Confined variational calculations of low-energy electron-helium scattering

被引：7
|
作者：
Wan, J-Y [1 ,2 ]
Wu, M-S [1 ]
Zhang, J-Y [1 ]
Yan, Z-C [1 ,3 ]
机构：
[1] Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Univ New Brunswick, Dept Phys, Fredericton, NB E3B 5A3, Canada
来源：
PHYSICAL REVIEW A | 2021年 / 103卷 / 04期
基金：
加拿大自然科学与工程研究理事会; 中国国家自然科学基金;
关键词：
CROSS-SECTION MEASUREMENTS; AB-INITIO CALCULATION; VERY-LOW ENERGIES; ELASTIC-SCATTERING; HE; COLLISION; HYDROGEN; LENGTH; NE; AR;
D O I：
10.1103/PhysRevA.103.042814
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The S-, P-, and D-wave elastic scattering of electrons by atomic helium with the scattering energy between 0.136 and 16.463 eV is studied using the confined variational method. Our calculated phase shifts improve the best published results by at least one order of magnitude. The finite nuclear mass effect on the S-wave phase shift at very low scattering energy between 0.022 and 0.067 eV is investigated, and the accurate S-wave scattering length is determined to be 1.1723a(0,) where a(0) is the Bohr radius. The results reported here can serve as a benchmark for other theoretical and experimental studies.
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页数：6
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