| Autor: |
Müller, A., Schuch, B., Groh, W., Salzborn, E. |
| Zdroj: |
Zeitschrift für Physik D Atoms, Molecules & Clusters; 1987, Vol. 7 Issue 3, p251-260, 10p |
| Abstrakt: |
Simultaneous multiple-electron capture and multiple ionization is studied for collisions of highly stripped ions A with rare gas atoms B=He, Ne, Ar, Kr and Xe. At a specific energy of 1.4 MeV/u coincidence measurements were conducted distinguishing between pure ionization, stripping and capture of up to four electrons by projectiles in charge states from q=6 up to q=48. The coincident charge-state distributions of target recoil ions B range from i=1 up to i=19 (in few cases). For highly charged projectiles the relative fractions of recoil ions for concomitant electron capture and ionization are found to be nearly independent of projectile charge or species. Average charge states 〈 i〉 of the recoil ions produced by loss respectively capture of k electrons ( k=−2, −1, 0, 1, 2, 3, 4) from/into the projectile ion were determined. Their systematic dependences on k, on the target atomic number and the projectile ion charge are discussed. A calculation of partial cross sections for multi-electron collision processes in the He target atoms using unitarized first order perturbation theory for impact parameter dependent probabilities and an independent-electron picture is presented and discussed on the basis of the experimental data. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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