Measurements of Neutron-induced Fission Cross Section of Americium-243 from Thermal Neutron Energy to 15 keV Using Lead Slowing-down Spectrometer and Thermal Neutron Facility.
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説明
The neutron-induced fission cross section of 243Am was measured relative to that of 235U from thermal neutron energy to 15 keV making use of a double fission chamber with 243Am and 235U electrodeposited layers. The data above 0.05 eV were measured using a lead slowing-down spectrometer coupled to an electron linear accelerator. A relative measurement to the 10B(n, α) reaction was also made using a BF3 counter at energies below 1 keV, and normalized to the absolute value obtained by using the cross section of the 235U(n,/) reaction between 200eV and IkeV. The existing experimental data by Wisshak and Kappeler, and by Knitter and Budtz-Jorgensen are in general agreement with the current measurement in the relevant energy region. However, the data by Seeger are considerably higher. The evaluated nuclear data in JENDL-3.2, ENDF/B-VI and JEF-2.2, whose data were broadened by the energy resolution function of the spectrometer, have been compared with the measured result. The fission cross section for thermal ne...
収録刊行物
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 36 20-28, 1999-01-01
Informa UK Limited
