Evidence of locally enhanced target heating due to instabilities of counter-streaming fast electron beams

Petra Koester; Nicola Booth; Carlo A. Cecchetti; Hui Chen; Roger G.  Evans; Gianluca Gregori; Luca Labate; Tadzio Levato; Bin Li; Mikako Makita; James Mithen; Christopher D. Murphy; Margaret Notley; Rajeev Pattathil; David Riley; Nigel Woolsey; Leonida A. Gizzi

doi:10.1063/1.4907195

Evidence of locally enhanced target heating due to instabilities of counter-streaming fast electron beams

Petra Koester^*, Nicola Booth, Carlo A. Cecchetti, Hui Chen, Roger G. Evans, Gianluca Gregori, Luca Labate, Tadzio Levato, Bin Li, Mikako Makita, James Mithen, Christopher D. Murphy, Margaret Notley, Rajeev Pattathil, David Riley, Nigel Woolsey, Leonida A. Gizzi

^*Corresponding author for this work

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

The high-current fast electron beams generated in high-intensity laser-solid interactions require the onset of a balancing return current in order to propagate in the target material. Such a system of counter-streaming electron currents is unstable to a variety of instabilities such as the current-filamentation instability and the two-stream instability. An experimental study aimed at investigating the role of instabilities in a system of symmetrical counter-propagating fast electron beams is presented here for the first time. The fast electron beams are generated by double-sided laser-irradiation of a layered target foil at laser intensities above 10(19) W/cm(2). High-resolution X-ray spectroscopy of the emission from the central Ti layer shows that locally enhanced energy deposition is indeed achieved in the case of counter-propagating fast electron beams

Original language	English
Article number	020701
Number of pages	6
Journal	Physics of Plasmas
Volume	22
Issue number	2
DOIs	https://doi.org/10.1063/1.4907195
Publication status	Published - Feb 2015

Keywords

PLASMA
GENERATION
SIMULATION
TRANSPORT
DRIVEN

Access to Document

10.1063/1.4907195

Cite this

Koester, P., Booth, N., Cecchetti, C. A., Chen, H., Evans, R. G., Gregori, G., Labate, L., Levato, T., Li, B., Makita, M., Mithen, J., Murphy, C. D., Notley, M., Pattathil, R., Riley, D., Woolsey, N., & Gizzi, L. A. (2015). Evidence of locally enhanced target heating due to instabilities of counter-streaming fast electron beams. Physics of Plasmas, 22(2), [020701]. https://doi.org/10.1063/1.4907195

Koester, Petra ; Booth, Nicola ; Cecchetti, Carlo A. ; Chen, Hui ; Evans, Roger G. ; Gregori, Gianluca ; Labate, Luca ; Levato, Tadzio ; Li, Bin ; Makita, Mikako ; Mithen, James ; Murphy, Christopher D. ; Notley, Margaret ; Pattathil, Rajeev ; Riley, David ; Woolsey, Nigel ; Gizzi, Leonida A. / Evidence of locally enhanced target heating due to instabilities of counter-streaming fast electron beams. In: Physics of Plasmas. 2015 ; Vol. 22, No. 2.

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title = "Evidence of locally enhanced target heating due to instabilities of counter-streaming fast electron beams",

abstract = "The high-current fast electron beams generated in high-intensity laser-solid interactions require the onset of a balancing return current in order to propagate in the target material. Such a system of counter-streaming electron currents is unstable to a variety of instabilities such as the current-filamentation instability and the two-stream instability. An experimental study aimed at investigating the role of instabilities in a system of symmetrical counter-propagating fast electron beams is presented here for the first time. The fast electron beams are generated by double-sided laser-irradiation of a layered target foil at laser intensities above 10(19) W/cm(2). High-resolution X-ray spectroscopy of the emission from the central Ti layer shows that locally enhanced energy deposition is indeed achieved in the case of counter-propagating fast electron beams",

keywords = "PLASMA, GENERATION, SIMULATION, TRANSPORT, DRIVEN",

author = "Petra Koester and Nicola Booth and Cecchetti, {Carlo A.} and Hui Chen and Evans, {Roger G.} and Gianluca Gregori and Luca Labate and Tadzio Levato and Bin Li and Mikako Makita and James Mithen and Murphy, {Christopher D.} and Margaret Notley and Rajeev Pattathil and David Riley and Nigel Woolsey and Gizzi, {Leonida A.}",

year = "2015",

month = feb,

doi = "10.1063/1.4907195",

language = "English",

volume = "22",

journal = "Physics of Plasmas",

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Koester, P, Booth, N, Cecchetti, CA, Chen, H, Evans, RG, Gregori, G, Labate, L, Levato, T, Li, B, Makita, M, Mithen, J, Murphy, CD, Notley, M, Pattathil, R, Riley, D, Woolsey, N & Gizzi, LA 2015, 'Evidence of locally enhanced target heating due to instabilities of counter-streaming fast electron beams', Physics of Plasmas, vol. 22, no. 2, 020701. https://doi.org/10.1063/1.4907195

Evidence of locally enhanced target heating due to instabilities of counter-streaming fast electron beams. / Koester, Petra; Booth, Nicola; Cecchetti, Carlo A.; Chen, Hui; Evans, Roger G. ; Gregori, Gianluca; Labate, Luca; Levato, Tadzio; Li, Bin; Makita, Mikako; Mithen, James; Murphy, Christopher D.; Notley, Margaret; Pattathil, Rajeev; Riley, David; Woolsey, Nigel; Gizzi, Leonida A.

In: Physics of Plasmas, Vol. 22, No. 2, 020701, 02.2015.

Research output: Contribution to journal › Article

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AU - Koester, Petra

AU - Booth, Nicola

AU - Cecchetti, Carlo A.

AU - Chen, Hui

AU - Evans, Roger G.

AU - Gregori, Gianluca

AU - Labate, Luca

AU - Levato, Tadzio

AU - Li, Bin

AU - Makita, Mikako

AU - Mithen, James

AU - Murphy, Christopher D.

AU - Notley, Margaret

AU - Pattathil, Rajeev

AU - Riley, David

AU - Woolsey, Nigel

AU - Gizzi, Leonida A.

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AB - The high-current fast electron beams generated in high-intensity laser-solid interactions require the onset of a balancing return current in order to propagate in the target material. Such a system of counter-streaming electron currents is unstable to a variety of instabilities such as the current-filamentation instability and the two-stream instability. An experimental study aimed at investigating the role of instabilities in a system of symmetrical counter-propagating fast electron beams is presented here for the first time. The fast electron beams are generated by double-sided laser-irradiation of a layered target foil at laser intensities above 10(19) W/cm(2). High-resolution X-ray spectroscopy of the emission from the central Ti layer shows that locally enhanced energy deposition is indeed achieved in the case of counter-propagating fast electron beams

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KW - SIMULATION

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