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Title: What is the surface temperature of a solid irradiated by a Petawatt laser?

Authors:
;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1325835
Grant/Contract Number:
AC05-00OR22725; AC52-07NA27344
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 9; Related Information: CHORUS Timestamp: 2016-12-26 00:47:07; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English

Citation Formats

Kemp, A. J., and Divol, L.. What is the surface temperature of a solid irradiated by a Petawatt laser?. United States: N. p., 2016. Web. doi:10.1063/1.4963334.
Kemp, A. J., & Divol, L.. What is the surface temperature of a solid irradiated by a Petawatt laser?. United States. doi:10.1063/1.4963334.
Kemp, A. J., and Divol, L.. 2016. "What is the surface temperature of a solid irradiated by a Petawatt laser?". United States. doi:10.1063/1.4963334.
@article{osti_1325835,
title = {What is the surface temperature of a solid irradiated by a Petawatt laser?},
author = {Kemp, A. J. and Divol, L.},
abstractNote = {},
doi = {10.1063/1.4963334},
journal = {Physics of Plasmas},
number = 9,
volume = 23,
place = {United States},
year = 2016,
month = 9
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.4963334

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  • A hot, 2 to 3 keV electron temperature surface plasma was observed in the interaction of a 0.7 ps petawatt laser beam with solid copper-foil targets at intensities >10^20 W/cm^2. Copper K-shell spectra were measured in the range of 8 to 9 keV using a single-photon-counting x-ray charged-coupled-device camera. In addition to K-sub alpha and K-sub beta inner shell lines, the emission contained the Cu He-sub alpha and Ly-sub alpha lines, allowing the temperature to be inferred. Measurements of the absolute K-sub alpha yield as a function of the laser intensity are in general agreement with a model that inlcudesmore » refluxing and confinement of the suprathermal electrons in the target volume.« less
  • A hot, T{sub e} {approx} 2- to 3-keV surface plasma was observed in the interaction of a 0.7-ps petawatt laser beam with solid copper-foil targets at intensities >10{sup 20} W/cm{sup 2}. Copper K-shell spectra were measured in the range of 8 to 9 keV using a single-photon-counting x-ray CCD camera. In addition to K{sub {alpha}} and K{sub {beta}} inner-shell lines, the emission contained the Cu He{sub {alpha}} and Ly{sub {alpha}} lines, allowing the temperature to be inferred. These lines have not been observed previously with ultrafast laser pulses. For intensities less than 3 x 10{sup 18} W/cm{sup 2}, only themore » K{sub {alpha}} and K{sub {beta}} inner-shell emissions are detected. Measurements of the absolute K{sub {alpha}} yield as a function of the laser intensity are in agreement with a model that includes refluxing and confinement of the suprathermal electrons in the target volume.« less
  • A hot, 2 to 3 keV electron temperature surface plasma was observed in the interaction of a 0.7 ps petawatt laser beam with solid copper-foil targets at intensities >10{sup 20} W/cm{sup 2}. Copper K-shell spectra were measured in the range of 8 to 9 keV using a single-photon-counting x-ray charged-coupled-device camera. In addition to K{sub {alpha}} and K{sub {beta}} inner-shell lines, the emission contained the Cu He{sub {alpha}} and Ly{sub {alpha}} lines, allowing the temperature to be inferred. These lines have not been observed previously with ultrafast laser pulses. For intensities less than 3x10{sup 18} W/cm{sup 2}, only the K{submore » {alpha}} and K{sub {beta}} inner-shell emissions are detected. Measurements of the absolute K{sub {alpha}} yield as a function of the laser intensity are in general agreement with a model that includes refluxing and confinement of the suprathermal electrons in the target volume.« less
  • Measurements of plasma temperature at the rear surface of foil targets due to heating by hot electrons, which were produced in short pulse high intensity laser matter interactions using the 150 J, 0.5 ps Titan laser, are reported. Extreme ultraviolet (XUV) imaging at 256 and 68 eV energies is used to determine spatially resolved target rear surface temperature patterns by comparing absolute intensities to radiation hydrodynamic modeling. XUV mirrors at these two energies were absolutely calibrated at the Advanced Light Source at the Lawrence Berkeley Laboratory. Temperatures deduced from both imagers are validated against each other within the range ofmore » 75-225 eV.« less