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

C. Bellei; S.R. Nagel; Satyabrata Kar; A. Henig; S. Kneip; C. Palmer; A. Savert; L. Willingale; D. Carroll; Brendan Dromey; J.S. Green; K. Markey; P. Simpson; Rosemary Clarke; H. Lowe; D. Neely; C. Spindloe; M. Tolley; M.C. Kaluza; S.P.D. Mangles; P. McKenna; P.A. Norreys; J. Schreiber; Matthew Zepf; J.R. Davies; K. Krushelnick; Z. Najmudin

doi: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

C. Bellei, S.R. Nagel, Satyabrata Kar, A. Henig, S. Kneip, C. Palmer, A. Savert, L. Willingale, D. Carroll, Brendan Dromey, J.S. Green, K. Markey, P. Simpson, Rosemary Clarke, H. Lowe, D. Neely, C. Spindloe, M. Tolley, M.C. Kaluza, S.P.D. ManglesP. McKenna, P.A. Norreys, J. Schreiber, Matthew Zepf, J.R. Davies, K. Krushelnick, Z. Najmudin

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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.

Original language	English
Article number	073016
Journal	New Journal of Physics
Volume	12
DOIs	https://doi.org/10.1088/1367-2630/12/7/073016
Publication status	Published - 21 Jul 2010

ASJC Scopus subject areas

General Physics and Astronomy

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Bellei, C., Nagel, S. R., Kar, S., Henig, A., Kneip, S., Palmer, C., Savert, A., Willingale, L., Carroll, D., Dromey, B., Green, J. S., Markey, K., Simpson, P., Clarke, R., Lowe, H., Neely, D., Spindloe, C., Tolley, M., Kaluza, M. C., ... 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, 12, Article 073016. https://doi.org/10.1088/1367-2630/12/7/073016

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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.",

author = "C. Bellei and S.R. Nagel and Satyabrata Kar and A. Henig and S. Kneip and C. Palmer and A. Savert and L. Willingale and D. Carroll and Brendan Dromey and J.S. Green and K. Markey and P. Simpson and Rosemary Clarke and H. Lowe and D. Neely and C. Spindloe and M. Tolley and M.C. Kaluza and S.P.D. Mangles and P. McKenna and P.A. Norreys and J. Schreiber and Matthew Zepf and J.R. Davies and K. Krushelnick and Z. Najmudin",

year = "2010",

month = jul,

day = "21",

doi = "10.1088/1367-2630/12/7/073016",

language = "English",

volume = "12",

journal = "New Journal of Physics",

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Bellei, C, Nagel, SR, Kar, S, Henig, A, Kneip, S, Palmer, C, Savert, A, Willingale, L, Carroll, D, Dromey, B, Green, JS, Markey, K, Simpson, P, Clarke, R, 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

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, Satyabrata

AU - Henig, A.

AU - Kneip, S.

AU - Palmer, C.

AU - Savert, A.

AU - Willingale, L.

AU - Carroll, D.

AU - Dromey, Brendan

AU - Green, J.S.

AU - Markey, K.

AU - Simpson, P.

AU - Clarke, Rosemary

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, Matthew

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.

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

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

M3 - Article

SN - 1367-2630

VL - 12

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 073016

ER -

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

Abstract

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