期刊
APPLIED RADIATION AND ISOTOPES
卷 68, 期 3, 页码 432-438出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2009.11.038
关键词
Neptunium-237; gamma-Ray intensities; Spectroscopy; Thermal neutron capture; Cross section; Activation
The relevant absolute gamma-ray emission probabilities from the beta-decay of Np-238 were measured by means of alpha- and gamma-spectroscopic techniques. We obtained values of (25.6 +/- 0.4)%, (8.9 +/- 0.2)% and (18.8 +/- 0.3)% for the 984.45-, 1025.87- and 1028.54-keV gamma-rays, respectively, in agreement with the previous measured ones. These intensities were used to deduce the thermal neutron capture cross section of Np-237 for which a value of (182.2 +/- 4.5) b is obtained higher by 11% than the recommended value. (C) 2009 Elsevier Ltd. All rights reserved.
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