Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas

Jarrott, L. C.; McGuffey, C.; Beg, F. N.; Solodov, A. A.; Theobald, W.; Qiao, B.; Stoeckl, C.; Betti, R.; Chen, H.; Delettrez, J.; Doppner, T.; Giraldez, E. M.; Glebov, V. Y.; Habara, H.; Iwawaki, T.; Key, M. H.; Luo, R. W.; Marshall, F. J.; McLean, H. S.; Mileham, C.; Patel, P. K.; Santos, J. J.; Sawada, H.; Stephens, R. B.; Yabuuchi, T.; Wei, M. S.

doi:10.1063/1.4999108

Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas

Journal Article · Tue Oct 24 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4999108· OSTI ID:1411681

^[1]; ^[2]; Beg, F. N. ^[2]; Solodov, A. A. ^[3]; Theobald, W. ^[3]; Qiao, B. ^[2]; Stoeckl, C. ^[3]; Betti, R. ^[3]; Chen, H. ^[4]; ^[3]; Doppner, T. ^[4]; Giraldez, E. M. ^[5]; Glebov, V. Y. ^[3]; Habara, H. ^[6]; Iwawaki, T. ^[6]; Key, M. H. ^[4]; Luo, R. W. ^[5]; Marshall, F. J. ^[3]; ^[4]; Mileham, C. ^[3] more »

Univ. of California San Diego, La Jolla, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of California San Diego, La Jolla, CA (United States)
Univ. of Rochester, Rochester, NY (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)
Osaka Univ., Osaka (Japan)
Univ. of Bordeaux, Talence (France)
Univ. of Nevada, Reno, NV (United States)

Fast electron transport and spatial energy deposition are investigated in integrated cone-guided Fast Ignition experiments by measuring fast electron induced copper K-shell emission using a copper tracer added to deuterated plastic shells with a geometrically reentrant gold cone. Experiments were carried out at the Laboratory for Laser Energetics on the OMEGA/OMEGA-EP Laser where the plastic shells were imploded using 54 of the 60 OMEGA60 beams (3ω, 20 kJ), while the high intensity OMEGA-EP (BL2) beam (1 ω, 10 ps, 500 J, I_peak > 10¹⁹ W/cm²) was focused onto the inner cone tip. Here, a retrograde analysis using the hybrid-PIC electron transport code, ZUMA, is performed to examine the sensitivity of the copper Kα spatial profile on the laser-produced fast electrons, facilitating the optimization of new target point designs and laser configurations to improve the compressed core areal density by a factor of 4 and the fast electron energy coupling by a factor of 3.5.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344; FC02-04ER54789; FG02-05ER54834; NA0000854

OSTI ID:: 1411681

Alternate ID(s):: OSTI ID: 1402528
OSTI ID: 23055941

Report Number(s):: LLNL-JRNL--736430

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 24; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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