Electron acceleration mechanisms in the interaction of ultrashort lasers with underdense plasmas: Experiments and simulations

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An experiment investigating the production of relativistic electrons from the interaction of ultrashort multi-terawatt laser pulses with an underdense plasma is presented. Electrons were accelerated to tens of MeV and the maximum electron energy increased as the plasma density decreased. Simulations have been performed in order to model the experiment. They show a good agreement with the trends observed in the experiment and the spectra of accelerated electrons could be reproduced successfully. The simulations have been used to study the relative contribution of the different acceleration mechanisms: plasma wave acceleration, direct laser acceleration and stochastic heating. The results show that ... continued below

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Faure, J.; Lefebvre, E.; Malka, V.; Marques, J.-R.; Amiranoff, F.; Solodov, A. et al. June 30, 2002.

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An experiment investigating the production of relativistic electrons from the interaction of ultrashort multi-terawatt laser pulses with an underdense plasma is presented. Electrons were accelerated to tens of MeV and the maximum electron energy increased as the plasma density decreased. Simulations have been performed in order to model the experiment. They show a good agreement with the trends observed in the experiment and the spectra of accelerated electrons could be reproduced successfully. The simulations have been used to study the relative contribution of the different acceleration mechanisms: plasma wave acceleration, direct laser acceleration and stochastic heating. The results show that in low density case (1 percent of the critical density) acceleration by laser is dominant mechanism. The simulations at high density also suggest that direct laser acceleration is more efficient that stochastic heating.

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INIS; OSTI as DE00815480

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  • Advanced Accelerator Concepts Workshop, Mandalay Beach, CA (US), 06/23/2002--06/28/2002

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  • Report No.: LBNL--51575
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 815480
  • Archival Resource Key: ark:/67531/metadc738141

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  • June 30, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 4, 2016, 3:10 p.m.

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Faure, J.; Lefebvre, E.; Malka, V.; Marques, J.-R.; Amiranoff, F.; Solodov, A. et al. Electron acceleration mechanisms in the interaction of ultrashort lasers with underdense plasmas: Experiments and simulations, article, June 30, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc738141/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.