X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission

A. K. Rossall; L. M.R. Gartside; S. Chaurasia; S. Tripathi; D. S. Munda; N. K. Gupta; L. J. Dhareshwar; J. Gaffney; S. J. Rose; G. J. Tallents

doi:10.1088/0953-4075/43/15/155403

X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission

A. K. Rossall, L. M.R. Gartside, S. Chaurasia, S. Tripathi, D. S. Munda, N. K. Gupta, L. J. Dhareshwar, J. Gaffney, S. J. Rose, G. J. Tallents

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13 Citations (Scopus)

Abstract

Aluminium K_α emission (1.5 keV) produced by an 8 J, 500 ps, Nd:glass laser incident at 45° onto a layered target of 0.8 μm thick aluminium (front side) and 1 μm thick iron (backside) has been used to probe the opacity of iron plasma. Source broadened spectroscopy and continuum emission analysis show that whole beam self-focusing within the aluminium plasma results in a two-temperature spatial distribution. Thermal conduction from the laser-irradiated aluminium into the iron layer, enhanced by the whole beam self-focusing, results in a temperature of ∼10.150 eV in the iron layer. The iron opacity at a photon energy of 1.5 keV is shown to be strongly modified from cold values in agreement with IMP code opacities. Results presented here represent a feasibility study to seed future work using table-top laser systems for plasma opacity experiments.

Original language	English
Article number	155403
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	43
Issue number	15
DOIs	https://doi.org/10.1088/0953-4075/43/15/155403
Publication status	Published - 20 Jul 2010
Externally published	Yes

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Rossall, A. K., Gartside, L. M. R., Chaurasia, S., Tripathi, S., Munda, D. S., Gupta, N. K., Dhareshwar, L. J., Gaffney, J., Rose, S. J., & Tallents, G. J. (2010). X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission. Journal of Physics B: Atomic, Molecular and Optical Physics, 43(15), Article 155403. https://doi.org/10.1088/0953-4075/43/15/155403

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title = "X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission",

abstract = "Aluminium Kα emission (1.5 keV) produced by an 8 J, 500 ps, Nd:glass laser incident at 45° onto a layered target of 0.8 μm thick aluminium (front side) and 1 μm thick iron (backside) has been used to probe the opacity of iron plasma. Source broadened spectroscopy and continuum emission analysis show that whole beam self-focusing within the aluminium plasma results in a two-temperature spatial distribution. Thermal conduction from the laser-irradiated aluminium into the iron layer, enhanced by the whole beam self-focusing, results in a temperature of ∼10.150 eV in the iron layer. The iron opacity at a photon energy of 1.5 keV is shown to be strongly modified from cold values in agreement with IMP code opacities. Results presented here represent a feasibility study to seed future work using table-top laser systems for plasma opacity experiments.",

author = "Rossall, \{A. K.\} and Gartside, \{L. M.R.\} and S. Chaurasia and S. Tripathi and Munda, \{D. S.\} and Gupta, \{N. K.\} and Dhareshwar, \{L. J.\} and J. Gaffney and Rose, \{S. J.\} and Tallents, \{G. J.\}",

year = "2010",

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doi = "10.1088/0953-4075/43/15/155403",

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Rossall, AK, Gartside, LMR, Chaurasia, S, Tripathi, S, Munda, DS, Gupta, NK, Dhareshwar, LJ, Gaffney, J, Rose, SJ & Tallents, GJ 2010, 'X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 43, no. 15, 155403. https://doi.org/10.1088/0953-4075/43/15/155403

TY - JOUR

T1 - X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission

AU - Rossall, A. K.

AU - Gartside, L. M.R.

AU - Chaurasia, S.

AU - Tripathi, S.

AU - Munda, D. S.

AU - Gupta, N. K.

AU - Dhareshwar, L. J.

AU - Gaffney, J.

AU - Rose, S. J.

AU - Tallents, G. J.

PY - 2010/7/20

Y1 - 2010/7/20

N2 - Aluminium Kα emission (1.5 keV) produced by an 8 J, 500 ps, Nd:glass laser incident at 45° onto a layered target of 0.8 μm thick aluminium (front side) and 1 μm thick iron (backside) has been used to probe the opacity of iron plasma. Source broadened spectroscopy and continuum emission analysis show that whole beam self-focusing within the aluminium plasma results in a two-temperature spatial distribution. Thermal conduction from the laser-irradiated aluminium into the iron layer, enhanced by the whole beam self-focusing, results in a temperature of ∼10.150 eV in the iron layer. The iron opacity at a photon energy of 1.5 keV is shown to be strongly modified from cold values in agreement with IMP code opacities. Results presented here represent a feasibility study to seed future work using table-top laser systems for plasma opacity experiments.

AB - Aluminium Kα emission (1.5 keV) produced by an 8 J, 500 ps, Nd:glass laser incident at 45° onto a layered target of 0.8 μm thick aluminium (front side) and 1 μm thick iron (backside) has been used to probe the opacity of iron plasma. Source broadened spectroscopy and continuum emission analysis show that whole beam self-focusing within the aluminium plasma results in a two-temperature spatial distribution. Thermal conduction from the laser-irradiated aluminium into the iron layer, enhanced by the whole beam self-focusing, results in a temperature of ∼10.150 eV in the iron layer. The iron opacity at a photon energy of 1.5 keV is shown to be strongly modified from cold values in agreement with IMP code opacities. Results presented here represent a feasibility study to seed future work using table-top laser systems for plasma opacity experiments.

UR - https://www.scopus.com/pages/publications/78049352129

U2 - 10.1088/0953-4075/43/15/155403

DO - 10.1088/0953-4075/43/15/155403

M3 - Article

AN - SCOPUS:78049352129

SN - 0953-4075

VL - 43

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 15

M1 - 155403

ER -

X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission

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