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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 17 — Aug. 23, 2004
  • pp: 3911–3920

Electron momentum states and bremsstrahlung radiation from the ultraintense field ionization of atoms

Enam A. Chowdhury, Isaac Ghebregziabher, James MacDonald, and Barry C. Walker  »View Author Affiliations

Optics Express, Vol. 12, Issue 17, pp. 3911-3920 (2004)

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Relativistic continuum dynamics for electrons from the ionization of atoms in an ultraintense (1017 W/cm2 to 1020 W/cm2) laser focus are analyzed using a semi-classical wavelet model. The results quantify the energy and angle resolved photoionization yields due to the developing relativistic dynamics in ultraintense fields. Using the final state momentum, the bremsstrahlung radiation yield is calculated and shows a linear relationship between the radiation cutoff and the laser intensity. At 1020 W/cm2 photons with energies out to 10MeV should be observed. The results are quantitatively comparable to the observed angle resolved photoelectron spectra of current ultraintense laser-atom experiments. The results show the azimuthal angular distributions becoming more isotropic with increasing intensity.

© 2004 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(020.4180) Atomic and molecular physics : Multiphoton processes

ToC Category:
Research Papers

Original Manuscript: July 6, 2004
Revised Manuscript: August 4, 2004
Published: August 23, 2004

Enam Chowdhury, Isaac Ghebregziabher, James MacDonald, and Barry Walker, "Electron momentum states and bremsstrahlung radiation from the ultraintense field ionization of atoms," Opt. Express 12, 3911-3920 (2004)

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