Micron-scale fast electron filaments and recirculation determined from rear-side optical emission in high-intensity laser-solid interactions

C. Bellei, S. R. Nagel, S. Kar, A. Henig, S. Kneip, C. Palmer, A. Saevert, L. Willingale, D. Carroll, B. Dromey, J. S. Green, K. Markey, P. Simpson, R. J. Clarke, H. Lowe, D. Neely, C. Spindloe, M. Tolley, M. C. Kaluza, S. P. D. Mangles & 7 others P. McKenna, P. A. Norreys, J. Schreiber, M. Zepf, J. R. Davies, K. Krushelnick, Z. Najmudin

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The transport of relativistic electrons generated in the interaction of petawatt class lasers with solid targets has been studied through measurements of the second harmonic optical emission from their rear surface. The high degree of polarization of the emission indicates that it is predominantly optical transition radiation (TR). A halo that surrounds the main region of emission is also polarized and is attributed to the effect of electron recirculation. The variation of the polarization state and intensity of radiation with the angle of observation indicates that the emission of TR is highly directional and provides evidence for the presence of mu m-size filaments. A brief discussion on the possible causes of such a fine electron beam structure is given.

LanguageEnglish
Article number073016
Number of pages12
JournalNew Journal of Physics
Volume12
DOIs
Publication statusPublished - 21 Jul 2010

Fingerprint

high power lasers
light emission
filaments
radiation
electrons
interactions
polarization
optical transition
halos
electron beams
harmonics
causes
lasers

Keywords

  • generated fast electrons
  • transition radiation
  • fast-igniter
  • targets
  • plasma
  • transport
  • pulses

Cite this

Bellei, C. ; Nagel, S. R. ; Kar, S. ; Henig, A. ; Kneip, S. ; Palmer, C. ; Saevert, A. ; Willingale, L. ; Carroll, D. ; Dromey, B. ; Green, J. S. ; Markey, K. ; Simpson, P. ; Clarke, R. J. ; Lowe, H. ; Neely, D. ; Spindloe, C. ; Tolley, M. ; Kaluza, M. C. ; Mangles, S. P. D. ; McKenna, P. ; Norreys, P. A. ; Schreiber, J. ; Zepf, M. ; Davies, J. R. ; Krushelnick, K. ; Najmudin, Z. / Micron-scale fast electron filaments and recirculation determined from rear-side optical emission in high-intensity laser-solid interactions. In: New Journal of Physics. 2010 ; Vol. 12.
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title = "Micron-scale fast electron filaments and recirculation determined from rear-side optical emission in high-intensity laser-solid interactions",
abstract = "The transport of relativistic electrons generated in the interaction of petawatt class lasers with solid targets has been studied through measurements of the second harmonic optical emission from their rear surface. The high degree of polarization of the emission indicates that it is predominantly optical transition radiation (TR). A halo that surrounds the main region of emission is also polarized and is attributed to the effect of electron recirculation. The variation of the polarization state and intensity of radiation with the angle of observation indicates that the emission of TR is highly directional and provides evidence for the presence of mu m-size filaments. A brief discussion on the possible causes of such a fine electron beam structure is given.",
keywords = "generated fast electrons, transition radiation, fast-igniter, targets, plasma, transport, pulses",
author = "C. Bellei and Nagel, {S. R.} and S. Kar and A. Henig and S. Kneip and C. Palmer and A. Saevert and L. Willingale and D. Carroll and B. Dromey and Green, {J. S.} and K. Markey and P. Simpson and Clarke, {R. J.} and H. Lowe and D. Neely and C. Spindloe and M. Tolley and Kaluza, {M. C.} and Mangles, {S. P. D.} and P. McKenna and Norreys, {P. A.} and J. Schreiber and M. Zepf and Davies, {J. R.} and K. Krushelnick and Z. Najmudin",
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Bellei, C, Nagel, SR, Kar, S, Henig, A, Kneip, S, Palmer, C, Saevert, A, Willingale, L, Carroll, D, Dromey, B, Green, JS, Markey, K, Simpson, P, Clarke, RJ, Lowe, H, Neely, D, Spindloe, C, Tolley, M, Kaluza, MC, Mangles, SPD, McKenna, P, Norreys, PA, Schreiber, J, Zepf, M, Davies, JR, Krushelnick, K & Najmudin, Z 2010, 'Micron-scale fast electron filaments and recirculation determined from rear-side optical emission in high-intensity laser-solid interactions' New Journal of Physics, vol. 12, 073016. https://doi.org/10.1088/1367-2630/12/7/073016

Micron-scale fast electron filaments and recirculation determined from rear-side optical emission in high-intensity laser-solid interactions. / Bellei, C.; Nagel, S. R.; Kar, S.; Henig, A.; Kneip, S.; Palmer, C.; Saevert, A.; Willingale, L.; Carroll, D.; Dromey, B.; Green, J. S.; Markey, K.; Simpson, P.; Clarke, R. J.; Lowe, H.; Neely, D.; Spindloe, C.; Tolley, M.; Kaluza, M. C.; Mangles, S. P. D.; McKenna, P.; Norreys, P. A.; Schreiber, J.; Zepf, M.; Davies, J. R.; Krushelnick, K.; Najmudin, Z.

In: New Journal of Physics, Vol. 12, 073016, 21.07.2010.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Micron-scale fast electron filaments and recirculation determined from rear-side optical emission in high-intensity laser-solid interactions

AU - Bellei, C.

AU - Nagel, S. R.

AU - Kar, S.

AU - Henig, A.

AU - Kneip, S.

AU - Palmer, C.

AU - Saevert, A.

AU - Willingale, L.

AU - Carroll, D.

AU - Dromey, B.

AU - Green, J. S.

AU - Markey, K.

AU - Simpson, P.

AU - Clarke, R. J.

AU - Lowe, H.

AU - Neely, D.

AU - Spindloe, C.

AU - Tolley, M.

AU - Kaluza, M. C.

AU - Mangles, S. P. D.

AU - McKenna, P.

AU - Norreys, P. A.

AU - Schreiber, J.

AU - Zepf, M.

AU - Davies, J. R.

AU - Krushelnick, K.

AU - Najmudin, Z.

PY - 2010/7/21

Y1 - 2010/7/21

N2 - The transport of relativistic electrons generated in the interaction of petawatt class lasers with solid targets has been studied through measurements of the second harmonic optical emission from their rear surface. The high degree of polarization of the emission indicates that it is predominantly optical transition radiation (TR). A halo that surrounds the main region of emission is also polarized and is attributed to the effect of electron recirculation. The variation of the polarization state and intensity of radiation with the angle of observation indicates that the emission of TR is highly directional and provides evidence for the presence of mu m-size filaments. A brief discussion on the possible causes of such a fine electron beam structure is given.

AB - The transport of relativistic electrons generated in the interaction of petawatt class lasers with solid targets has been studied through measurements of the second harmonic optical emission from their rear surface. The high degree of polarization of the emission indicates that it is predominantly optical transition radiation (TR). A halo that surrounds the main region of emission is also polarized and is attributed to the effect of electron recirculation. The variation of the polarization state and intensity of radiation with the angle of observation indicates that the emission of TR is highly directional and provides evidence for the presence of mu m-size filaments. A brief discussion on the possible causes of such a fine electron beam structure is given.

KW - generated fast electrons

KW - transition radiation

KW - fast-igniter

KW - targets

KW - plasma

KW - transport

KW - pulses

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U2 - 10.1088/1367-2630/12/7/073016

DO - 10.1088/1367-2630/12/7/073016

M3 - Article

VL - 12

JO - New Journal of Physics

T2 - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 073016

ER -