Double ionization of H- ions by electron impact in the solar atmosphere
- Title
- Double ionization of H- ions by electron impact in the solar atmosphere
- Author
- 정영대
- Keywords
- atomic processes; Sun : atmosphere
- Issue Date
- 2008-02
- Publisher
- IOP PUBLISHING LTD
- Citation
- ASTROPHYSICAL JOURNAL, v. 674, NO. 2, Page. 1207.0-1210.0
- Abstract
- The double ionization of H- ions by the generalized Lorentzian distribution of electrons in the solar atmosphere is investigated. The Born-Bethe formula for the multielectron ionization cross section is employed in order to obtain the double-ionization rate for H- as a function of the spectral index and thermal energy. It is shown that the double-ionization rates of H- are greater in non-Maxwellian plasmas than in Maxwellian plasmas in the low-temperature region. It is also shown that the nonthermal character of the solar plasma increases the double-ionization rates of H- in the solar photosphere and chromosphere. In addition, we found that the double-ionization rates of H- in the solar photosphere and chromosphere increase with increasing the plasma temperature. It is also shown that the high-energy corrections enhance the double-ionization rates in non-Maxwellian plasmas, and that the high-energy corrections on the double-ionization rate increase with increasing the plasma temperature.
- URI
- https://iopscience.iop.org/article/10.1086/526417https://repository.hanyang.ac.kr/handle/20.500.11754/182182
- ISSN
- 0004-637X;1538-4357
- DOI
- 10.1086/526417
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > APPLIED PHYSICS(응용물리학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML