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arXiv 2409.09014cond-mat.mtrl-sci
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铌中氢和氘的隧穿

Hydrogen and Deuterium Tunneling in Niobium

Abdulaziz Abogoda, W. A. Shelton, I. Vekhter, J. A. Sauls

AI总结:

本研究通过密度泛函方法计算了铌中氧杂质捕获的氢和氘原子的双阱势与隧穿劈裂,结果与热容和中子散射实验分析一致。

摘要:

我们使用密度泛函方法确定了被氧杂质捕获并嵌入体相铌中的氢和氘原子的原子构型。我们计算了O-H和O-D杂质的双阱势、波函数以及氢和氘原子的隧穿劈裂。我们的结果与对低浓度O-H和O-D的铌进行热容和中子散射测量分析所得的结果一致。

英文摘要:

We use density functional methods to identify the atomic configurations of H and D atoms trapped by O impurities and embedded in bulk Nb. We calculate the double-well potential for O-H and O-D impurities, wave functions, and tunnel splittings for H and D atoms. Our results are in agreement with those obtained from analysis of heat capacity and neutron scattering measurements on Nb with low concentrations of O-H and O-D.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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