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Title: Channel optimization of high-intensity laser beams in millimeter-scale plasmas

Journal Article · · Physical Review E
 [1];  [2];  [2];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [8]
  1. Univ. of Oxford (United Kingdom). Dept. of Physics and Clarendon Lab.; Univ. of Bordeaux-CNRS-CEA (France). Intensive Lasers Center and Applications (CELIA); Laboratory for Laser Energetics, University of Rochester
  2. Univ. of Oxford (United Kingdom). Dept. of Physics and Clarendon Lab.
  3. Univ. of Oxford (United Kingdom). Dept. of Physics and Clarendon Lab.; Science and Technology Facilities Council (STFC) Rutherford Appleton Lab. (RAL), Chilton (United Kingdom)
  4. Osaka Univ. (Japan). Graduate School of Engineering
  5. Osaka Univ. (Japan). Graduate School of Engineering; Horia Hulubei National Inst. of Physics and Nuclear Engineering (IFIN-HH), Magurele (Romania). Extreme Light Infrastructure-Nuclear Physics (ELI-NP)
  6. Univ. of California, San Diego, CA (United States). Dept. of Mechanical and Aerospace Engineering
  7. General Atomics, San Diego, CA (United States)
  8. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  9. Univ. of Rochester, NY (United States). Dept. of Physics and Astronomy
+ Show Author Affiliations

Channeling experiments were performed at the OMEGA EP facility using relativistic intensity (> 1018 W/cm2) kilojoule laser pulses through large density scale length (~ 390-570 μm) laser-produced plasmas, demonstrating the effects of the pulse’s focal location and intensity as well as the plasma’s temperature on the resulting channel formation. The results show deeper channeling when focused into hot plasmas and at lower densities as expected. However, contrary to previous large scale particle-in-cell studies, the results also indicate deeper penetration by short (10 ps), intense pulses compared to their longer duration equivalents. To conclude, this new observation has many implications for future laser-plasma research in the relativistic regime.

Research Organization:
Univ. of Rochester, NY (United States)
Sponsoring Organization:
Advanced Research Computing High End Resource (ARCHER) National Supercomputing Service (United Kingdom); EUROfusion Consortium; Engineering and Physical Sciences Research Council (EPSRC); European Atomic Energy Community (Euratom); European Commission (EC); Japan Society for the Promotion of Science (JSPS); New York State Energy Research and Development Authority (NYSERDA); OSIRIS consortium; Plasma High-end Computing (HEC) Consortium; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21); Univ. of Chicago, IL (United States)
Grant/Contract Number:
NA0001944; SC0014666
OSTI ID:
1434591
Report Number(s):
2016--261, 1393; 2016-261, 1393, 2351
Journal Information:
Physical Review E, Journal Name: Physical Review E Journal Issue: 4 Vol. 97; ISSN PLEEE8; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Energy absorption in the laser-QED regime journal June 2019
A ten-inch manipulator (TIM) based fast-electron spectrometer with multiple viewing angles (OU-ESM) journal June 2019
Energy absorption in the laser-QED regime preprint January 2019

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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imaging
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ponderomotive effects
self-focusing and filamentation in plasmas