In this work we use the classical trajectory Monte Carlo method within an eight-electron scheme to theoretically study photonic spectra that follow charge-exchange processes between highly charged ions of charge states 10+, 17+, 18+, and 36+ with neutral argon. The energy range considered is 18 eV/amu to 4 keV/amu, covering typical electron beam ion traps and solar wind energies. The role played by multiple electron capture processes for the different collision systems under consideration is explicitly analyzed and its contribution separated as arising from radiative decay and autoionizing multiple capture. For the present collision systems we find that multiple electron capture is responsible for 50%-60% of the resulting x-ray spectra. The present results are of direct relevance to the astrophysical program.
S. Otranto et al., "X-Ray Emission Produced in Charge-Exchange Collisions between Highly Charged Ions and Argon: Role of the Multiple Electron Capture," Physical Review A - Atomic, Molecular, and Optical Physics, vol. 90, no. 6, American Physical Society (APS), Dec 2014.
The definitive version is available at https://doi.org/10.1103/PhysRevA.90.062708
Center for High Performance Computing Research
Keywords and Phrases
Charge Transfer; Ions; Monte Carlo Methods; Charge Exchanges; Charge-Exchange Collisions; Classical Trajectory Monte Carlo Methods; Collision Systems; Electron Beam Ion Traps; Highly Charged Ions; Multiple Electron Capture; Radiative Decay; Electrons
International Standard Serial Number (ISSN)
Article - Journal
© 2014 American Physical Society (APS), All rights reserved.
01 Dec 2014