Isotope effect in collision between heliumatom and hydrogen bromide molecule
Yu Chun-Ri(余春日)a)†, Cheng Xin-Lu(程新路)b), and Yang Xiang-Dong(杨向东)b)‡
aSchool of Physics & Electric Engineering, Anqing Teachers College, Anqing 246133, China; bInstitute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
Abstract The anisotropic potential developed in our previous research and the close-coupling method are applied to the HBr--$^{3}$He ($^{4}$He, $^{5}$He, $^{6}$He, $^{7}$He) system, and the partial cross sections (PCSs) at the incident energy of 60 meV are calculated. Based on the calculations, the influences of the isotope helium atom on PCSs are discussed in detail. The results show that the excitation PCSs converge faster than the elastic PCSs for the collision energy and the systems considered here. Also the excitation PCSs converge more rapidly for the high-excited states. The tail effect is present only in elastic scattering and low-excited states but not in high-excited states. With the increase of reduced mass of the collision system, the converging speed of the elastic and excitation PCSs slows down, and the tail effect goes up.
Received: 23 November 2007
Revised: 21 April 2008
Accepted manuscript online:
PACS:
34.50.Fa
(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
(Electronic excitation and ionization of molecules)
Fund: Project supported by the Natural
Science Foundation of Anhui Education Bureau of China and the
National Natural Science Foundation of China (Grant Nos 10676025 and
10574096)
Cite this article:
Yu Chun-Ri(余春日), Cheng Xin-Lu(程新路), and Yang Xiang-Dong(杨向东) Isotope effect in collision between heliumatom and hydrogen bromide molecule 2008 Chin. Phys. B 17 3322
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
