva reactor

Details Determination and validation of prompt k0-factors with a monochromatic neutron beam at the Dhruva reactor Determination and validation of prompt k0-factors with a monochromatic neutron beam at the Dhruva reactor

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006nimpa.564..662n&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 564, Issue 2, p. 662-668.

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2

Activation Analysis And Other Radiochemical Methods, Metals, Semimetals, And Alloys

Scientific paper

Prompt Gamma-ray Neutron Activation Analysis (PGNAA) was carried out using a reflected neutron beam of 0.018 eV energy at the Dhruva research reactor, Bhabha Atomic Research Centre, Mumbai, India. The neutron beam characteristics, such as dimension, homogeneity and thermal equivalent flux were evaluated. The prompt k0-factors of about 15 elements were determined versus the 1951.1 keV gamma-ray of the 35Cl(n,γ) reaction. These prompt k0-factors are compared with the recommended k0-values for thermal neutrons and were found to be in good agreement, except for Gd, Cd and Hg. The internal mono-standard method was applied to analyze a meteorite and a stainless steel alloy (SS 316 M) using the recommended k0-values from the literature. As to the alloy, the measured concentrations were in good agreement with the nominal composition. For the meteorite sample, the concentrations of the major elements were in good agreement with the values determined using conventional neutron activation analysis.

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