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Interaction of ultra-intense laser pulses with relativistic ions

Published online by Cambridge University Press:  01 July 2004

C.C. CHIRILĂ
Affiliation:
Department of Physics, University of Durham, Durham, UK
C.J. JOACHAIN
Affiliation:
Physique Théorique, Université Libre de Bruxelles, Belgium
N.J. KYLSTRA
Affiliation:
Department of Physics, University of Durham, Durham, UK Physique Théorique, Université Libre de Bruxelles, Belgium
R.M. POTVLIEGE
Affiliation:
Department of Physics, University of Durham, Durham, UK

Abstract

At high laser intensities, three step recollision processes such as high order harmonic generation and high-order ATI, are normally severely suppressed due to the magnetic field component of the laser pulse. However, if the laser pulse and relativistic ion beam are directed against each other, a significant increase in the frequency and the intensity of the pulse in the rest frame of the ions can occur. By performing calculations based on a Coulomb-corrected nondipole strong field approximation, we have shown that there is a range of intensities, Lorentz factors, and ion charges for which the suppression of the three step recollision processes is not severe, even for ponderomotive energies exceeding 10 keV. As an example, we consider parameters relevant to the accelerator that will be built at GSI-Darmstadt, capable of accelerating multicharged ions to Lorentz factors reaching 30.

Type
Research Article
Copyright
© 2004 Cambridge University Press

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References

REFERENCES

Chirilă, C.C., Klystra, N.J., Potvliege, R.M. & Joachain, C.J. (2002). Nondipole effects in photon emission by laser-driven ions. Phys. Rev. A 66, 063411.Google Scholar
Dammasch, M., Dörr, M., Eichmann, U. et al. (2001). Relativistic laser-field-drift Suppression of nonsequential multiple ionization. Phyd. Rev. A 64, 061402(R).
Garland, L.W., Jaroń, A., Kamiński, J.Z. & Potvliege, R.M. (2002). Off-shell effects in laser-assisted electron scattering at low frequency. J. Phys. B 35, 28612872.Google Scholar
Ivanov, M.Y., Brabec, T. & Burnett, N. (1996). Coulomb corrections and polarization effects in high-intensity high-harmonic emission. Phys. Rev. A 54, 742745.Google Scholar
Krainov, V.P. (1997). Ionization rates and energy and angular distributions at the barrier-suppression ionization of complex atoms and atomic ions. J. Phys. B 14, 425431.Google Scholar
Klystra, N.J., Potvliege, R.M. & Joachain, C.J. (2001). Photon emission by ions interacting with short intense laser pulses: Beyond the dipole approximation. J. Phys. B 34, L55L61.Google Scholar
Milošević, D.B. & Ehlotzky, F. (1998). Coulomb and rescattering effects in above-threshold ionization. Phys. Rev. A 58, 31243127.Google Scholar
Milošević, D.B., Hu, S.X. & Becher, W. (2001). Quantum-mechanical model for ultrahigh-order harmonic generation in the moderately relativistic regime. Phys. Rev. A 64, 011403(R).
Potvliege, R.M., Kylstra, N.J. & Joachain, C.J. (2000). Photon emission by He+ in intense ultrashort laser pulses. J. Phys. B. 33, L743L748.Google Scholar
Walser, M.W., Keitel, C.H., Scrinzi, A. & Brabec, T. (2000). High harmonic generation beyond the electric dipole approximation. Phys. Rev. Lett. 85, 50825085.Google Scholar
Worthington, R.A. & Potliege, R.M. (2002). unpublished.