Collimated Propagation of Fast Electron Beams Accelerated by High-Contrast Laser Pulses in Highly Resistive Shocked Carbon
- Univ. of Bordeaux, CNRS, CEA, Talence (France). Intensive Lasers and Applications Center (CELIA)
- Osaka Univ. (Japan). Inst. of Laser Engineering
- Univ. of Bordeaux, CNRS, CEA, Talence (France). Intensive Lasers and Applications Center (CELIA); Univ. of California, Los Angeles, CA (United States). Dept. of Electrical Engineering
- Univ. Paris-Saclay, CNRS, CEA, Gif-sur-Yvette (France). Polytechnic School and Lab. for the Use of Intense Lasers (LULI); Sorbonne Univ., Paris (France)
- Univ. of California, San Diego, CA (United States)
- Univ. of Alberta, Edmonton, AB (Canada). Dept. of Electrical and Computer Engineering
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Nevada, Reno, NV (United States)
In this study, collimated transport of ultrahigh intensity electron current was observed in cold and in laser-shocked vitreous carbon, in agreement with simulation predictions. The fast electron beams were created by coupling high-intensity and high-contrast laser pulses onto copper-coated cones drilled into the carbon samples. The guiding mechanism—observed only for times before the shock breakout at the inner cone tip—is due to self-generated resistive magnetic fields of ~ 0.5–1 kT arising from the intense currents of fast electrons in vitreous carbon, by virtue of its specific high resistivity over the range of explored background temperatures. The spatial distribution of the electron beams, injected through the samples at different stages of compression, was characterized by side-on imaging of hard x-ray fluorescence.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); French National Research Agency (ANR); European Union (EU)
- Grant/Contract Number:
- AC52-07NA27344; ANR-2011-BS04-014; ANR-10-IDEX-03-02; 633053
- OSTI ID:
- 1458623
- Report Number(s):
- LLNL-JRNL-742150; PRLTAO; 896793; TRN: US1901484
- Journal Information:
- Physical Review Letters, Vol. 118, Issue 20; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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