Characterization of intense laser-produced fast electrons using hard x-rays via bremsstrahlung
Abstract
For this research, energy distribution of high-power, short-pulse laser produced fast electrons was experimentally and numerically studied using high-energy bremsstrahlung x-rays. The hard x-ray photons and escaping electrons from various metal foils, irradiated by the 50 TW Leopard laser at Nevada Terawatt Facility, were recorded with a differential filter stack spectrometer that is sensitive to photons produced by mainly 0.5–2 MeV electrons and an electron spectrometer measuring >2 MeV electrons. The experimental bremsstrahlung and the slope of the measured escaped electrons were compared with an analytic calculation using an input electron spectrum estimated with the ponderomotive scaling. The result shows that the electron spectrum entering a Cu foil could be continuous single slope with the slope temperature of ~1.5 MeV in the detector range. The experiment and analytic calculation were then compared with a 2D particle-in-cell code, PICLS, including a newly developed radiation transport module. The simulation shows that a two-temperature electron distribution is generated at the laser interaction region, but only the hot component of the fast electrons flow into the target during the interaction because the low energy electron component is trapped by self-generated magnetic field in the preformed plasma. Finally, a significant amount of the photons lessmore »
- Authors:
-
- Univ. of Nevada, Reno, NV (United States). Department of Physics
- University of California San Diego, La Jolla, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1458675
- Alternate Identifier(s):
- OSTI ID: 1238855
- Report Number(s):
- LLNL-JRNL-742108
Journal ID: ISSN 0953-4075; 895148; TRN: US1901502
- Grant/Contract Number:
- AC52-07NA27344; FG02-05ER54834; SC0008827
- 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:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Sawada, H., Sentoku, Y., Bass, A., Griffin, B., Pandit, R., Beg, F., Chen, H., McLean, H., Link, A. J., Patel, P. K., and Ping, Y. Characterization of intense laser-produced fast electrons using hard x-rays via bremsstrahlung. United States: N. p., 2015.
Web. doi:10.1088/0953-4075/48/22/224008.
Sawada, H., Sentoku, Y., Bass, A., Griffin, B., Pandit, R., Beg, F., Chen, H., McLean, H., Link, A. J., Patel, P. K., & Ping, Y. Characterization of intense laser-produced fast electrons using hard x-rays via bremsstrahlung. United States. https://doi.org/10.1088/0953-4075/48/22/224008
Sawada, H., Sentoku, Y., Bass, A., Griffin, B., Pandit, R., Beg, F., Chen, H., McLean, H., Link, A. J., Patel, P. K., and Ping, Y. Fri .
"Characterization of intense laser-produced fast electrons using hard x-rays via bremsstrahlung". United States. https://doi.org/10.1088/0953-4075/48/22/224008. https://www.osti.gov/servlets/purl/1458675.
@article{osti_1458675,
title = {Characterization of intense laser-produced fast electrons using hard x-rays via bremsstrahlung},
author = {Sawada, H. and Sentoku, Y. and Bass, A. and Griffin, B. and Pandit, R. and Beg, F. and Chen, H. and McLean, H. and Link, A. J. and Patel, P. K. and Ping, Y.},
abstractNote = {For this research, energy distribution of high-power, short-pulse laser produced fast electrons was experimentally and numerically studied using high-energy bremsstrahlung x-rays. The hard x-ray photons and escaping electrons from various metal foils, irradiated by the 50 TW Leopard laser at Nevada Terawatt Facility, were recorded with a differential filter stack spectrometer that is sensitive to photons produced by mainly 0.5–2 MeV electrons and an electron spectrometer measuring >2 MeV electrons. The experimental bremsstrahlung and the slope of the measured escaped electrons were compared with an analytic calculation using an input electron spectrum estimated with the ponderomotive scaling. The result shows that the electron spectrum entering a Cu foil could be continuous single slope with the slope temperature of ~1.5 MeV in the detector range. The experiment and analytic calculation were then compared with a 2D particle-in-cell code, PICLS, including a newly developed radiation transport module. The simulation shows that a two-temperature electron distribution is generated at the laser interaction region, but only the hot component of the fast electrons flow into the target during the interaction because the low energy electron component is trapped by self-generated magnetic field in the preformed plasma. Finally, a significant amount of the photons less than 100 keV observed in the experiment could be attributed to the low energy electrons entering the foil a few picoseconds later after the gating field disappears.},
doi = {10.1088/0953-4075/48/22/224008},
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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Works referenced in this record:
Electron acceleration from the breaking of relativistic plasma waves
journal, October 1995
- Modena, A.; Najmudin, Z.; Dangor, A. E.
