中国物理B ›› 2022, Vol. 31 ›› Issue (8): 83402-083402.doi: 10.1088/1674-1056/ac4482

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Elastic electron scattering with CH2Br2 and CCl2Br2: The role of the polarization effects

Xiaoli Zhao(赵小利)1,† and Kedong Wang(王克栋)2,‡   

  1. 1 School of Science and Technology for Opto-electronic Information, Yantai University, Yantai 264005, China;
    2 School of Physics, Henan Normal University, Xinxiang 453007, China
  • 收稿日期:2021-11-06 修回日期:2021-12-15 接受日期:2021-12-18 出版日期:2022-07-18 发布日期:2022-07-27
  • 通讯作者: Xiaoli Zhao, Kedong Wang E-mail:zhaoxiaoli513@126.com;wangkd@htu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U1504109 and 11604085) and the Natural Science Foundation of Henan Province, China (Grant No. 212300410054).

Elastic electron scattering with CH2Br2 and CCl2Br2: The role of the polarization effects

Xiaoli Zhao(赵小利)1,† and Kedong Wang(王克栋)2,‡   

  1. 1 School of Science and Technology for Opto-electronic Information, Yantai University, Yantai 264005, China;
    2 School of Physics, Henan Normal University, Xinxiang 453007, China
  • Received:2021-11-06 Revised:2021-12-15 Accepted:2021-12-18 Online:2022-07-18 Published:2022-07-27
  • Contact: Xiaoli Zhao, Kedong Wang E-mail:zhaoxiaoli513@126.com;wangkd@htu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U1504109 and 11604085) and the Natural Science Foundation of Henan Province, China (Grant No. 212300410054).

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摘要： We present elastic electron scattering cross sections with holmethane molecules CH2Br2 and CCl2Br2 in the low-energy region ranging from 0.01 eV to 20 eV. The calculations are performed with the R-matrix method in static-exchange plus polarization (SEP) and close-coupling (CC) approximations. The integral, differential, and momentum transfer cross sections are calculated. The convergence of the obtained cross sections is checked at four different levels of SEP approximation. The predicted positions of the resonances agree well with available results. The precise resonance parameters are found to be sensitive to the treatment of polarization effects employed. We find that the polarization has a substantial effect on the cross sections, and this effect becomes even more important for lower impact energies.

关键词: electron scattering, elastic cross section, shape resonance

Abstract: We present elastic electron scattering cross sections with holmethane molecules CH2Br2 and CCl2Br2 in the low-energy region ranging from 0.01 eV to 20 eV. The calculations are performed with the R-matrix method in static-exchange plus polarization (SEP) and close-coupling (CC) approximations. The integral, differential, and momentum transfer cross sections are calculated. The convergence of the obtained cross sections is checked at four different levels of SEP approximation. The predicted positions of the resonances agree well with available results. The precise resonance parameters are found to be sensitive to the treatment of polarization effects employed. We find that the polarization has a substantial effect on the cross sections, and this effect becomes even more important for lower impact energies.

Key words: electron scattering, elastic cross section, shape resonance

中图分类号:  (Elastic scattering)

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