Abstract


In the present work, cross sections for single-electron-capture by low energy highly charged
neon ions from He have been measured. The slow highly charged neon ions of these measuremnts
were obtained from a recoil ion source [1-4] that uses the collision between a pulsed fast
fluorine beam from the tandem accelerator and the gas target. The measurements of single-electron-
capture by neon recoil ions incident on helium were obtained in the energy range 600-1000 eV/q
for Ne^q+ (q =2-6). The present measurements were compared with the experimental
results of Justiniano et. al. [5] and the predictions of the Absorbing Sphere Model [6]
and the Classical Model [7,8]. The present results are observed to be in a good agreement with
the published data of Justiniano et. al. [5] except for Ne²⁺ data a noticeable
disagreement has been observed. The present data for Neq+ (q =2-6) recoil ions incident on helium
at energy of 1000eV/q agree reasonably with the theoretical predictions of the Absorbing Sphere
Model [6] except for (q = 2). The present results are in disagreement with the predictions of
the Classical Model [7,8].
The information which will be provided by these experiments are of great help to test the
predictions of theoretical models. These results will also give us a better understanding
of the collision dynamics of electron capture process by highly charged slow projectiles from
one- or many-electron targets.

References