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Forbidden transitions in excitation by proton impact in Li-like Al ions

  • V. Stancalie (a1), V. Pais (a1), M. Totolici (a1) (a2) and A. Mihailescu (a1)
Abstract

This paper presents cross-sections and collision strengths for proton-impact excitation of optically forbidden transitions in Al10+. These data, calculated in the impact-parameter formalism, covering the expected range of energies/temperature in laser-produced plasmas, are believed to represent the first such detailed treatment of this system. The cross-sections decrease with energy as E−1, while the collision strengths tend to finite limits as the energy of colliding proton becomes infinitely great. This high-energy limiting value has been evaluated combining results from the semi-classical treatment of ion-impact excitation processes and the Born approximation for high-energy behavior of the collision strength. The effective target size has been estimated from the calculated high-energy limit of the collision strength in the Born approximation.

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Corresponding author
Address correspondence and reprint requests to: V. Stancalie, National Institute for Laser, Plasma and Radiation Physics, Laser Department, P.O. Box MG-36, Bucharest 077125 Romania. E-mail: viorica.stancalie@inflpr.ro
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Laser and Particle Beams
  • ISSN: 0263-0346
  • EISSN: 1469-803X
  • URL: /core/journals/laser-and-particle-beams
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