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Title: Influence of target system on the charge state, number, and spectral shape of ion beams accelerated by femtosecond high-intensity laser pulses

Abstract

Specific ion spectra have been obtained by irradiating spherical and planar targets with 40 fs Ti:Sa laser pulses at intensities of {approx}10{sup 19} W/cm{sup 2}. From the mass-limited spherical target, strong modulations in the proton/deuteron spectra and a high laser to ion energy conversion originate, whereas the planar target provides higher cutoff energies of protons. We compare qualitatively models in which the acceleration field is assigned to a multitemperature electron distribution and alternatively where multispecies ion acceleration is important, which both can account for the observed modulations in the spectra. The abundance of ion species and especially the observed strong suppression of the heavy ion species during the ion acceleration from planar targets are estimated on the basis of the interplay of ions with different mass during their ultrafast acceleration and the further ion-bunch propagation.

Authors:
; ; ;  [1];  [2]
  1. Max-Born-Institut, Max-Born Strasse 2a, D12489 Berlin (Germany)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
20974886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 3; Other Information: DOI: 10.1063/1.2695277; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; BEAM-PLASMA SYSTEMS; CHARGE STATES; COMPARATIVE EVALUATIONS; DEUTERON SPECTRA; ELECTRON TEMPERATURE; ELECTRONS; ENERGY CONVERSION; HEAVY IONS; ION BEAMS; ION TEMPERATURE; LASERS; LIGHT TRANSMISSION; PLASMA GUNS; PROTONS; PULSES; SPHERICAL CONFIGURATION

Citation Formats

Schnuerer, M., Ter-Avetisyan, S., Nickles, P. V., Andreev, A. A., and S.I. Vavilov State Optical Institute, Birzhevaya Line 12, St. Petersburg 199034. Influence of target system on the charge state, number, and spectral shape of ion beams accelerated by femtosecond high-intensity laser pulses. United States: N. p., 2007. Web. doi:10.1063/1.2695277.
Schnuerer, M., Ter-Avetisyan, S., Nickles, P. V., Andreev, A. A., & S.I. Vavilov State Optical Institute, Birzhevaya Line 12, St. Petersburg 199034. Influence of target system on the charge state, number, and spectral shape of ion beams accelerated by femtosecond high-intensity laser pulses. United States. doi:10.1063/1.2695277.
Schnuerer, M., Ter-Avetisyan, S., Nickles, P. V., Andreev, A. A., and S.I. Vavilov State Optical Institute, Birzhevaya Line 12, St. Petersburg 199034. Thu . "Influence of target system on the charge state, number, and spectral shape of ion beams accelerated by femtosecond high-intensity laser pulses". United States. doi:10.1063/1.2695277.
@article{osti_20974886,
title = {Influence of target system on the charge state, number, and spectral shape of ion beams accelerated by femtosecond high-intensity laser pulses},
author = {Schnuerer, M. and Ter-Avetisyan, S. and Nickles, P. V. and Andreev, A. A. and S.I. Vavilov State Optical Institute, Birzhevaya Line 12, St. Petersburg 199034},
abstractNote = {Specific ion spectra have been obtained by irradiating spherical and planar targets with 40 fs Ti:Sa laser pulses at intensities of {approx}10{sup 19} W/cm{sup 2}. From the mass-limited spherical target, strong modulations in the proton/deuteron spectra and a high laser to ion energy conversion originate, whereas the planar target provides higher cutoff energies of protons. We compare qualitatively models in which the acceleration field is assigned to a multitemperature electron distribution and alternatively where multispecies ion acceleration is important, which both can account for the observed modulations in the spectra. The abundance of ion species and especially the observed strong suppression of the heavy ion species during the ion acceleration from planar targets are estimated on the basis of the interplay of ions with different mass during their ultrafast acceleration and the further ion-bunch propagation.},
doi = {10.1063/1.2695277},
journal = {Physics of Plasmas},
number = 3,
volume = 14,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}
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