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
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.