MA Yutu; ZU Tiejun; WU Hongchun; CAO Liangzhi

doi:10.7498/aps.74.20250928

Abstract

Metal hydrides are promising moderator materials in advanced reactors, where their thermal neutron scattering cross sections significantly affect the accuracy of reactor design. This study uses special quasi random structure (SQS) and first-principles lattice dynamics methods to calculate parameters such as the phonon densities of states of sub-stoichiometric zirconium hydride (ZrH_x) and yttrium hydride (YH_x). Based on these parameters, thermal scattering law (TSL) data for sub-stoichiometric hydrides are generated using the nuclear data processing code NECP-Atlas. The influences of hydrogen content on the thermal scattering cross sections of hydrides and the effective multiplication factor (k_eff) values of critical assemblies are analyzed. The result shows that variations in hydrogen content within hydrides lead to differences in thermal scattering cross sections, consequently affecting the neutron transport calculations of nuclear reactor. For the ICT003 and ICT013 benchmarks loaded with ZrH_x (with H/Zr ≈ 1.6), using the TSL data derived from ZrH_xwith other hydrogen content results in a maximum deviation of 104 pcm in k_eff. For the HCM003 benchmarks loaded with ZrH₂, the use of TSL from ZrH_x with other hydrogen content leads to a maximum deviation of 147 pcm in k_eff.

Keywords:

zirconium hydride /
yttrium hydride /
thermal scattering law data /
thermal neutron scattering cross section

Authors and contacts

Corresponding author: ZU Tiejun, tiejun@mail.xjtu.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 12135019) and the National Key Research and Development Program of China (Grant No. 2022YFB1902600).

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[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]

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基准题序号	ZrH_1.59	ZrH₂		ZrH_1.69		ZrH_1.41
基准题序号	k_eff	k_eff	偏差/pcm	k_eff	偏差/pcm	k_eff	偏差/pcm
ICT003_1	1.00308	1.00205	–103	1.00375	67	1.00412	104
ICT003_2	1.00791	1.00697	–94	1.00866	75	1.00864	73
ICT013_1	1.01204	1.01194	–10	1.01263	59	1.01274	70
ICT013_2	1.01189	1.01167	–22	1.01256	67	1.01272	83

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基准题序号	ZrH₂	ZrH_1.69		ZrH_1.59		ZrH_1.41
基准题序号	k_eff	k_eff	偏差/pcm	k_eff	偏差/pcm	k_eff	偏差/pcm
HCM003_1	0.99760	0.99673	–87	0.99764	4	0.99705	–55
HCM003_2	0.99798	0.99692	–106	0.99776	–22	0.99686	–112
HCM003_3	0.99778	0.99685	–93	0.99745	–33	0.99689	–89
HCM003_4	0.99818	0.99718	–100	0.99784	–34	0.99693	–125
HCM003_5	0.99838	0.99691	–147	0.99789	–49	0.99707	–131
HCM003_6	0.99795	0.99678	–117	0.99741	–54	0.99705	–90

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Vol. 74, Issue 22 - 2025-11-20

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