Ultrafast electron kinetics in short pulse laser-driven dense hydrogen

Zastrau, U.; Sperling, P.; Fortmann-Grote, C.; Becker, A.; Bornath, T.; Bredow, R.; Doppner, T.; Fennel, T.; Fletcher, L. B.; Forster, E.; Gode, S.; Gregori, G.; Harmand, M.; Hilbert, V.; Laarmann, T.; Lee, H. J.; Ma, T.; Meiwes-Broer, K. H.; Mithen, J. P.; Murphy, C. D.; Nakatsutsumi, M.; Neumayer, P.; Przystawik, A.; Skruszewicz, S.; Tiggesbaumker, J.; Toleikis, S.; White, T. G.; Glenzer, S. H.; Redmer, R.; Tschentscher, T.

doi:10.1088/0953-4075/48/22/224004

Title: Ultrafast electron kinetics in short pulse laser-driven dense hydrogen

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Abstract

Dense cryogenic hydrogen is heated by intense femtosecond infrared laser pulses at intensities of 10¹⁵ – 10¹⁶W cm^–2. Three-dimensional particle-in-cell (PIC) simulations predict that this heating is limited to the skin depth, causing an inhomogeneously heated outer shell with a cold core and two prominent temperatures of about $25$ and $$40\;\mathrm{eV}$$ for simulated delay times up to $$+70\;\mathrm{fs}$$ after the laser pulse maximum. Experimentally, the time-integrated emitted bremsstrahlung in the spectral range of 8–18 nm was corrected for the wavelength-dependent instrument efficiency. The resulting spectrum cannot be fit with a single temperature bremsstrahlung model, and the best fit is obtained using two temperatures of about 13 and $$30\;$$eV. The lower temperatures in the experiment can be explained by missing energy-loss channels in the simulations, as well as the inclusion of hot, non-Maxwellian electrons in the temperature calculation. Furthermore, we resolved the time-scale for laser-heating of hydrogen, and PIC results for laser–matter interaction were successfully tested against the experiment data.

Authors:

Zastrau, U. ^[1]; Sperling, P. ^[2]; Fortmann-Grote, C. ^[3]; Becker, A. ^[4]; Bornath, T. ^[4]; Bredow, R. ^[4]; Doppner, T. ^[5]; Fennel, T. ^[4]; Fletcher, L. B. ^[6]; Forster, E. ^[7]; Gode, S. ^[6]; Gregori, G. ^[8]; Harmand, M. ^[9]; Hilbert, V. ^[10]; Laarmann, T. ^[11]; Lee, H. J. ^[6]; Ma, T. ^[5]; Meiwes-Broer, K. H. ^[4]; Mithen, J. P. ^[8]; Murphy, C. D. ^[12] more »

European XFEL, Hamburg (Germany); Friedrich-Schiller-Univ., Jena (Germany)
SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. Rostock, Rostock (Germany)
Quantum Wise A/S, Copenhagen (Denmark)
Univ. Rostock, Rostock (Germany)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Friedrich-Schiller-Univ., Jena (Germany); Helmholtz-Institut Jena, Jena (Germany)
Univ. of Oxford, Oxford (United Kingdom)
Institut de mineralogie, Paris (France); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Friedrich-Schiller-Univ., Jena (Germany)
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); The Hamburg Centre for Ultrafast Imaging CUI, Hamburg (Germany)
Univ. of Edinburgh, Edinburgh (United Kingdom)
European XFEL, Hamburg (Germany)
Extreme Matter Institute, GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Imperial College, London (United Kingdom)

Publication Date:: Fri Sep 25 00:00:00 EDT 2015

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1249381

Alternate Identifier(s):: OSTI ID: 1260499

Report Number(s):: SLAC-PUB-16138; LLNL-JRNL-686307
Journal ID: ISSN 0953-4075

Grant/Contract Number:: AC02-76SF00515; AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. B, Atomic, Molecular and Optical Physics

Additional Journal Information:: Journal Volume: 48; Journal Issue: 22; Journal ID: ISSN 0953-4075

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 43 PARTICLE ACCELERATORS; PHYS; OPTICS; electron collision; emission; absorption; scattering of electromagnetic radiation; plasma production; heating by laser beams; 70 PLASMA PHYSICS AND FUSION

Citation Formats


                    Zastrau, U., Sperling, P., Fortmann-Grote, C., Becker, A., Bornath, T., Bredow, R., Doppner, T., Fennel, T., Fletcher, L. B., Forster, E., Gode, S., Gregori, G., Harmand, M., Hilbert, V., Laarmann, T., Lee, H. J., Ma, T., Meiwes-Broer, K. H., Mithen, J. P., Murphy, C. D., Nakatsutsumi, M., Neumayer, P., Przystawik, A., Skruszewicz, S., Tiggesbaumker, J., Toleikis, S., White, T. G., Glenzer, S. H., Redmer, R., and Tschentscher, T. Ultrafast electron kinetics in short pulse laser-driven dense hydrogen.  United States: N. p., 2015. 
Web.  doi:10.1088/0953-4075/48/22/224004.

