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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 6 — Jun. 1, 2006
  • pp: 1190–1195

Ion acceleration in laser-excited plasma wake fields

F. Yan, Z. M. Sheng, Q. L. Dong, J. Zhang, and W. Yu  »View Author Affiliations


JOSA B, Vol. 23, Issue 6, pp. 1190-1195 (2006)
http://dx.doi.org/10.1364/JOSAB.23.001190


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Abstract

The dynamics of the plasma ions in the wake fields of short, ultraintense laser pulses in underdense plasmas are investigated analytically and numerically. Owing to the large ion-to-electron mass ratio, the motion of plasma ions in such wake fields has often been assumed to be neglectable. It is shown that when the laser intensity exceeds 10 20 W cm 2 , the ion motion can no longer be ignored. In this case, ion momentum peaks appear behind the laser pulse, which correspond with the ion density peaks. The laser-excited wake field appears to be effective for ion acceleration, in particular to ions with high-charge numbers. The dependence of ion acceleration on the laser intensity, pulse width, and background plasma density is discussed.

© 2006 Optical Society of America

OCIS Codes
(260.2160) Physical optics : Energy transfer
(350.5400) Other areas of optics : Plasmas
(350.5500) Other areas of optics : Propagation

ToC Category:
Other Areas of Optics

History
Original Manuscript: June 22, 2005
Revised Manuscript: November 15, 2005
Manuscript Accepted: December 16, 2005

Citation
F. Yan, Z. M. Sheng, Q. L. Dong, J. Zhang, and W. Yu, "Ion acceleration in laser-excited plasma wake fields," J. Opt. Soc. Am. B 23, 1190-1195 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-6-1190

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