Li, SM (reprint author), Chinese Ctr Adv Sci & Technol, World Lab, POB 8730, Beijing 100080, Peoples R China.
In the first Born approximation, the dressing modification in laser-assisted charge exchange collision is investigated. The cross sections for electron capture by a proton from dressed atomic hydrogen and dressed helium targets are calculated within a wide energy range. Theoretical results show that with impact energy increasing, the dressing effect leads to increasingly significant cross-section modifications. The modified capture cross sections are increasing functions of the ratio of laser strength to frequency.