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Charge Transfer Data Needs for Cometary X-ray Emission Modeling.
- Source :
-
AIP Conference Proceedings . 2002, Vol. 636 Issue 1, p144. 10p. - Publication Year :
- 2002
-
Abstract
- The emission of x-rays has been observed from nearly twenty comets and evidence exists that it is the result of radiative decays from highly-excited, highly-charged solar wind ions following charge exchange with neutral species, mostly water, in the cometary atmosphere. We review the progress to date in constructing models of the x-ray emission. However, the construction of accurate models is impeded by the near tack of reliable state-selective charge exchange cross section data for the relevant neutral species (H[sub 2]O, CO, CO[sub 2], etc.). The progress, and difficulties, of theoretical studies for the relevant collision processes is discussed with a particular focus on the breakdown of approximations made in the emission models. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CHARGE transfer
*COMETS
Subjects
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 636
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 7532335