ISSN:
1434-6079
Keywords:
34.50.H
;
34.70.+
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Simultaneous multiple-electron capture and multiple ionization is studied for collisions of highly stripped ionsA q+ with rare gas atomsB=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 fromq=6 up toq=48. The coincident charge-state distributions of target recoil ionsB i+ range fromi=1 up toi=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 ofk electrons (k=−2, −1, 0, 1, 2, 3, 4) from/into the projectile ion were determined. Their systematic dependences onk, 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01384992
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