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Title: Enhanced Relativistic-Electron-Beam Energy Loss in Warm Dense Aluminum

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1181315
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 114; Journal Issue: 9; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Vaisseau, X., Debayle, A., Honrubia, J. J., Hulin, S., Morace, A., Nicolaï, Ph., Sawada, H., Vauzour, B., Batani, D., Beg, F. N., Davies, J. R., Fedosejevs, R., Gray, R. J., Kemp, G. E., Kerr, S., Li, K., Link, A., McKenna, P., McLean, H. S., Mo, M., Patel, P. K., Park, J., Peebles, J., Rhee, Y. J., Sorokovikova, A., Tikhonchuk, V. T., Volpe, L., Wei, M., and Santos, J. J. Enhanced Relativistic-Electron-Beam Energy Loss in Warm Dense Aluminum. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.114.095004.
Vaisseau, X., Debayle, A., Honrubia, J. J., Hulin, S., Morace, A., Nicolaï, Ph., Sawada, H., Vauzour, B., Batani, D., Beg, F. N., Davies, J. R., Fedosejevs, R., Gray, R. J., Kemp, G. E., Kerr, S., Li, K., Link, A., McKenna, P., McLean, H. S., Mo, M., Patel, P. K., Park, J., Peebles, J., Rhee, Y. J., Sorokovikova, A., Tikhonchuk, V. T., Volpe, L., Wei, M., & Santos, J. J. Enhanced Relativistic-Electron-Beam Energy Loss in Warm Dense Aluminum. United States. doi:10.1103/PhysRevLett.114.095004.
Vaisseau, X., Debayle, A., Honrubia, J. J., Hulin, S., Morace, A., Nicolaï, Ph., Sawada, H., Vauzour, B., Batani, D., Beg, F. N., Davies, J. R., Fedosejevs, R., Gray, R. J., Kemp, G. E., Kerr, S., Li, K., Link, A., McKenna, P., McLean, H. S., Mo, M., Patel, P. K., Park, J., Peebles, J., Rhee, Y. J., Sorokovikova, A., Tikhonchuk, V. T., Volpe, L., Wei, M., and Santos, J. J. Wed . "Enhanced Relativistic-Electron-Beam Energy Loss in Warm Dense Aluminum". United States. doi:10.1103/PhysRevLett.114.095004.
@article{osti_1181315,
title = {Enhanced Relativistic-Electron-Beam Energy Loss in Warm Dense Aluminum},
author = {Vaisseau, X. and Debayle, A. and Honrubia, J. J. and Hulin, S. and Morace, A. and Nicolaï, Ph. and Sawada, H. and Vauzour, B. and Batani, D. and Beg, F. N. and Davies, J. R. and Fedosejevs, R. and Gray, R. J. and Kemp, G. E. and Kerr, S. and Li, K. and Link, A. and McKenna, P. and McLean, H. S. and Mo, M. and Patel, P. K. and Park, J. and Peebles, J. and Rhee, Y. J. and Sorokovikova, A. and Tikhonchuk, V. T. and Volpe, L. and Wei, M. and Santos, J. J.},
abstractNote = {},
doi = {10.1103/PhysRevLett.114.095004},
journal = {Physical Review Letters},
number = 9,
volume = 114,
place = {United States},
year = {Wed Mar 04 00:00:00 EST 2015},
month = {Wed Mar 04 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.114.095004

Citation Metrics:
Cited by: 11works
Citation information provided by
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  • We present results on laser-driven relativistic electron beam propagation through aluminum samples, which are either solid and cold or compressed and heated by laser-induced shock. A full numerical description of fast electron generation and transport is found to reproduce the experimental absolute K{sub α} yield and spot size measurements for varying target thicknesses, and to sequentially quantify the collisional and resistive electron stopping powers. The results demonstrate that both stopping mechanisms are enhanced in compressed Al samples and are attributed to the increase in the medium density and resistivity, respectively. For the achieved time- and space-averaged electronic current density, 〈j{submore » h}〉∼8×10{sup 10} A/cm{sup 2} in the samples, the collisional and resistive stopping powers in warm and compressed Al are estimated to be 1.5 keV/μm and 0.8 keV/μm, respectively. By contrast, for cold and solid Al, the corresponding estimated values are 1.1 keV/μm and 0.6 keV/μm. Prospective numerical simulations involving higher j{sub h} show that the resistive stopping power can reach the same level as the collisional one. In addition to the effects of compression, the effect of the transient behavior of the resistivity of Al during relativistic electron beam transport becomes progressively more dominant, and for a significantly high current density, j{sub h}∼10{sup 12} A/cm{sup 2}, cancels the difference in the electron resistive stopping power (or the total stopping power in units of areal density) between solid and compressed samples. Analytical calculations extend the analysis up to j{sub h}=10{sup 14} A/cm{sup 2} (representative of the full-scale fast ignition scenario of inertial confinement fusion), where a very rapid transition to the Spitzer resistivity regime saturates the resistive stopping power, averaged over the electron beam duration, to values of ∼1 keV/μm.« less
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  • Optical observations of the air fluorescence show that the rate of energy deposition of a repetitively pulsed high-current-density relativistic electron beam increases with pulse number. The data suggest that the high electric fields of the second and later pulses accelerate the unrecombined electrons from previous pulses and create additional ionization and energy deposition by electron avalanche. As expected, this optical fluorescence enhancement is seen to increase as the air pressure is decreased, because the increased electron lifetime at lower pressures leaves a higher electron density when subsequent pulses arrive. Absolute calibration of electron beam current and optical intensities has permittedmore » determination of the fluorescence efficiencies for each pulse as a function of atmospheric pressure. The fluorescence efficiencies for the first electron pulse reproduce previous observations of optical efficiency for ionizing radiation in air.« less