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Journal Article

Charge-transfer processes in collisions of He2+ ions with H2, N2, O2, CO, and CO2 molecules below 4 keV/u

MPS-Authors
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Tawara,  H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

Kusakabe, T., Miyamoto, Y., Kimura, M., & Tawara, H. (2006). Charge-transfer processes in collisions of He2+ ions with H2, N2, O2, CO, and CO2 molecules below 4 keV/u. Physical Review A, 73(2): 022706, pp. 1-9. doi:10.110.1103/PhysRevA.73.022706.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-80B0-3
Abstract
Single- and double-charge-transfer cross sections of 3He2+ ions in collisions with N2, O2, CO, and CO2 molecules have been measured in the energy range of 0.20 to 2.7 keV/u. In addition, the same type of measurements for H2 molecules has been also carried out again for energies in the range from 0.13 to 0.40 keV/u. For all molecules except for CO2, the present single-charge-transfer cross sections are found to be generally larger than, or at least comparable to, double-charge-transfer cross sections in the energy region studied. This is a marked difference in comparison to experimental results reported earlier where a sharp increase for double charge transfer was observed below 0.3 keV/u. The double-charge-transfer cross sections are found to be apparently larger than single-charge-transfer cross sections only for CO2 molecules at energies below 0.8 keV/u. A theoretical analysis based on a close-coupling method within a molecular representation has also been carried out for H2 and CO targets to provide some insights.