Scaling of laser-driven electron and proton acceleration as a function of laser pulse duration, energy, and intensity in the multi-picosecond regime

Dataset · Fri Mar 04 00:00:00 EST 2022

DOI:https://doi.org/10.7910/DVN/S4A61W· OSTI ID:1887790

Simpson, R. A.; Scott, G. G.; Mariscal, D.; Rusby, D.; King, P. M.; Grace, E.; Aghedo, A.; Pagano, I.; Sinclair, M.; Armstrong, C.; Manuel, M. J. E.; Haid, A.; Flippo, K.; Winslow, L.; Gatu Johnson, M.; Frenje, J. A.; Neely, D.; Kerr, S.; Williams, G. J.; Andrews, S. ; Cauble, R.; Charron, K.; Costa, R.; Fischer, B.; Maricle, S.; Stuart, B.; Albert, F.; Lemos, N.; Mackinnon, A.; Macphee, A.; Pak, A.; Ma, T.

A scaling study of short-pulse laser-driven proton and electron acceleration was conducted as a function of pulse duration, laser energy, and laser intensity in the multi-picosecond (ps) regime (∼0.8 ps–20 ps). Maximum proton energies significantly greater than established scaling laws were observed, consistent with observations at other multi-ps laser facilities. In addition, maximum proton energies and electron temperatures in this regime were found to be strongly dependent on the laser pulse duration and preplasma conditions. A modified proton scaling model is presented that is able to better represent the accelerated proton characteristics in this multi-ps regime.

• Research Organization: General Atomics, San Diego, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: NA0001808; NA0003864; AC52-07NA27344
• OSTI ID: 1887790
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY