TY - JOUR
T1 - Elastic and electron capture processes in slow He+- He collision
AU - Wang, Yu
AU - Wang, Feng
AU - Lin, Xiaohe
AU - Liu, Ling
AU - Wu, Yong
AU - Wang, Jianguo
N1 - Publisher Copyright:
© 2023 The Authors.
PY - 2023/6/1
Y1 - 2023/6/1
N2 - Aims. The elastic and electron-capture processes of He+ ions with ground helium atoms are very important for studies in astrophysics. It is essential to have reliable state-selective charge transfer, elastic, and transport cross-sections, along with the corresponding reaction rate coefficient data, especially for low collision energies. Methods. We investigated the elastic and non-radiative electron-capture processes in He+(1s)- He(1s2) collisions are investigated employing the full quantum-mechanical molecular orbital close-coupling method. The adopted ab initio adiabatic potentials and coupling matrix elements were obtained by a multi-reference single- and double-excitation configuration interaction approach. Results. We computed the elastic, charge-transfer, and transport cross-sections in the energy range of 0.01- 2500eVamu-1 and the reaction rate coefficient in the temperature range of 10- 109 K. Good agreement was achieved when compared to the available experimental and theoretical results. Shape resonance, Regge, and Glory oscillations were also found in the elastic and charge transfer cross-sections in the energy region considered here.
AB - Aims. The elastic and electron-capture processes of He+ ions with ground helium atoms are very important for studies in astrophysics. It is essential to have reliable state-selective charge transfer, elastic, and transport cross-sections, along with the corresponding reaction rate coefficient data, especially for low collision energies. Methods. We investigated the elastic and non-radiative electron-capture processes in He+(1s)- He(1s2) collisions are investigated employing the full quantum-mechanical molecular orbital close-coupling method. The adopted ab initio adiabatic potentials and coupling matrix elements were obtained by a multi-reference single- and double-excitation configuration interaction approach. Results. We computed the elastic, charge-transfer, and transport cross-sections in the energy range of 0.01- 2500eVamu-1 and the reaction rate coefficient in the temperature range of 10- 109 K. Good agreement was achieved when compared to the available experimental and theoretical results. Shape resonance, Regge, and Glory oscillations were also found in the elastic and charge transfer cross-sections in the energy region considered here.
KW - Astroparticle physics
KW - Atomic data
KW - Atomic processes
UR - http://www.scopus.com/inward/record.url?scp=85163776452&partnerID=8YFLogxK
U2 - 10.1051/0004-6361/202244598
DO - 10.1051/0004-6361/202244598
M3 - Article
AN - SCOPUS:85163776452
SN - 0004-6361
VL - 674
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A201
ER -