陈茂笃

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:中科院大连化学物理研究所

学位:博士

所在单位:物理学院

学科:原子与分子物理. 光学

电子邮箱:mdchen@dlut.edu.cn

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Quantum rotational scattering of H-2 and its isotopologues with He

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论文类型:期刊论文

发表时间:2017-01-01

发表刊物:MOLECULAR PHYSICS

收录刊物:SCIE、EI、Scopus

卷号:115

期号:19

页面范围:2442-2450

ISSN号:0026-8976

关键字:Molecular data; rotational quenching; cross section; rate coefficient

摘要:Quantum close-coupling computations of the rotational quenching of H-2 and its isotopologues due to He impact a re performed using a highly accurate potential energy surface. State-to-state cross sections are obtained in a wide range of collision energies between 10(-5)cm(-1 )and 10(-4)cm(-1), and the th eoretical rate coefficients are reported for temperatures ranging from 10(-4) K to 3000 K. Compared with previous studies, the well depth of the potential adopted in this study is larger, leading to stronger resonance effects in the cross sections of He-HD. The accurate potential was employed to investigate the isotope effects of H-2 in detail. The cross-section resonances shift towards lower collision energies and become stronger with increasing reduced mass. The calculated cross sections and rate coefficients of H-2 and its isotopic variants in collisions with He are provided to study the energy transfer in these systems.