Analytical estimates of proton acceleration in laser-produced turbulent plasmas
Journal Article
·
· Journal of Plasma Physics
- Univ. of Oxford (United Kingdom)
- Queens Univ., Belfast (United Kingdom)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Oxford (United Kingdom); Niels Bohr Inst., Copenhagen (Denmark)
With the advent of high power lasers, new opportunities have opened up for simulating astrophysical processes in the laboratory. We show that second-order Fermi acceleration can be directly investigated at the National Ignition Facility, Livermore. This requires measuring the momentum-space diffusion of 3 MeV protons produced within a turbulent plasma generated by a laser. In conclusion, treating Fermi acceleration as a biased diffusion process, we show analytically that a measurable broadening of the initial proton distribution is then expected for particles exiting the plasma.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1788327
- Report Number(s):
- LLNL-JRNL--817439; 1027246
- Journal Information:
- Journal of Plasma Physics, Journal Name: Journal of Plasma Physics Journal Issue: 6 Vol. 84; ISSN 0022-3778
- Publisher:
- Cambridge University PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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