Production of hot near-solid-density plasma by electron energy transport in a laser-produced plasma

Tallents, G. J.; Key, M. H.; Norreys, P. A.; Brown, D. A.; Dunn, James P.; Baldis, H. A.

doi:10.1103/physreva.40.2857

Cited by 19 publications

(4 citation statements)

References 13 publications

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“…The targets were 200-µm-diam plastic foils with a concentric buried Al or Al/Fe microdot that was 100 µm in diameter [14]. The large microdot radius relative to the laser focal spot accentuates the energy transfer dynamics across sharp temperature and density gradients.…”

Section: Experiments Detailsmentioning

confidence: 99%

“…Experimental techniques using optimized drive conditions [13] and embedded thin sample layers [14] have been widely developed to control the formation of simultaneously hot, uniform, and dense plasmas. While such homogeneous conditions are typically sought for broad applications, such as opacity and equation-of-state studies of stellar-interior matter [15,16], purposefully driving energy density inhomogeneities is fundamental to understanding the behavior of high-temperature and far-from-equilibrium systems.…”

Section: Introductionmentioning

confidence: 99%

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Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems

et al. 2018

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Direct measurements of energy transfer across steep density and temperature gradients in a hot-dense-matter system are presented. Hot-dense-plasma conditions were generated by high-intensity laser irradiation of a thin-foil target containing a buried metal layer. Energy transfer to the layer was measured using picosecond time-resolved x-ray emission spectroscopy. The data show two x-ray flashes in time. Fully explicit, coupled particle-in-cell and collisional-radiative atomic kinetics model predictions reproduce these observations, connecting the two x-ray flashes with staged radial energy transfer within the target.

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Section: Experiments Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems

et al. 2018

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“…[1][2][3][4][5] Another interest of such plasmas is to study the ultrashort bright x-ray source due to its various potential applications including medical imaging and material science. Short-time x-ray emission from such plasmas has long been a topic of interest during recent years.…”

Section: Introductionmentioning

confidence: 99%

High intensity x-ray line emission from aluminum plasmas generated by a 120TW, 30fs laser pulse

Yang

Zhang

et al. 2008

Physics of Plasmas

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The K-shell x-ray spectra from the aluminum plasmas generated by the interaction of the 120 TW, 30 fs laser with aluminum targets have been measured by defocusing the laser beam. Laser energy-normalized intensity of the He-a line increases with the laser intensity approximately as a power law ϰI L ␥ with the much smaller exponent of ␥ = 0.062 compared to ␥ = 0.2ϳ 0.5 in the previous experiments, which is caused by the stronger radial thermal diffusivity in the target for the smaller laser spot. Laser-to-He-a line conversion efficiency of up to 1.9ϫ 10 −3 and as high as about 3 ϫ 10 13 photons/2 Sr aluminum He-a line x-ray source have been achieved for a single shot due to the preplasma effect and relatively large laser spot and energy for the single shot. The x-ray spectra as a function of the laser intensity are also analyzed to get the electron temperature and density.

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“…Several workers have published experiments in which, mostly timeintegrated, spectroscopy is used to diagnose plasmas created by irradiation of solid targets with laser pulses of subpicosecond to a few tens of picoseconds duration [1][2][3][4][5][6].…”

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confidence: 99%

Plasma conditions generated by interaction of a high brightness, prepulse free Raman amplified KrF laser pulse with solid targets

et al. 1992

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A high brightness, Raman amplified KrF laser has been used to irradiate solid targets with 12 ps laser pulses at intensities above 10'^ W/cm^ without the presence of a preformed plasma caused by low level amplified spontaneous emission prepulse. Time-resolved x-ray spectroscopy of the A^-shell emission from aluminum was used to infer electron densities in excess of 10^^ cm ~^ at temperatures of several hundred electronvolts.

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Production of hot near-solid-density plasma by electron energy transport in a laser-produced plasma

Cited by 19 publications

References 13 publications

Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems

Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems

High intensity x-ray line emission from aluminum plasmas generated by a 120TW, 30fs laser pulse

Plasma conditions generated by interaction of a high brightness, prepulse free Raman amplified KrF laser pulse with solid targets

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