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3. Measurement of cross-section for the 139La(n,γ)140la reaction using reflected neutron beam at 0.0334 eV energy

Author

Islam Mohammad A., Hossain Syed M., Akter Farzana, Uddin Mohammad S., Naher Kamrun, and Tamim Umma

Subjects
monochromatic neutron, neutron capture cross-section, lanthanum, activation technique, research reactor, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

The experimental neutron capture cross-section for the 139La(n, g)140La reaction at 0.0334 eV was measured for the first time using activation technique. The obtained cross-section value amounted to 7.86 ± 0.55 b is in agreement with the evaluated data libraries ENDF/B-VII and JENDL-3.3. The present value measured at 0.0334 eV and the previous data at 0.0536 eV were extrapolated to the energy 0.0253 eV assuming 1/v dependence and the results were compared with the integrally measured values reported in the literature. The new data are thus useful to check the evaluated excitation function.

Published
2015
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