Divergence of laser-generated hot electrons generated in a cone geometry

R. B. Stephens; K. U. Akli; T. Bartal; F. N. Beg; S. Chawla; C. D. Chen; L. Divol; R. Fedosejevs; R. R. Freeman; H. Friesen; E. Giraldez; D. S. Hey; D. P. Higginson; C. Jarrot; G. E. Kemp; M. H. Key; A. Krygier; D. Larson; S. Le Pape; A. Link; T. Y. Ma; A. J. MacKinnon; H. S. MacLean; A. G. MacPhee; C. Murphy; V. Ovchinnikov; P. K. Patel; Y. Ping; H. Sawada; D. Schumacher; Y. Tsui; M. S. Wei; D. Van Woerkom; B. Westover; S. C. Wilks; T. Yabuuchi

doi:10.1088/1742-6596/244/2/022064

Divergence of laser-generated hot electrons generated in a cone geometry

R. B. Stephens
, K. U. Akli
, T. Bartal
, F. N. Beg
, S. Chawla
, C. D. Chen
, L. Divol
, R. Fedosejevs
, R. R. Freeman
, H. Friesen
, E. Giraldez
, D. S. Hey
, D. P. Higginson
, C. Jarrot
, G. E. Kemp
, M. H. Key
, A. Krygier
, D. Larson
, S. Le Pape
, A. Link

T. Y. Ma, A. J. MacKinnon, H. S. MacLean, A. G. MacPhee, C. Murphy, V. Ovchinnikov, P. K. Patel, Y. Ping, H. Sawada, D. Schumacher, Y. Tsui, M. S. Wei, D. Van Woerkom, B. Westover, S. C. Wilks, T. Yabuuchi

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

Abstract

Short-pulse, ultra-intense lasers generate hot electrons at the cone tip in a Fast Ignition target. Core heating and cone-wire experiments find that about 20% of the incident laser energy is coupled into a target, but do not characterize electron propagation direction, a critical parameter for ignition. Previous studies using flat foils suggest they propagate forward, diverging by ∼40°. Buried cone targets-conical cavities in multilayer metal foils-were developed to allow divergence measurements in an FI relevant geometry. Preliminary results show increased electron divergence in a 30 μm diameter cone tip which disappears for 90 μm diameter tips. Implications of the experiment are discussed.

Original language	English
Article number	022064
Journal	Journal of Physics: Conference Series
Volume	244
Issue number	PART 2
DOIs	https://doi.org/10.1088/1742-6596/244/2/022064
Publication status	Published - 1 Jan 2010
Externally published	Yes

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Stephens, R. B., Akli, K. U., Bartal, T., Beg, F. N., Chawla, S., Chen, C. D., Divol, L., Fedosejevs, R., Freeman, R. R., Friesen, H., Giraldez, E., Hey, D. S., Higginson, D. P., Jarrot, C., Kemp, G. E., Key, M. H., Krygier, A., Larson, D., Le Pape, S., ... Yabuuchi, T. (2010). Divergence of laser-generated hot electrons generated in a cone geometry. Journal of Physics: Conference Series, 244(PART 2), Article 022064. https://doi.org/10.1088/1742-6596/244/2/022064

@article{7bfb44c6b97e415da5b5fafe303c38eb,

title = "Divergence of laser-generated hot electrons generated in a cone geometry",

abstract = "Short-pulse, ultra-intense lasers generate hot electrons at the cone tip in a Fast Ignition target. Core heating and cone-wire experiments find that about 20\% of the incident laser energy is coupled into a target, but do not characterize electron propagation direction, a critical parameter for ignition. Previous studies using flat foils suggest they propagate forward, diverging by ∼40°. Buried cone targets-conical cavities in multilayer metal foils-were developed to allow divergence measurements in an FI relevant geometry. Preliminary results show increased electron divergence in a 30 μm diameter cone tip which disappears for 90 μm diameter tips. Implications of the experiment are discussed.",

