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Author Moore, C. I. ♦ Ting, A. ♦ McNaught, S. J. ♦ Qiu, J. ♦ Burris, H. R. ♦ Sprangle, P.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ENGINEERING NOT INCLUDED IN OTHER CATEGORIES ♦ COLLECTIVE ACCELERATORS ♦ ACCELERATION ♦ ELECTRON BEAMS ♦ PLASMA ACCELERATION ♦ PONDEROMOTIVE FORCE ♦ LASER RADIATION ♦ PHOTOIONIZATION
Abstract A new laser-accelerator injector based on the high-energy electrons ejected from a laser focus following the ionization of high-charge states of gases has been investigated. This method can generate electron pulses with MeV energies and pulse widths substantially less than the laser pulse width using terawatt lasers. Experiments at intensities of 3{times}10{sup 18} W/cm {sup 2} show that two highly directional electron beams with energies up to 340thinspthinspkeV are produced in the laser polarization direction. These highly directional beams are inconsistent with simulation results using Ammosov-Delone-Krainov (ADK) tunneling theory to model the ionization process. It is shown that this is likely due to the release of electrons with larger canonical momentum than predicted by ADK theory. {copyright} {ital 1999} {ital The American Physical Society}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-02-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 82
Issue Number 8


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