A three-center over-barrier model with screening for multiple ionization of rare gas dimers by slow highly charged ions

作者：Ohyama Yamaguchi Tomoko^*; Ichimura Atsushi

来源：Physica Scripta, 2011, T144: 014028.

DOI：10.1088/0031-8949/2011/T144/014028

We investigate the electron stereo-dynamics in the multiple ionization of rare gas dimers by slow highly charged ions in terms of a three-center over-barrier model. A screening factor is introduced in the model for effective ion-core charge of a non-active atomic site in the dimer, keeping that of an active site unscreened. It is found that the screening effect is crucial for populating ion pairs with charge difference more than one, such as (Q, Q') = (2, 0) and (3, 1). Understanding this is helpful in interpreting the result of a recent momentum imaging experiment.

• 出版日期2011-6