Evaluation of Thermal Neutron Scattering Data for H in ZrH<sub><i>x</i></sub> Based on Deterministic Method

Wang Lipeng; Zhang Xinyi; Jiang Duoyu; Hu Tianliang; Cao Liangzhi; Wu Hongchun; Cao Lu

doi:10.13832/j.jnpe.2023.05.0023

Volume 44 Issue 5

Oct. 2023

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Wang Lipeng, Zhang Xinyi, Jiang Duoyu, Hu Tianliang, Cao Liangzhi, Wu Hongchun, Cao Lu. Evaluation of Thermal Neutron Scattering Data for H in ZrHx Based on Deterministic Method[J]. Nuclear Power Engineering, 2023, 44(5): 23-29. doi: 10.13832/j.jnpe.2023.05.0023

Citation:

Wang Lipeng, Zhang Xinyi, Jiang Duoyu, Hu Tianliang, Cao Liangzhi, Wu Hongchun, Cao Lu. Evaluation of Thermal Neutron Scattering Data for H in ZrH_x Based on Deterministic Method[J]. Nuclear Power Engineering, 2023, 44(5): 23-29. doi: 10.13832/j.jnpe.2023.05.0023

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Evaluation of Thermal Neutron Scattering Data for H in ZrH_x Based on Deterministic Method

doi: 10.13832/j.jnpe.2023.05.0023

1.
Northwest Institute of Nuclear Technology, Xi’an, 710024, China
2.
School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China

Received Date: 2022-11-18
Rev Recd Date: 2023-05-08
Publish Date: 2023-10-13

Abstract

Abstract

ZrH_x has been widely used in nuclear technology because of its high H content and good moderating property. However, the thermal neutron scattering data generation of H in ZrH_x mostly uses direct numerical simulation method, which has not been evaluated with experimental data. In this paper, a fast determinstic evaluation method of thermal neutron scattering data of H in ZrH_x is presented, which is related to semi-empirical phonon model. It is completed by adjusting the thermal scattering data simulated by computer with the experimental data by using generalized least square method. The experimental data are based on the total cross-section measurements and the effective multiplication coefficient (k_eff) of the benchmark reactor. The results show that the optical range of the H phonon density in the modified ZrH_x is shifted to high energy region, and the total cross-section values are in good agreement with the experimental data. The accuracy of k_eff calculation for the two TRIGA reactors after adjustment has been improved.
- ZrH_x,
- Phonon density of states,
- Thermal neutron scattering data,
- Nuclear data evaluation

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References(14)

References

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