Measurement of secondary neutron emission double-differential cross sections for 9Be induced by 21.65 plus or minus 0.07MeV neutrons

The neutron emission double-differential cross sections (DDX) of 9Be was measured at an incident neutron energy of 21.65MeV, using the multi-detector fast neutron time-of-flight (TOF) spectrometer on HI-13 Tandem Accelerator at the China Institute of Atomic Energy (CIAE). The data were deduced by co...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2016-05, Vol.375, p.8-12
Main Authors: Lan, Changlin, Ruan, Xichao, Chen, Guochang, Nie, Yangbo, Huang, Hanxiong, Bao, Jie, Zhou, Zuying, Tang, Hongqing, Kong, Xiangzhong, Peng, Meng
Format: Article
Language:English
Subjects:
Computer simulation
Cross sections
Cross sections (physics)
Energy measurement
Mathematical models
Monte Carlo methods
Neutron emission
Spectrometers
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Summary:The neutron emission double-differential cross sections (DDX) of 9Be was measured at an incident neutron energy of 21.65MeV, using the multi-detector fast neutron time-of-flight (TOF) spectrometer on HI-13 Tandem Accelerator at the China Institute of Atomic Energy (CIAE). The data were deduced by comparing the measured TOF spectra with the calculated ones using a realistic Monte-Carlo simulation. The DDX were normalized to n-p scattering cross sections which are a neutron scattering standard. The results of the elastic scattering angular distributions (DX) and the secondary neutron emission DDX at 25 different angles from 15deg to 145deg were presented. Meanwhile, a theoretical model based on the unified Hauser-Feshbach and exciton model for light nuclei was used to describe the double-differential cross sections of n+9Be, and the theoretical calculation results were compared with the measured cross sections.
ISSN:0168-583X
DOI:10.1016/j.nimb.2016.03.027