Observations of the filamentation of high-intensity laser-produced electron beams

M. S. Wei; F. N. Beg; E. L. Clark; A. E. Dangor; R. G. Evans; A. Gopal; K. W.D. Ledingham; P. McKenna; P. A. Norreys; M. Tatarakis; M. Zepf; K. Krushelnick

doi:10.1103/PhysRevE.70.056412

Observations of the filamentation of high-intensity laser-produced electron beams

M. S. Wei^*
, F. N. Beg
, E. L. Clark
, A. E. Dangor
, R. G. Evans
, A. Gopal
, K. W.D. Ledingham
, P. McKenna
, P. A. Norreys
, M. Tatarakis
, M. Zepf
, K. Krushelnick

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

66 Citations (Scopus)

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Abstract

The structure of the hot electron beams emitted in laser-solid target interactions was analyzed. It was observed that electron beams were emitted from the rear of thin solid targets irradiated by a high-intensity short-pulse laser. It was shown that the most important condition in which electron beam filamentation due to Weibel-like instabilities become a factor were situations where large regions of low-density plasma exist. The results suggest that Weibel-like instabilities might not be important for the fast-ignitor scheme.

Original language	English
Article number	056412
Number of pages	6
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	70
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevE.70.056412
Publication status	Published - 1 Nov 2004

Funding

NUFUAU 0029-5515 10.1088/0029-5515/43/5/309 43 , 362 ( 2003 ). The authors acknowledge the assistance of the staff of the Central Laser Facility of the Rutherford Appleton Laboratory in the execution of this work as well as the support of the UK Engineering and Physical Sciences Research Council (EPSRC). We gratefully acknowledge the OSIRIS consortium which consists of UCLA/IST(Portugal)/USC for the use of OSIRIS. M.S.W. is partially supported by the Overseas Research Students Awards Scheme, Universities UK.

Keywords

filamented electron beams
laser-generated beam
high-intensity laser

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10.1103/PhysRevE.70.056412

Wei-etal-PRE2014-Observations-filamentation-high-intensity-laser-produced-electron-beamsFinal published version, 585 KB

Cite this

Wei, M. S., Beg, F. N., Clark, E. L., Dangor, A. E., Evans, R. G., Gopal, A., Ledingham, K. W. D., McKenna, P., Norreys, P. A., Tatarakis, M., Zepf, M., & Krushelnick, K. (2004). Observations of the filamentation of high-intensity laser-produced electron beams. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 70(5), Article 056412. https://doi.org/10.1103/PhysRevE.70.056412

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abstract = "The structure of the hot electron beams emitted in laser-solid target interactions was analyzed. It was observed that electron beams were emitted from the rear of thin solid targets irradiated by a high-intensity short-pulse laser. It was shown that the most important condition in which electron beam filamentation due to Weibel-like instabilities become a factor were situations where large regions of low-density plasma exist. The results suggest that Weibel-like instabilities might not be important for the fast-ignitor scheme.",

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AU - Beg, F. N.

AU - Clark, E. L.

AU - Dangor, A. E.

AU - Evans, R. G.

AU - Gopal, A.

AU - Ledingham, K. W.D.

AU - McKenna, P.

AU - Norreys, P. A.

AU - Tatarakis, M.

AU - Zepf, M.

AU - Krushelnick, K.

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AB - The structure of the hot electron beams emitted in laser-solid target interactions was analyzed. It was observed that electron beams were emitted from the rear of thin solid targets irradiated by a high-intensity short-pulse laser. It was shown that the most important condition in which electron beam filamentation due to Weibel-like instabilities become a factor were situations where large regions of low-density plasma exist. The results suggest that Weibel-like instabilities might not be important for the fast-ignitor scheme.

KW - filamented electron beams

KW - laser-generated beam

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Observations of the filamentation of high-intensity laser-produced electron beams

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