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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 3 — Jan. 30, 2012
  • pp: 2310–2318

Nonequilibrium evolution of strong-field anisotropic ionized electrons towards a delayed plasma-state

B. Pasenow, J. V. Moloney, S. W. Koch, S. H. Chen, A. Becker, and A. Jaroń-Becker  »View Author Affiliations


Optics Express, Vol. 20, Issue 3, pp. 2310-2318 (2012)
http://dx.doi.org/10.1364/OE.20.002310


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Abstract

Rigorous quantum calculations of the femtosecond ionization of hydrogen atoms in air lead to highly anisotropic electron and ion angular (momentum) distributions. A quantum Monte-Carlo analysis of the subsequent many-body dynamics reveals two distinct relaxation steps, first to a nearly isotropic hot nonequilibrium and then to a quasi-equilibrium configuration. The collective isotropic plasma state is reached on a picosecond timescale well after the ultrashort ionizing pulse has passed.

© 2012 OSA

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(260.5210) Physical optics : Photoionization
(320.0320) Ultrafast optics : Ultrafast optics
(350.5400) Other areas of optics : Plasmas

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: November 3, 2011
Revised Manuscript: December 20, 2011
Manuscript Accepted: December 23, 2011
Published: January 18, 2012

Citation
B. Pasenow, J. V. Moloney, S. W. Koch, S. H. Chen, A. Becker, and A. Jaroń-Becker, "Nonequilibrium evolution of strong-field anisotropic ionized electrons towards a delayed plasma-state," Opt. Express 20, 2310-2318 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-3-2310


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