Abstract

Cusp-electron emission via processes electron capture to the continuum (ECC) and transfer ionization (TI) has been investigated theoretically in 0.3–2 MeV/amu O8+on Ar collisions. Doubly differential cross-sections for ECC and TI were calculated by using the classical trajectory Monte Carlo method within the framework of the independent particle approximation. The TI/ECC cusp-intensity ratio was found to have a maximum at about 1 MeV/amu impact energy, in accordance with the previous experimental observation. The maximum is due to the increasing contribution of the L shell of argon to the cusp-electron production with increasing collision velocity.

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