J A Perez et al 2001 J. Phys. B: At. Mol. Opt. Phys. 34 3063 doi:10.1088/0953-4075/34/15/312
J A Perez1, R E Olson1 and P Beiersdorfer2
Show affiliationsA three-body classical trajectory Monte Carlo method is used to study charge transfer between highly charged bare ions (Ne10+, Ar18+, Fe26+, Kr36+ and Xe54+) and neutral hydrogen at collision energies between 1 eV amu-1 and 100 keV amu-1. The x-ray emission resulting from these reactions can be used as a diagnostic tool to study the charge transfer processes occurring in plasmas. For low-energy collisions (<100 eV amu-1), the electrons are captured into states characterized by large principal quantum numbers and low angular momentum. A result of this non-statistical behaviour is the increase in Lyman series x-rays being emitted by captured electrons moving directly from high-n states to the K-shell. Calculated results for the enhancement of K-shell x-ray emission at low energies compare favourably with measurements made at the Lawrence Livermore National Laboratory using the electron beam ion traps EBIT-II and SuperEBIT.
82.30.Fi Ion-molecule, ion-ion, and charge-transfer reactions
78.70.En X-ray emission spectra and fluorescence
82.20.Fd Collision theories; trajectory models
82.20.Nk Classical theories of reactions and/or energy transfer
Issue 15 (14 August 2001)
Received 14 December 2000, in final form 26 April 2001
Published 23 July 2001
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