- Nature, Vol. 377, Issue 6550
Measurements of Energetic Proton Transport through Magnetized Plasma from Intense Laser Interactions with Solids
journal, January 2000
- Clark, E. L.; Krushelnick, K.; Davies, J. R.
- Physical Review Letters, Vol. 84, Issue 4
High-energy Kα radiography using high-intensity, short-pulse lasers
journal, May 2006
- Park, H. -S.; Chambers, D. M.; Chung, H. -K.
- Physics of Plasmas, Vol. 13, Issue 5
Characterization of a gamma-ray source based on a laser-plasma accelerator with applications to radiography
journal, March 2002
- Edwards, R. D.; Sinclair, M. A.; Goldsack, T. J.
- Applied Physics Letters, Vol. 80, Issue 12
High energy electrons, nuclear phenomena and heating in petawatt laser-solid experiments
journal, October 1999
- Cowan, T. E.; Perry, M. D.; Key, M. H.
- Laser and Particle Beams, Vol. 17, Issue 4
Relativistic Positron Creation Using Ultraintense Short Pulse Lasers
journal, March 2009
- Chen, Hui; Wilks, Scott C.; Bonlie, James D.
- Physical Review Letters, Vol. 102, Issue 10
Isochoric Heating of Solid Aluminum by Ultrashort Laser Pulses Focused on a Tamped Target
journal, June 1999
- Saemann, A.; Eidmann, K.; Golovkin, I. E.
- Physical Review Letters, Vol. 82, Issue 24
Heating of Thin Foils with a Relativistic-Intensity Short-Pulse Laser
journal, December 2002
- Audebert, P.; Shepherd, R.; Fournier, K. B.
- Physical Review Letters, Vol. 89, Issue 26
Rapid heating of solid density material by a petawatt laser
journal, May 2005
- Evans, R. G.; Clark, E. L.; Eagleton, R. T.
- Applied Physics Letters, Vol. 86, Issue 19
Bulk heating of solid-density plasmas during high-intensity-laser plasma interactions
journal, January 2009
- Nilson, P. M.; Theobald, W.; Myatt, J. F.
- Physical Review E, Vol. 79, Issue 1
Ignition and high gain with ultrapowerful lasers
journal, May 1994
- Tabak, Max; Hammer, James; Glinsky, Michael E.
- Physics of Plasmas, Vol. 1, Issue 5, p. 1626-1634
Fast heating of ultrahigh-density plasma as a step towards laser fusion ignition
journal, August 2001
- Kodama, R.; Norreys, P. A.; Mima, K.
- Nature, Vol. 412, Issue 6849
Experimental Confirmation of Ponderomotive-Force Electrons Produced by an Ultrarelativistic Laser Pulse on a Solid Target
journal, July 1996
- Malka, G.; Miquel, J. L.
- Physical Review Letters, Vol. 77, Issue 1
Studies of ultra-intense laser plasma interactions for fast ignition
journal, May 2000
- Tanaka, K. A.; Kodama, R.; Fujita, H.
- Physics of Plasmas, Vol. 7, Issue 5
A compact electron spectrometer for hot electron measurement in pulsed laser solid interaction
journal, March 2003
- Chen, H.; Patel, P. K.; Price, D. F.
- Review of Scientific Instruments, Vol. 74, Issue 3
Nuclear diagnostics for petawatt experiments (invited)
journal, January 2001
- Stoyer, M. A.; Sangster, T. C.; Henry, E. A.
