Dressing modification in the laser-assisted proton-helium charge exchange collision
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A first Born approach to intense laser modified proton-helium electron capture collision is given. Theoretical results show that the angular distribution peaks forward sharply. For a geometry of laser polarization vector parallel to the incident direction, the dressing effect on the differential cross section covers a relatively wide angular range; while for a perpendicular geometry, the result is modified only in a very small angular region. The integral cross sections get highly promoted by laser with the impact energy increasing. The modified cross sections are increasing functions of field strength, but decreasing functions of field frequency. Comparisons with the laser assisted electron capture from atomic hydrogen are made.
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