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                    Zastrau, U., Sperling, P., Fortmann-Grote, C., Becker, A., Bornath, T., Bredow, R., Doppner, T., Fennel, T., Fletcher, L. B., Forster, E., Gode, S., Gregori, G., Harmand, M., Hilbert, V., Laarmann, T., Lee, H. J., Ma, T., Meiwes-Broer, K. H., Mithen, J. P., Murphy, C. D., Nakatsutsumi, M., Neumayer, P., Przystawik, A., Skruszewicz, S., Tiggesbaumker, J., Toleikis, S., White, T. G., Glenzer, S. H., Redmer, R., & Tschentscher, T. Ultrafast electron kinetics in short pulse laser-driven dense hydrogen.  United States.  https://doi.org/10.1088/0953-4075/48/22/224004

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                    Zastrau, U., Sperling, P., Fortmann-Grote, C., Becker, A., Bornath, T., Bredow, R., Doppner, T., Fennel, T., Fletcher, L. B., Forster, E., Gode, S., Gregori, G., Harmand, M., Hilbert, V., Laarmann, T., Lee, H. J., Ma, T., Meiwes-Broer, K. H., Mithen, J. P., Murphy, C. D., Nakatsutsumi, M., Neumayer, P., Przystawik, A., Skruszewicz, S., Tiggesbaumker, J., Toleikis, S., White, T. G., Glenzer, S. H., Redmer, R., and Tschentscher, T. Fri .  
"Ultrafast electron kinetics in short pulse laser-driven dense hydrogen".  United States.  https://doi.org/10.1088/0953-4075/48/22/224004.  https://www.osti.gov/servlets/purl/1249381.

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@article{osti_1249381,

  title        = {Ultrafast electron kinetics in short pulse laser-driven dense hydrogen},

  author       = {Zastrau, U. and Sperling, P. and Fortmann-Grote, C. and Becker, A. and Bornath, T. and Bredow, R. and Doppner, T. and Fennel, T. and Fletcher, L. B. and Forster, E. and Gode, S. and Gregori, G. and Harmand, M. and Hilbert, V. and Laarmann, T. and Lee, H. J. and Ma, T. and Meiwes-Broer, K. H. and Mithen, J. P. and Murphy, C. D. and Nakatsutsumi, M. and Neumayer, P. and Przystawik, A. and Skruszewicz, S. and Tiggesbaumker, J. and Toleikis, S. and White, T. G. and Glenzer, S. H. and Redmer, R. and Tschentscher, T.},

  abstractNote = {Dense cryogenic hydrogen is heated by intense femtosecond infrared laser pulses at intensities of 1015 – 1016W cm–2. Three-dimensional particle-in-cell (PIC) simulations predict that this heating is limited to the skin depth, causing an inhomogeneously heated outer shell with a cold core and two prominent temperatures of about $25$ and $40\;\mathrm{eV}$ for simulated delay times up to $+70\;\mathrm{fs}$ after the laser pulse maximum. Experimentally, the time-integrated emitted bremsstrahlung in the spectral range of 8–18 nm was corrected for the wavelength-dependent instrument efficiency. The resulting spectrum cannot be fit with a single temperature bremsstrahlung model, and the best fit is obtained using two temperatures of about 13 and $30\;$eV. The lower temperatures in the experiment can be explained by missing energy-loss channels in the simulations, as well as the inclusion of hot, non-Maxwellian electrons in the temperature calculation. Furthermore, we resolved the time-scale for laser-heating of hydrogen, and PIC results for laser–matter interaction were successfully tested against the experiment data.},

  doi          = {10.1088/0953-4075/48/22/224004},

  journal      = {Journal of Physics. B, Atomic, Molecular and Optical Physics},

  number       = 22,

  volume       = 48,

  place        = {United States},

  year         = {Fri Sep 25 00:00:00 EDT 2015},

  month        = {Fri Sep 25 00:00:00 EDT 2015}

}

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