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Interaction of superintense laser pulses with relativistic ions.

Chirilă, C. C. and Joachain, C. J. and Kylstra, N. J. and Potvliege, R. M. (2004) 'Interaction of superintense laser pulses with relativistic ions.', Physical review letters., 93 (24). p. 243603.


At high intensities, three-step recollision processes driven by low frequency laser pulses, such as high-order harmonic generation and high-order above-threshold ionization, are normally severely suppressed by the magnetic-field component of the laser field. It is shown that this suppression is not severe, even for ponderomotive energies well above 10keV, for multicharged ions moving at a sufficiently high relativistic velocity against a counterpropagating infrared laser pulse. Numerical results are presented for high-order harmonic emission by a single Ne9+ ion moving with a Lorentz factor gamma=15 against a Nd:glass laser beam. The calculations are done within a Coulomb-corrected nondipole strong field approximation. The approximation is tested by comparing with accurate results.

Item Type:Article
Keywords:Above-threshold ionization, Dipole approxmation, Photo-emission, Coulomb.
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Publisher statement:© 2004 by The American Physical Society. All rights reserved.
Date accepted:No date available
Date deposited:13 September 2010
Date of first online publication:December 2004
Date first made open access:No date available

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