Comment on “In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses”

Kemp, A. J.; Sentoku, Y.

doi:10.1103/PhysRevLett.116.159501

Title: Comment on “In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses”

Abstract

Sherlock et al. have reported on the heating of solid density targets by collisional damping of wakefields that are driven by relativistic electron bunches generated in relativistic laser matter interaction. Analyzing collisional particle-in-cell simulations they calculate the fast electron current j_f inside the plasma by adding contributions from electrons with energies greater than E_cut = 50 keV; time-integrating the specific resistive energy deposition η j²_f they arrive at a temperature profile and compare the result to the one 'measured' in their simulation, defined as the energy of particles with E < 30 keV; the discrepancy is due to collisional damping of wake fields (CDW). Here, we disagree with their metric of fast current, which leads to false conclusions about CDW heating being a volumetric, rather than surface effect.

Authors:

Kemp, A. J. ^[1]; Sentoku, Y. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of Nevada, Reno, NV (United States)

Publication Date:: Thu Apr 14 00:00:00 EDT 2016

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1367994

Alternate Identifier(s):: OSTI ID: 1247442

Report Number(s):: LLNL-JRNL-678702
Journal ID: ISSN 0031-9007; PRLTAO

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 116; Journal Issue: 15; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION; 42 ENGINEERING

Citation Formats


                    Kemp, A. J., and Sentoku, Y. Comment on “In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses”.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevLett.116.159501.

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                    Kemp, A. J., & Sentoku, Y. Comment on “In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses”.  United States.  https://doi.org/10.1103/PhysRevLett.116.159501

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                    Kemp, A. J., and Sentoku, Y. Thu .  
"Comment on “In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses”".  United States.  https://doi.org/10.1103/PhysRevLett.116.159501.  https://www.osti.gov/servlets/purl/1367994.

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@article{osti_1367994,

  title        = {Comment on “In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses”},

  author       = {Kemp, A. J. and Sentoku, Y.},

  abstractNote = {Sherlock et al. have reported on the heating of solid density targets by collisional damping of wakefields that are driven by relativistic electron bunches generated in relativistic laser matter interaction. Analyzing collisional particle-in-cell simulations they calculate the fast electron current jf inside the plasma by adding contributions from electrons with energies greater than Ecut = 50 keV; time-integrating the specific resistive energy deposition η j2f they arrive at a temperature profile and compare the result to the one 'measured' in their simulation, defined as the energy of particles with E < 30 keV; the discrepancy is due to collisional damping of wake fields (CDW). Here, we disagree with their metric of fast current, which leads to false conclusions about CDW heating being a volumetric, rather than surface effect.},

  doi          = {10.1103/PhysRevLett.116.159501},

  journal      = {Physical Review Letters},

  number       = 15,

  volume       = 116,

  place        = {United States},

  year         = {Thu Apr 14 00:00:00 EDT 2016},

  month        = {Thu Apr 14 00:00:00 EDT 2016}

}

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Works referenced in this record:

In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses
journal, December 2014

Sherlock, M.; Hill, E. G.; Evans, R. G.
Physical Review Letters, Vol. 113, Issue 25
DOI: 10.1103/PhysRevLett.113.255001

Simulation of laser–plasma interactions and fast-electron transport in inhomogeneous plasma
journal, June 2010

Cohen, B. I.; Kemp, A. J.; Divol, L.
Journal of Computational Physics, Vol. 229, Issue 12
DOI: 10.1016/j.jcp.2010.03.001

Overview of plasma-based accelerator concepts
journal, April 1996

Esarey, E.; Sprangle, P.; Krall, J.
IEEE Transactions on Plasma Science, Vol. 24, Issue 2
DOI: 10.1109/27.509991

Works referencing / citing this record:

Simple scaling equations for electron spectra, currents, and bulk heating in ultra-intense short-pulse laser-solid interaction
journal, July 2018

Kluge, T.; Bussmann, M.; Schramm, U.
Physics of Plasmas, Vol. 25, Issue 7
DOI: 10.1063/1.5037753

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Title: Comment on “In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses”

Abstract

Citation Formats

In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses journal, December 2014

Simulation of laser–plasma interactions and fast-electron transport in inhomogeneous plasma journal, June 2010

Overview of plasma-based accelerator concepts journal, April 1996

Simple scaling equations for electron spectra, currents, and bulk heating in ultra-intense short-pulse laser-solid interaction journal, July 2018

In-depth Plasma-Wave Heating of Dense Plasma Irradiated by Short Laser Pulses
journal, December 2014

Simulation of laser–plasma interactions and fast-electron transport in inhomogeneous plasma
journal, June 2010

Overview of plasma-based accelerator concepts
journal, April 1996

Simple scaling equations for electron spectra, currents, and bulk heating in ultra-intense short-pulse laser-solid interaction
journal, July 2018