- Review of Scientific Instruments, Vol. 72, Issue 1
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
- Yasuike, K.; Key, M. H.; Hatchett, S. P.
- Review of Scientific Instruments, Vol. 72, Issue 1
Studies on the transport of high intensity laser-generated hot electrons in cone coupled wire targets
journal, February 2009
- King, J. A.; Akli, K. U.; Freeman, R. R.
- Physics of Plasmas, Vol. 16, Issue 2
Hot Electron Temperature and Coupling Efficiency Scaling with Prepulse for Cone-Guided Fast Ignition
journal, March 2012
- Ma, T.; Sawada, H.; Patel, P. K.
- Physical Review Letters, Vol. 108, Issue 11
Characterizing the energy distribution of laser-generated relativistic electrons in cone-wire targets
journal, October 2012
- Sawada, H.; Higginson, D. P.; Link, A.
- Physics of Plasmas, Vol. 19, Issue 10
A study of picosecond laser–solid interactions up to 10 19 W cm −2
journal, February 1997
- Beg, F. N.; Bell, A. R.; Dangor, A. E.
- Physics of Plasmas, Vol. 4, Issue 2
Hot electron production and heating by hot electrons in fast ignitor research
journal, May 1998
- Key, M. H.; Cable, M. D.; Cowan, T. E.
- Physics of Plasmas, Vol. 5, Issue 5
Effect of plasma density scale length on the properties of bremsstrahlung x-ray sources created by picosecond laser pulses
journal, January 2009
- Courtois, C.; Compant La Fontaine, A.; Landoas, O.
- Physics of Plasmas, Vol. 16, Issue 1
Electron, photon, and ion beams from the relativistic interaction of Petawatt laser pulses with solid targets
journal, May 2000
- Hatchett, Stephen P.; Brown, Curtis G.; Cowan, Thomas E.
- Physics of Plasmas, Vol. 7, Issue 5
Measuring fast electron spectra and laser absorption in relativistic laser-solid interactions using differential bremsstrahlung photon detectors
journal, August 2013
- Scott, R. H. H.; Clark, E. L.; Pérez, F.
- Review of Scientific Instruments, Vol. 84, Issue 8
High-Energy Bremsstrahlung Diagnostics to Characterize Hot-Electron Production in Short-Pulse Laser-Plasma Experiments
journal, August 2012
- Meadowcroft, Anthony L.; Edwards, Ray D.
- IEEE Transactions on Plasma Science, Vol. 40, Issue 8
Bremsstrahlung production with high-intensity laser matter interactions and applications
journal, February 2007
- Galy, J.; Maučec, M.; Hamilton, D. J.
- New Journal of Physics, Vol. 9, Issue 2
High resolution bremsstrahlung and fast electron characterization in ultrafast intense laser–solid interactions
journal, December 2013
- Zulick, C.; Hou, B.; Dollar, F.
- New Journal of Physics, Vol. 15, Issue 12
Experimental Measurements of Hot Electrons Generated by Ultraintense ( ) Laser-Plasma Interactions on Solid-Density Targets
journal, July 1998
- Wharton, K. B.; Hatchett, S. P.; Wilks, S. C.
- Physical Review Letters, Vol. 81, Issue 4
Investigation of fast-electron-induced α x rays in laser-produced blow-off plasma
journal, March 2014
- Sawada, H.; Wei, M. S.; Chawla, S.
- Physical Review E, Vol. 89, Issue 3
Bremsstrahlung and Kα fluorescence measurements for inferring conversion efficiencies into fast ignition relevant hot electrons
journal, August 2009
- Chen, C. D.; Patel, P. K.; Hey, D. S.
- Physics of Plasmas, Vol. 16, Issue 8
Absorption of ultra-intense laser pulses
journal, August 1992
- Wilks, S. C.; Kruer, W. L.; Tabak, M.
- Physical Review Letters, Vol. 69, Issue 9
Characterization of the fast electrons distribution produced in a high intensity laser target interaction
journal, March 2014
- Westover, B.; Chen, C. D.; Patel, P. K.
