Visualizing fast electron energy transport into laser-compressed high-density fast-ignition targets

Jarrott, L. C.; Wei, M. S.; McGuffey, C.; Solodov, A. A.; Theobald, W.; Qiao, B.; Stoeckl, C.; Betti, R.; Chen, H.; Delettrez, J.; Döppner, 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.; Beg, F. N.

doi:10.1038/nphys3614

Title: Visualizing fast electron energy transport into laser-compressed high-density fast-ignition targets

Journal Article · Mon Jan 11 00:00:00 EST 2016 · Nature Physics

DOI:https://doi.org/10.1038/nphys3614· OSTI ID:1347276

Jarrott, L. C. ^[1]; Wei, M. S. ^[2]; McGuffey, C. ^[1]; Solodov, A. A. ^[3]; Theobald, W. ^[4]; Qiao, B. ^[5]; Stoeckl, C. ^[4]; Betti, R. ^[3]; Chen, H. ^[6]; Delettrez, J. ^[4]; Döppner, T. ^[6]; Giraldez, E. M. ^[2]; Glebov, V. Y. ^[4]; Habara, H. ^[7]; Iwawaki, T. ^[7]; Key, M. H. ^[6]; Luo, R. W. ^[2]; Marshall, F. J. ^[4]; McLean, H. S. ^[6]; Mileham, C. ^[4] more »

Univ. of California, San Diego, CA (United States). Center for Energy
General Atomics, San Diego, CA (United States)
Univ. of Rochester, NY (United States). Lab. for Laser Energetics, and Fusion Science Center
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Univ. of California, San Diego, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Osaka Univ., Suita, Osaka (Japan)
Univ. of Bordeaux, Talence (France)
Univ. of Nevada, Reno, NV (United States)

Understanding of fast electron generation inside the cone and their subsequent transport into hot dense plasmas is crucial to the success of the cone guided fast ignition (FI) scheme of inertial confinement fusion. In our prior work, we developed a new platform that measured, for the first time, the spatial map of fast electron transport in the vicinity of the core of an imploded shell in joint OMEGA and OMEGA EP experiments. In this University of California San Diego-led NLUF project we are using the same platform to investigate several methods of improving coupling efficiency into an imploded CH/CD shell attached to a re-entrant gold cone targets. The shell has an outer diameter of 870 µm consisting of a 15 µm thick outer CH ablator and a 23 µm thick inner CD layer. A Cu dopant (at ~ 1% atomic number density of CD) is added to the CD layer of the shell, which allows characterization of fast electrons transport via their induced Cu K-shell fluorescence radiation.

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Research Organization:: Univ. of California, San Diego, CA (United States); Univ. of Rochester, NY (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)

Grant/Contract Number:: NA0002033; NA0000854; NA0001944; FC02-04ER54789; FG02-95ER54839

OSTI ID:: 1347276

Report Number(s):: DOE-UCSD-2033

Journal Information:: Nature Physics, Vol. 12, Issue 5; ISSN 1745-2473

Publisher:: Nature Publishing Group (NPG)Copyright Statement

Country of Publication:: United States

Language:: English

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Direct observation of imploded core heating via fast electrons with super-penetration scheme Gong, T.; Habara, H.; Sumioka, K. Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-13574-8	journal	December 2019
Time-resolved measurements of fast electron recirculation for relativistically intense femtosecond scale laser-plasma interactions Green, J. S.; Booth, N.; Dance, R. J. Scientific Reports, Vol. 8, Issue 1 https://doi.org/10.1038/s41598-018-22422-6	journal	March 2018
Ultraintense laser absorption and γ -ray synchrotron radiation in near critical density plasmas Chang, H. X.; Qiao, B.; Zhang, Y. X. Physics of Plasmas, Vol. 24, Issue 4 https://doi.org/10.1063/1.4981213	journal	April 2017
Calibration and characterization of a highly efficient spectrometer in von Hamos geometry for 7-10 keV x-rays Jarrott, L. C.; Wei, M. S.; McGuffey, C. Review of Scientific Instruments, Vol. 88, Issue 4 https://doi.org/10.1063/1.4981793	journal	April 2017
Characterization of an imploding cylindrical plasma for electron transport studies using x-ray emission spectroscopy Dozières, M.; Hansen, S.; Forestier-Colleoni, P. Physics of Plasmas, Vol. 27, Issue 2 https://doi.org/10.1063/1.5125271	journal	February 2020
Revisit on ion acceleration mechanisms in solid targets driven by intense laser pulses Qiao, B.; Shen, X. F.; He, H. Plasma Physics and Controlled Fusion, Vol. 61, Issue 1 https://doi.org/10.1088/1361-6587/aaf18e	journal	November 2018
Petapascal Pressure Driven by Fast Isochoric Heating with a Multipicosecond Intense Laser Pulse Matsuo, Kazuki; Higashi, Naoki; Iwata, Natsumi Physical Review Letters, Vol. 124, Issue 3 https://doi.org/10.1103/physrevlett.124.035001	journal	January 2020
Peta-Pascal Pressure Driven by Fast Isochoric Heating with Multi-Picosecond Intense Laser Pulse Matsuo, Kazuki; Higashi, Naoki; Iwata, Natsumi arXiv https://doi.org/10.48550/arxiv.1907.10447	text	January 2019

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