Non-Elastic Processes in Atom Rydberg-Atom Collisions: Review of State of Art and Problems

Journal of astrophysics and astronomy

Lj. M. Ignjatović²  A. A. Mihajlov²  V. A. Srećković1²  M. S. Dimitrijević3 4¹  N. M. Sakan²  A. N. Klyucharev³ 

[1] Astronomical Observatory, Volgina 7, 11060 Belgrade 74, Serbia.$$;Institute of Physics, Univesity of Belgrade, P.O. Box 57, 11001, Belgrade, Serbia.$$;Department of Physics, St-Petersburg University, Ulianovskaya 1, 198904 St. Petersburg, Petrodvorets, Russia.$$

关键词: Atomic and molecular processes;    plasmas;    spectral line profiles.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

Inour previous research, it has been demonstrated that inelastic processes in atom Rydberg-atom collisions, such as chemi-ionization and ($n-n'$) mixing, should be considered together. Here we will review the present state-of-the-art and the actual problems. In this context, we will consider the influence of the ($n-n'$)-mixing during a symmetric atom Rydberg-atom collision processes on the intensity of chemi-ionization process. It will be taken into account H(1s) + H*(𝑛) collisional systems, where the principal quantum number is $n gg 1$. It will be demonstrated that the inclusion of ($n-n'$) mixing in the calculation, influences significantly on the values of chemi-ionization rate coefficients, particularly in the lower part of the block of the Rydberg states. Different possible channels of the ($n-n'$)-mixing influence on chemi-ionization rate coefficients will be demonstrated. The possibility of interpretation of the ($n-n'$)-mixing influence will be considered on the basis of two existing methods for describing the inelastic processes in symmetrical atom Rydberg-atom collisions.

【 授权许可】

Unknown