Resonant charge transfer in He2+ + He+ collisions

Melchert, F.; Huber, Klaus; Krüdener, S.; Schulze, R.; Meuser, S.; Pfaff, Sebastian; Petri, Stefan; Benner, M.; Salzborn, E.

doi:10.1063/1.43651

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2001

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“…Experimental data for symmetric charge exchange between ions exist only for He 2+ on He + . Because of its simplicity and fundamental nature, this collision system has drawn much attention in both theory (Bates and Boyd 1962, Dickinson and Hardie 1979, Falcon 1983, Forster et al 1988, Bardsley et al 1989, Tharamel et al 1994 and experiment (Melchert et al 1992, Peart and Dolder 1979, Jognaux et al 1978. The single-charge-exchange cross sections for He 2+ -He + collisions from different theoretical calculations are found to be in good agreement with each other, but they were in disagreement with early measurements.…”

Section: Introductionmentioning

confidence: 93%

Studies of charge exchange in symmetric ion-ion collisions

Chen¹,

Cocke

Giese³

et al. 2001

J. Phys. B: At. Mol. Opt. Phys.

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We have measured the total cross sections for single charge exchange in He 2+-He + , Ne 2+-Ne + and Ar 2+-Ar + collisions at centre-of-mass energies of 1.8-14.8, 1.8-10.8 and 2.8-7.3 keV, respectively, using an intersecting beam technique. The results for He 2+-He + collisions are compared with existing measurements and calculations. For Ne 2+-Ne + and Ar 2+-Ar + the measured cross sections are compared with results from new close-coupling calculations based on a one-electron model potential description of the collision system.

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