Time-resolved Kα spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects

Nilson, P. M.; Solodov, A. A.; Davies, J. R.; Theobald, W.; Mileham, C.; Stoeckl, C.; Begishev, I. A.; Zuegel, J. D.; Froula, D. H.; Betti, R.; Meyerhofer, D. D.

doi:10.1088/0953-4075/48/22/224001

Title: Time-resolved K_α spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects

Abstract

Time-resolved K_α spectroscopy measurements from high-intensity laser interactions with thin-foil solid targets are reviewed. Thin Cu foils were irradiated with 1- to 10-J, 1-ps pulses at focused intensities from 10¹⁸ to 10¹⁹ W/cm². The experimental data show K_α-emission pulse widths from 3 to 6 ps, increasing with laser intensity. The time-resolved K_α-emission data are compared to a hot-electron transport and K_α-production model that includes collisional electron-energy coupling, resistive heating, and electromagnetic field effects. The experimental data show good agreement with the model when a reduced ponderomotive scaling is used to describe the initial mean hot-electron energy over the relevant intensity range.

Authors:

Nilson, P. M. ^[1]; Solodov, A. A. ^[1]; Davies, J. R. ^[1]; Theobald, W. ^[1]; Mileham, C. ^[1]; Stoeckl, C. ^[1]; Begishev, I. A. ^[1]; Zuegel, J. D. ^[1]; Froula, D. H. ^[1]; Betti, R. ^[1]; Meyerhofer, D. D. ^[1]

Univ. of Rochester, Rochester, NY (United States)

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

Research Org.:: Univ. of Rochester, NY (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES)

OSTI Identifier:: 1222947

Alternate Identifier(s):: OSTI ID: 1238914

Grant/Contract Number:: NA0001944; Cooperative Agreement No. DE-FC02-0; SC-0012317

Resource Type:: Journal Article: 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:: 74 ATOMIC AND MOLECULAR PHYSICS; K-shell spectroscopy; high-intensity laser; plasma

Citation Formats


                    Nilson, P. M., Solodov, A. A., Davies, J. R., Theobald, W., Mileham, C., Stoeckl, C., Begishev, I. A., Zuegel, J. D., Froula, D. H., Betti, R., and Meyerhofer, D. D. Time-resolved Kα spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects.  United States: N. p., 2015. 
        Web.  doi:10.1088/0953-4075/48/22/224001.

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                    Nilson, P. M., Solodov, A. A., Davies, J. R., Theobald, W., Mileham, C., Stoeckl, C., Begishev, I. A., Zuegel, J. D., Froula, D. H., Betti, R., & Meyerhofer, D. D. Time-resolved Kα spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects.  United States.  https://doi.org/10.1088/0953-4075/48/22/224001

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                    Nilson, P. M., Solodov, A. A., Davies, J. R., Theobald, W., Mileham, C., Stoeckl, C., Begishev, I. A., Zuegel, J. D., Froula, D. H., Betti, R., and Meyerhofer, D. D. 2015.  
        "Time-resolved Kα spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects".  United States.  https://doi.org/10.1088/0953-4075/48/22/224001.  https://www.osti.gov/servlets/purl/1222947.

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@article{osti_1222947,

  title        = {Time-resolved Kα spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects},

  author       = {Nilson, P. M. and Solodov, A. A. and Davies, J. R. and Theobald, W. and Mileham, C. and Stoeckl, C. and Begishev, I. A. and Zuegel, J. D. and Froula, D. H. and Betti, R. and Meyerhofer, D. D.},

  abstractNote = {Time-resolved Kα spectroscopy measurements from high-intensity laser interactions with thin-foil solid targets are reviewed. Thin Cu foils were irradiated with 1- to 10-J, 1-ps pulses at focused intensities from 1018 to 1019 W/cm2. The experimental data show Kα-emission pulse widths from 3 to 6 ps, increasing with laser intensity. The time-resolved Kα-emission data are compared to a hot-electron transport and Kα-production model that includes collisional electron-energy coupling, resistive heating, and electromagnetic field effects. The experimental data show good agreement with the model when a reduced ponderomotive scaling is used to describe the initial mean hot-electron energy over the relevant intensity range.},

  doi          = {10.1088/0953-4075/48/22/224001},

  url          = {https://www.osti.gov/biblio/1222947},
  journal      = {Journal of Physics. B, Atomic, Molecular and Optical Physics},

  issn         = {0953-4075},

  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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Title: Time-resolved Kα spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects

