Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas

J.S. Green; V.M. Ovchinnikov; R.G. Evans; K.U. Akli; H. Azechi; F.N. Beg; C. Bellei; R.R. Freeman; H. Habara; R. Heathcote; M.H. Key; J.A. King; K.L. Lancaster; N.C. Lopes; T. Ma; A.J. MacKinnon; K. Markey; A. McPhee; Z. Najmudin; P. Nilson; R. Onofrei; R. Stephens; K. Takeda; K.A. Tanaka; W. Theobald; T. Tanimoto; J. Waugh; L. Van Woerkom; N.C. Woolsey; Matthew Zepf; J.R. Davies; P.A. Norreys

doi:10.1103/PhysRevLett.100.015003

Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas

J.S. Green
, V.M. Ovchinnikov
, R.G. Evans
, K.U. Akli
, H. Azechi
, F.N. Beg
, C. Bellei
, R.R. Freeman
, H. Habara
, R. Heathcote
, M.H. Key
, J.A. King
, K.L. Lancaster
, N.C. Lopes
, T. Ma
, A.J. MacKinnon
, K. Markey
, A. McPhee
, Z. Najmudin
, P. Nilson

R. Onofrei, R. Stephens, K. Takeda, K.A. Tanaka, W. Theobald, T. Tanimoto, J. Waugh, L. Van Woerkom, N.C. Woolsey, Matthew Zepf, J.R. Davies, P.A. Norreys

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

200 Citations (Scopus)

Abstract

Metal foil targets were irradiated with 1 mu m wavelength (lambda) laser pulses of 5 ps duration and focused intensities (I) of up to 4x10(19) W cm(-2), giving values of both I lambda(2) and pulse duration comparable to those required for fast ignition inertial fusion. The divergence of the electrons accelerated into the target was determined from spatially resolved measurements of x-ray K-alpha emission and from transverse probing of the plasma formed on the back of the foils. Comparison of the divergence with other published data shows that it increases with I lambda(2) and is independent of pulse duration. Two-dimensional particle-in-cell simulations reproduce these results, indicating that it is a fundamental property of the laser-plasma interaction.

Original language	English
Article number	015003
Journal	Physical Review Letters
Volume	100
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.100.015003
Publication status	Published - 11 Jan 2008

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.100.015003

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Green, J. S., Ovchinnikov, V. M., Evans, R. G., Akli, K. U., Azechi, H., Beg, F. N., Bellei, C., Freeman, R. R., Habara, H., Heathcote, R., Key, M. H., King, J. A., Lancaster, K. L., Lopes, N. C., Ma, T., MacKinnon, A. J., Markey, K., McPhee, A., Najmudin, Z., ... Norreys, P. A. (2008). Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas. Physical Review Letters, 100(1), Article 015003. https://doi.org/10.1103/PhysRevLett.100.015003

@article{74b527102f514c2ea394a19af06765e3,

title = "Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas",

abstract = "Metal foil targets were irradiated with 1 mu m wavelength (lambda) laser pulses of 5 ps duration and focused intensities (I) of up to 4x10(19) W cm(-2), giving values of both I lambda(2) and pulse duration comparable to those required for fast ignition inertial fusion. The divergence of the electrons accelerated into the target was determined from spatially resolved measurements of x-ray K-alpha emission and from transverse probing of the plasma formed on the back of the foils. Comparison of the divergence with other published data shows that it increases with I lambda(2) and is independent of pulse duration. Two-dimensional particle-in-cell simulations reproduce these results, indicating that it is a fundamental property of the laser-plasma interaction.",

