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Phys. Rev. A 54, R1765–R1768 (1996)

Energetic electrons in strong-field ionization

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H. R. Reiss
Physics Department, The American University, Washington, D.C. 20016-8058 and Institute for Theoretical Atomic and Molecular Physics, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138

Received 15 May 1996; published in the issue dated September 1996

A strong-field theory is extended to the description of energetic photoelectron spectra. Experimental spectra are accurately described for both linear and circular polarizations, subject only to a single adjustment of reported peak laser intensities. Examined are single and (sequential) double ionization of helium, to energies of about 1 keV. An approximation of the spectrum as a Maxwellian distribution yields a temperature dependent on the spectrometer viewing angle. Final-state Coulomb effects in circular polarization are examined.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.54.R1765
DOI:
10.1103/PhysRevA.54.R1765
PACS:
32.80.Rm, 32.80.Fb, 42.50.Hz