Measurement of nuclear inelastic scattering cross section of thorium-232 for 144 keV Si-filtered neurons.
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概要
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The nuclear inelastic scattering cross section of 232Th has been measured at 144 keV using a Si-filtered neutron beam from the University of Missouri Research Reactor (MURR). The energy spectrum of the scattered neutrons was measured with a spherical hydrogen-gas counter and a pulse-height-unfolding procedure. Data were taken at nine scattering angles from 30° to 150° in 15° increments. The results provide new experimental information below 250 keV. The angle-integrated cross section is 0.74 ± 0.05 barn, which agrees with the evalua-tion JENDL-2 and with a coupled-channel calculation where the inelastic scattering through the direct-excitation process of the collective rotational motion of a deformed nucleus is in-cluded as well as that through the compound-nucleus-formation process. Experimental re-sults have been obtained also for the angular dependence of the elastically scattered neutrons at 144 keV.
- 一般社団法人 日本原子力学会の論文
著者
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Fujita Yoshiaki
Research Reactor Institute Kyoto University
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Ohsawa Takaaki
Department Of Electric And Electronic Engineering School Of Science And Engineering Kinki University
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BRUGGER Robert
Research Reactor Facility and Department of Nuclear Engineering, the University of Missouri
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ALGER Don
Research Reactor Facility and Department of Nuclear Engineering, the University of Missouri
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MILLER William
Research Reactor Facility and Department of Nuclear Engineering, the University of Missouri
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