Abstract

Citation Formats

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The role of hot electron refluxing in laser-generated K-alpha sources journal, October 2010

Regimes of suprathermal electron transport journal, August 1995

High-intensity laser-plasma interactions in the refluxing limit journal, May 2008

A multiterawatt laser using a high-contrast, optical parametric chirped-pulse preamplifier conference, January 2005

High-resolution 17–75keV backlighters for high energy density experiments journal, July 2008

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A study of picosecond laser–solid interactions up to 10 19 W cm −2 journal, February 1997

Hot electron production and heating by hot electrons in fast ignitor research journal, May 1998

Copper K-shell emission cross sections for laser–solid experiments journal, August 2013

Cross sections for K-shell ionization of atoms by electron impact journal, October 2003

Relativistic electron transport and confinement within charge-insulated, mass-limited targets journal, October 2007

Measurements of Electron Transport in Foils Irradiated with a Picosecond Time Scale Laser Pulse journal, May 2011

Time-Resolved Measurements of Hot-Electron Equilibration Dynamics in High-Intensity Laser Interactions with Thin-Foil Solid Targets journal, February 2012

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Energetic Heavy-Ion and Proton Generation from Ultraintense Laser-Plasma Interactions with Solids journal, August 2000

Forward Ion Acceleration in Thin Films Driven by a High-Intensity Laser journal, May 2000

Enhancement of Proton Acceleration by Hot-Electron Recirculation in Thin Foils Irradiated by Ultraintense Laser Pulses journal, May 2002

Bulk heating of solid-density plasmas during high-intensity-laser plasma interactions journal, January 2009

Measurement of Fast-Electron Energy Spectra and Preheating in Laser-Irradiated Targets journal, April 1979

Absorption of Ultrashort Laser Pulses by Solid Targets Heated Rapidly to Temperatures 1–1000 eV journal, July 1995

Hot-electron characterization from K α measurements in high-contrast, p -polarized, picosecond laser-plasma interactions journal, May 1993

Experimental Measurements of Hot Electrons Generated by Ultraintense ( > 10 19 W / cm 2 ) Laser-Plasma Interactions on Solid-Density Targets journal, July 1998

Scaling Hot-Electron Generation to High-Power, Kilojoule-Class Laser-Solid Interactions journal, December 2010

Enhanced Relativistic-Electron-Beam Energy Loss in Warm Dense Aluminum journal, March 2015

Effect of Laser Intensity on Fast-Electron-Beam Divergence in Solid-Density Plasmas journal, January 2008

K α fluorescence measurement of relativistic electron transport in the context of fast ignition journal, June 2004

Measurements of Energy Transport Patterns in Solid Density Laser Plasma Interactions at Intensities of 5 × 10 20 W cm − 2 journal, March 2007

Absorption of ultra-intense laser pulses journal, August 1992

High-dynamic-range temporal measurements ofshort pulses amplified by OPCPA journal, January 2007

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

Regimes of suprathermal electron transport conference, June 2016

Title: Time-resolved K_α spectroscopy measurements of hot-electron equilibration dynamics in thin-foil solid targets: Collisional and collective effects

Rapid heating of solid density material by a petawatt laser
journal, May 2005

High temperature, high density opacity measurements using short pulse lasers
journal, August 2010

Design of short pulse laser driven opacity experiments
journal, December 2013

Study of silver Kα and bremsstrahlung radiation from short-pulse laser-matter interactions with applications for x-ray radiography
journal, August 2010

Investigation of relativistic intensity laser generated hot electron dynamics via copper K _α imaging and proton acceleration
journal, December 2013

Creation of hot dense matter in short-pulse laser-plasma interaction with tamped titanium foils
journal, October 2007

Integrated simulation of the generation and transport of proton beams from laser-target interaction
journal, June 2006

Fast-electron transport in high-intensity short-pulse laser - solid experiments
journal, May 1997

Intense High-Energy Proton Beams from Petawatt-Laser Irradiation of Solids
journal, October 2000

Modeling Astrophysical Phenomena in the Laboratory with Intense Lasers
journal, May 1999

High-intensity laser interactions with mass-limited solid targets and implications for fast-ignition experiments on OMEGA EP
journal, May 2007

Scaling hot-electron generation to long-pulse, high-intensity laser–solid interactions
journal, May 2011

Absolute measurements of x-ray backlighter sources at energies above 10 keV
journal, May 2011

