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

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/5.0023612· OSTI ID:1811744
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  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Texas, Austin, TX (United States)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Georgia Institute of Technology, Atlanta, GA (United States)
  5. Florida A & M University, Tallahassee, FL (United States)
  6. Univ. of Texas, Austin, TX (United States)
  7. Univ. of California, Los Angeles, CA (United States)
  8. Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab. (RAL), Central Laser Facility
  9. General Atomics, San Diego, CA (United States)
  10. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  11. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  12. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
+ Show Author Affiliations

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). Furthermore, 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:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; NA0001808; NA0003864; 89233218CNA000001; SCW1651; 17-ERD-039; 20-ERD-048
OSTI ID:
1811744
Alternate ID(s):
OSTI ID: 1759146; OSTI ID: 1821382
Report Number(s):
LLNL-JRNL-815884; LA-UR-21-26891; 1024151; TRN: US2213188
Journal Information:
Physics of Plasmas, Vol. 28, Issue 1; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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