Laser stripping of hydrogen atoms by direct ionization

Brunetti, E and Becker, W and Bryant, H C and Jaroszynski, D A and Chou, W (2015) Laser stripping of hydrogen atoms by direct ionization. New Journal of Physics, 17. 053008. ISSN 1367-2630

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    Direct ionization of hydrogen atoms by laser irradiation is investigated as a potential new scheme to generate proton beams without stripping foils. The time-dependent Schrödinger equation describing the atom-radiation interaction is numerically solved obtaining accurate ionization cross-sections for a broad range of laser wavelengths, durations and energies. Parameters are identified where the Doppler frequency up-shift of radiation colliding with relativistic particles can lead to efficient ionization over large volumes and broad bandwidths using currently available lasers.