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; P. McKenna; P. A. Norreys; J. Schreiber; M. 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, 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. ManglesP. McKenna, P. A. Norreys, J. Schreiber, M. 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
Number of pages	12
Journal	New Journal of Physics
Volume	12
DOIs	https://doi.org/10.1088/1367-2630/12/7/073016
Publication status	Published - 21 Jul 2010

Keywords

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

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10.1088/1367-2630/12/7/073016Licence: CC BY-NC-SA 3.0

Bellei-etal-NJP-2010-Micron-scale-fast-electron-filaments-and-recirculationFinal published version, 0.99 MBLicence: CC BY-NC-SA 3.0

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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., ... 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.",

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",

year = "2010",

month = jul,

day = "21",

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

language = "English",

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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

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

UR - http://www.scopus.com/inward/record.url?scp=77955327662&partnerID=8YFLogxK

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

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Keywords

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

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KEY PHYSICS FOR INERTIAL CONFINEMENT DIAGNOSED BY ION EMISSION

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