Simulations of laser propagation and ionization in l'OASIS experiments

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We have conducted particle-in-cell simulations of laser pulse propagation through neutral He, including the effects of tunneling ionization, within the parameter regime of the l'OASIS experiments [1,2] at the Lawrence Berkeley National Laboratory (LBNL). The simulations show the theoretically predicted [3] blue shifting of the laser frequency at the leading edge of the pulse. The observed blue shifting is in good agreement with the experimental data. These results indicate that such computations can be used to accurately simulate a number of important effects related to tunneling ionization for laser-plasma accelerator concepts, such as steepening due to ionization-induced pump depletion, which ... continued below

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Dimitrov, D.A.; Bruhwiler, D.L.; Leemans, W.; Esarey, E.; Catravas, P.; Toth, C. et al. June 30, 2002.

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We have conducted particle-in-cell simulations of laser pulse propagation through neutral He, including the effects of tunneling ionization, within the parameter regime of the l'OASIS experiments [1,2] at the Lawrence Berkeley National Laboratory (LBNL). The simulations show the theoretically predicted [3] blue shifting of the laser frequency at the leading edge of the pulse. The observed blue shifting is in good agreement with the experimental data. These results indicate that such computations can be used to accurately simulate a number of important effects related to tunneling ionization for laser-plasma accelerator concepts, such as steepening due to ionization-induced pump depletion, which can seed and enhance instabilities. Our simulations show self-modulation occurring earlier when tunneling ionization is included then for a pre-ionized plasma.

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INIS; OSTI as DE00815484

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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--51589
  • Report No.: CBP Note-490
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 815484
  • Archival Resource Key: ark:/67531/metadc733760

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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, 2:25 p.m.

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Dimitrov, D.A.; Bruhwiler, D.L.; Leemans, W.; Esarey, E.; Catravas, P.; Toth, C. et al. Simulations of laser propagation and ionization in l'OASIS experiments, article, June 30, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc733760/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.