author = "J.S. Green and V.M. Ovchinnikov and R.G. Evans and K.U. Akli and H. Azechi and F.N. Beg and C. Bellei and R.R. Freeman and H. Habara and R. Heathcote and M.H. Key and J.A. King and K.L. Lancaster and N.C. Lopes and T. Ma and A.J. MacKinnon and K. Markey and A. McPhee and Z. Najmudin and P. Nilson and R. Onofrei and R. Stephens and K. Takeda and K.A. Tanaka and W. Theobald and T. Tanimoto and J. Waugh and \{Van Woerkom\}, L. and N.C. Woolsey and Matthew Zepf and J.R. Davies and P.A. Norreys",

year = "2008",

month = jan,

day = "11",

doi = "10.1103/PhysRevLett.100.015003",

language = "English",

volume = "100",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "1",

}

Green, JS, Ovchinnikov, VM, Evans, RG, Akli, KU, Azechi, H, Beg, FN, Bellei, C, Freeman, RR, Habara, H, Heathcote, R, Key, MH, King, JA, Lancaster, KL, Lopes, NC, Ma, T, MacKinnon, AJ, Markey, K, McPhee, A, Najmudin, Z, Nilson, P, Onofrei, R, Stephens, R, Takeda, K, Tanaka, KA, Theobald, W, Tanimoto, T, Waugh, J, Van Woerkom, L, Woolsey, NC, Zepf, M, Davies, JR & Norreys, PA 2008, 'Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas', Physical Review Letters, vol. 100, no. 1, 015003. https://doi.org/10.1103/PhysRevLett.100.015003

TY - JOUR

T1 - Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas

AU - Green, J.S.

AU - Ovchinnikov, V.M.

AU - Evans, R.G.

AU - Akli, K.U.

AU - Azechi, H.

AU - Beg, F.N.

AU - Bellei, C.

AU - Freeman, R.R.

AU - Habara, H.

AU - Heathcote, R.

AU - Key, M.H.

AU - King, J.A.

AU - Lancaster, K.L.

AU - Lopes, N.C.

AU - Ma, T.

AU - MacKinnon, A.J.

AU - Markey, K.

AU - McPhee, A.

AU - Najmudin, Z.

AU - Nilson, P.

AU - Onofrei, R.

AU - Stephens, R.

AU - Takeda, K.

AU - Tanaka, K.A.

AU - Theobald, W.

AU - Tanimoto, T.

AU - Waugh, J.

AU - Van Woerkom, L.

AU - Woolsey, N.C.

AU - Zepf, Matthew

AU - Davies, J.R.

AU - Norreys, P.A.

PY - 2008/1/11

Y1 - 2008/1/11

N2 - Metal foil targets were irradiated with 1 mu m wavelength (lambda) laser pulses of 5 ps duration and focused intensities (I) of up to 4x10(19) W cm(-2), giving values of both I lambda(2) and pulse duration comparable to those required for fast ignition inertial fusion. The divergence of the electrons accelerated into the target was determined from spatially resolved measurements of x-ray K-alpha emission and from transverse probing of the plasma formed on the back of the foils. Comparison of the divergence with other published data shows that it increases with I lambda(2) and is independent of pulse duration. Two-dimensional particle-in-cell simulations reproduce these results, indicating that it is a fundamental property of the laser-plasma interaction.

AB - Metal foil targets were irradiated with 1 mu m wavelength (lambda) laser pulses of 5 ps duration and focused intensities (I) of up to 4x10(19) W cm(-2), giving values of both I lambda(2) and pulse duration comparable to those required for fast ignition inertial fusion. The divergence of the electrons accelerated into the target was determined from spatially resolved measurements of x-ray K-alpha emission and from transverse probing of the plasma formed on the back of the foils. Comparison of the divergence with other published data shows that it increases with I lambda(2) and is independent of pulse duration. Two-dimensional particle-in-cell simulations reproduce these results, indicating that it is a fundamental property of the laser-plasma interaction.

U2 - 10.1103/PhysRevLett.100.015003

DO - 10.1103/PhysRevLett.100.015003

M3 - Article

SN - 0031-9007

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

M1 - 015003

ER -

Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas

Abstract

ASJC Scopus subject areas

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