- Physics of Plasmas, Vol. 21, Issue 3
Comparisons of angularly and spectrally resolved Bremsstrahlung measurements to two-dimensional multi-stage simulations of short-pulse laser-plasma interactions
journal, May 2013
- Chen, C. D.; Kemp, A. J.; Pérez, F.
- Physics of Plasmas, Vol. 20, Issue 5
Effects of target charging and ion emission on the energy spectrum of emitted electrons
journal, May 2011
- Link, A.; Freeman, R. R.; Schumacher, D. W.
- Physics of Plasmas, Vol. 18, Issue 5
Status of the Leopard Laser Project in Nevada Terawatt Facility
journal, November 2008
- Wiewior, Piotr P.; Astanovitskiy, A.; Aubry, G.
- Journal of Fusion Energy, Vol. 28, Issue 2
A New Method of Spectroscopy for Faint X-Radiations
journal, January 1928
- Ross, P. A.
- Journal of the Optical Society of America, Vol. 16, Issue 6
Evaluation of the sensitivity and fading characteristics of an image plate system for x-ray diagnostics
journal, November 2008
- Meadowcroft, A. L.; Bentley, C. D.; Stott, E. N.
- Review of Scientific Instruments, Vol. 79, Issue 11
High-energy x-ray backlighter spectrum measurements using calibrated image plates
journal, February 2011
- Maddox, B. R.; Park, H. S.; Remington, B. A.
- Review of Scientific Instruments, Vol. 82, Issue 2
Response functions of Fuji imaging plates to monoenergetic protons in the energy range 0.6–3.2 MeV
journal, January 2013
- Bonnet, T.; Comet, M.; Denis-Petit, D.
- Review of Scientific Instruments, Vol. 84, Issue 1
Numerical methods for particle simulations at extreme densities and temperatures: Weighted particles, relativistic collisions and reduced currents
journal, July 2008
- Sentoku, Y.; Kemp, A. J.
- Journal of Computational Physics, Vol. 227, Issue 14
Collisional particle-in-cell modeling for energy transport accompanied by atomic processes in dense plasmas
journal, July 2013
- Mishra, R.; Leblanc, P.; Sentoku, Y.
- Physics of Plasmas, Vol. 20, Issue 7
Kinetic effects and nonlinear heating in intense x-ray-laser-produced carbon plasmas
journal, November 2014
- Sentoku, Y.; Paraschiv, I.; Royle, R.
- Physical Review E, Vol. 90, Issue 5
A universal solver for hyperbolic equations by cubic-polynomial interpolation II. Two- and three-dimensional solvers
journal, September 1991
- Yabe, T.; Ishikawa, T.; Wang, P. Y.
- Computer Physics Communications, Vol. 66, Issue 2-3
HELIOS-CR – A 1-D radiation-magnetohydrodynamics code with inline atomic kinetics modeling
journal, May 2006
- MacFarlane, J. J.; Golovkin, I. E.; Woodruff, P. R.
- Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 99, Issue 1-3
Works referencing / citing this record:
Comparison of the effect of soft-core potentials and Coulombic potentials on bremsstrahlung during laser matter interaction
journal, April 2018
- Pandit, Rishi R.; Becker, Valerie R.; Barrington, Kasey
- Physics of Plasmas, Vol. 25, Issue 4
Characterization of fast electron divergence and energy spectrum from modeling of angularly resolved bremsstrahlung measurements
journal, December 2018
- Daykin, T. S.; Sawada, H.; Sentoku, Y.
- Physics of Plasmas, Vol. 25, Issue 12
Study of laser produced plasma in a longitudinal magnetic field
journal, June 2019
- Ivanov, V. V.; Maximov, A. V.; Betti, R.
- Physics of Plasmas, Vol. 26, Issue 6
Development of broadband x-ray radiography for diagnosing magnetically driven cylindrically compressed matter
journal, August 2019
- Sawada, H.; Daykin, T. S.; Hutchinson, T. M.
- Physics of Plasmas, Vol. 26, Issue 8