author = "Stephens, \{R. B.\} and Akli, \{K. U.\} and T. Bartal and Beg, \{F. N.\} and S. Chawla and Chen, \{C. D.\} and L. Divol and R. Fedosejevs and Freeman, \{R. R.\} and H. Friesen and E. Giraldez and Hey, \{D. S.\} and Higginson, \{D. P.\} and C. Jarrot and Kemp, \{G. E.\} and Key, \{M. H.\} and A. Krygier and D. Larson and \{Le Pape\}, S. and A. Link and Ma, \{T. Y.\} and MacKinnon, \{A. J.\} and MacLean, \{H. S.\} and MacPhee, \{A. G.\} and C. Murphy and V. Ovchinnikov and Patel, \{P. K.\} and Y. Ping and H. Sawada and D. Schumacher and Y. Tsui and Wei, \{M. S.\} and \{Van Woerkom\}, D. and B. Westover and Wilks, \{S. C.\} and T. Yabuuchi",

year = "2010",

month = jan,

day = "1",

doi = "10.1088/1742-6596/244/2/022064",

language = "English",

volume = "244",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

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Stephens, RB, Akli, KU, Bartal, T, Beg, FN, Chawla, S, Chen, CD, Divol, L, Fedosejevs, R, Freeman, RR, Friesen, H, Giraldez, E, Hey, DS, Higginson, DP, Jarrot, C, Kemp, GE, Key, MH, Krygier, A, Larson, D, Le Pape, S, Link, A, Ma, TY, MacKinnon, AJ, MacLean, HS, MacPhee, AG, Murphy, C, Ovchinnikov, V, Patel, PK, Ping, Y, Sawada, H, Schumacher, D, Tsui, Y, Wei, MS, Van Woerkom, D, Westover, B, Wilks, SC & Yabuuchi, T 2010, 'Divergence of laser-generated hot electrons generated in a cone geometry', Journal of Physics: Conference Series, vol. 244, no. PART 2, 022064. https://doi.org/10.1088/1742-6596/244/2/022064

TY - JOUR

T1 - Divergence of laser-generated hot electrons generated in a cone geometry

AU - Stephens, R. B.

AU - Akli, K. U.

AU - Bartal, T.

AU - Beg, F. N.

AU - Chawla, S.

AU - Chen, C. D.

AU - Divol, L.

AU - Fedosejevs, R.

AU - Freeman, R. R.

AU - Friesen, H.

AU - Giraldez, E.

AU - Hey, D. S.

AU - Higginson, D. P.

AU - Jarrot, C.

AU - Kemp, G. E.

AU - Key, M. H.

AU - Krygier, A.

AU - Larson, D.

AU - Le Pape, S.

AU - Link, A.

AU - Ma, T. Y.

AU - MacKinnon, A. J.

AU - MacLean, H. S.

AU - MacPhee, A. G.

AU - Murphy, C.

AU - Ovchinnikov, V.

AU - Patel, P. K.

AU - Ping, Y.

AU - Sawada, H.

AU - Schumacher, D.

AU - Tsui, Y.

AU - Wei, M. S.

AU - Van Woerkom, D.

AU - Westover, B.

AU - Wilks, S. C.

AU - Yabuuchi, T.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Short-pulse, ultra-intense lasers generate hot electrons at the cone tip in a Fast Ignition target. Core heating and cone-wire experiments find that about 20% of the incident laser energy is coupled into a target, but do not characterize electron propagation direction, a critical parameter for ignition. Previous studies using flat foils suggest they propagate forward, diverging by ∼40°. Buried cone targets-conical cavities in multilayer metal foils-were developed to allow divergence measurements in an FI relevant geometry. Preliminary results show increased electron divergence in a 30 μm diameter cone tip which disappears for 90 μm diameter tips. Implications of the experiment are discussed.

AB - Short-pulse, ultra-intense lasers generate hot electrons at the cone tip in a Fast Ignition target. Core heating and cone-wire experiments find that about 20% of the incident laser energy is coupled into a target, but do not characterize electron propagation direction, a critical parameter for ignition. Previous studies using flat foils suggest they propagate forward, diverging by ∼40°. Buried cone targets-conical cavities in multilayer metal foils-were developed to allow divergence measurements in an FI relevant geometry. Preliminary results show increased electron divergence in a 30 μm diameter cone tip which disappears for 90 μm diameter tips. Implications of the experiment are discussed.

U2 - 10.1088/1742-6596/244/2/022064

DO - 10.1088/1742-6596/244/2/022064

M3 - Article

AN - SCOPUS:78651272542

SN - 1742-6588

VL - 244

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - PART 2

M1 - 022064

ER -

Divergence of laser-generated hot electrons generated in a cone geometry

Abstract

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