| Numéro |
J. Phys. Colloques
Volume 50, Numéro C1, Janvier 1989
International Conference on the Physics of Multiply Charged Ions and International Workshop on E.C.R. Ion Sources
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| Page(s) | C1-321 - C1-327 | |
| DOI | https://doi.org/10.1051/jphyscol:1989135 | |
J. Phys. Colloques 50 (1989) C1-321-C1-327
DOI: 10.1051/jphyscol:1989135
SLOW COLLISIONS OF O6+ WITH He AND H2 STUDIED IN ULTRA-SOFT X-RAY EMISSION
J. -E. RUBENSSON1, J. NORDGREN1, A. BÁRÁNY2, M.G. SURAUD3, S. BLIMAN3, D. HITZ3 and E. J. KNYSTAUTAS41 Department of Physics, Uppsala University, Box 530, s-751 21 Uppsala, Sweden
2 Manne Siegbahn Institute of Physics, S-104 05 Stockholm, Sweden
3 Agrippa, GIS CEA/CNRS, F-38041 Grenoble, France
4 Département de Physique, Université Laval, Québec, G1K 4P4, Canada
Abstract
Photon emission in the 100-200Å region following slow O6+ + He, H2 collisions has been analyzed using a new grazing incidence spectrometer. The ions were produced in an ECR type ion source, accelerated to 60 keV, and passed through a target gas cell. Intensity from decay associated with single electron transfert to nl levels is seen, and is used to deduce the relative nl subshell selective capture cross sections. Many lines corresponding to double electron transfer are detected, and discussed in terms of different transfer mechanisms. Several lines are interpreted as due to correlated double capture. We also attribute intensity to the decay of quartet states, formed on metastable 1s2s3S oxygen ion states by one-electron capture. About half of the quartet lines give evidence of non-core-conserving electron transfer.