Collisional and collective effects in two dimensional model for fast-electron transport in refluxing regime
journal, January 2013

High energy proton acceleration in interaction of short laser pulse with dense plasma target
journal, May 2003

Experimental Characterization of a Strongly Coupled Solid Density Plasma Generated in a Short-pulse Laser Target Interaction
journal, July 2005

Ignition and high gain with ultrapowerful lasers
journal, May 1994

Hot surface ionic line emission and cold K-inner shell emission from petawatt-laser-irradiated Cu foil targets
journal, April 2006

Electron, photon, and ion beams from the relativistic interaction of Petawatt laser pulses with solid targets
journal, May 2000

The role of hot electron refluxing in laser-generated K-alpha sources
journal, October 2010

Regimes of suprathermal electron transport
journal, August 1995

High-intensity laser-plasma interactions in the refluxing limit
journal, May 2008

A multiterawatt laser using a high-contrast, optical parametric chirped-pulse preamplifier
conference, January 2005

High-resolution 17–75keV backlighters for high energy density experiments
journal, July 2008

High-energy Kα radiography using high-intensity, short-pulse lasers
journal, May 2006

Hot electron diagnostic in a solid laser target by K -shell lines measurement from ultraintense laser–plasma interactions (3×1020 W/cm2,⩽400 J)
journal, January 2001

A study of picosecond laser–solid interactions up to 10 ¹⁹ W cm ⁻²
journal, February 1997

Hot electron production and heating by hot electrons in fast ignitor research
journal, May 1998

Copper K-shell emission cross sections for laser–solid experiments
journal, August 2013

Cross sections for K-shell ionization of atoms by electron impact
journal, October 2003

Relativistic electron transport and confinement within charge-insulated, mass-limited targets
journal, October 2007

Measurements of Electron Transport in Foils Irradiated with a Picosecond Time Scale Laser Pulse
journal, May 2011

Time-Resolved Measurements of Hot-Electron Equilibration Dynamics in High-Intensity Laser Interactions with Thin-Foil Solid Targets
journal, February 2012

Fast-electron-relaxation measurement for laser-solid interaction at relativistic laser intensities
journal, November 2007

Experimental measurements of deep directional columnar heating by laser-generated relativistic electrons at near-solid density
journal, December 2001

Isochoric Heating of Solid Aluminum by Ultrashort Laser Pulses Focused on a Tamped Target
journal, June 1999

Heating of Thin Foils with a Relativistic-Intensity Short-Pulse Laser
journal, December 2002

Energetic Heavy-Ion and Proton Generation from Ultraintense Laser-Plasma Interactions with Solids
journal, August 2000

Forward Ion Acceleration in Thin Films Driven by a High-Intensity Laser
journal, May 2000

Enhancement of Proton Acceleration by Hot-Electron Recirculation in Thin Foils Irradiated by Ultraintense Laser Pulses
journal, May 2002

Bulk heating of solid-density plasmas during high-intensity-laser plasma interactions
journal, January 2009

Measurement of Fast-Electron Energy Spectra and Preheating in Laser-Irradiated Targets
journal, April 1979

Absorption of Ultrashort Laser Pulses by Solid Targets Heated Rapidly to Temperatures 1–1000 eV
journal, July 1995

Hot-electron characterization from K α measurements in high-contrast, p -polarized, picosecond laser-plasma interactions
journal, May 1993

Experimental Measurements of Hot Electrons Generated by Ultraintense ( $> 10^{19} W / {cm}^{2}$ ) Laser-Plasma Interactions on Solid-Density Targets
journal, July 1998

Scaling Hot-Electron Generation to High-Power, Kilojoule-Class Laser-Solid Interactions
journal, December 2010

Enhanced Relativistic-Electron-Beam Energy Loss in Warm Dense Aluminum
journal, March 2015

Effect of Laser Intensity on Fast-Electron-Beam Divergence in Solid-Density Plasmas
journal, January 2008

$K_{α}$ fluorescence measurement of relativistic electron transport in the context of fast ignition
journal, June 2004

Measurements of Energy Transport Patterns in Solid Density Laser Plasma Interactions at Intensities of $5 \times 10^{20} W {cm}^{- 2}$
journal, March 2007

Absorption of ultra-intense laser pulses
journal, August 1992

High-dynamic-range temporal measurements ofshort pulses amplified by OPCPA
journal, January 2007

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

Regimes of suprathermal electron transport
conference, June 2016