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Title: Two decades of progress in understanding and control of laser plasma instabilities in indirect drive inertial fusion

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4946016· OSTI ID:1255266
 [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Our understanding of laser-plasma instability (LPI) physics has improved dramatically over the past two decades through advancements in experimental techniques, diagnostics, and theoretical and modeling approaches. We have progressed from single-beam experiments—ns pulses with ~kJ energy incident on hundred-micron-scale target plasmas with ~keV electron temperatures—to ones involving nearly 2 MJ energy in 192 beams onto multi-mm-scale plasmas with temperatures ~4 keV. At the same time, we have also been able to use smaller-scale laser facilities to substantially improve our understanding of LPI physics and evaluate novel approaches to their control. These efforts have led to a change in paradigm for LPI research, ushering in an era of engineering LPI to accomplish specific objectives, from tuning capsule implosion symmetry to fixing nonlinear saturation of LPI processes at acceptable levels to enable the exploration of high energy density physics in novel plasma regimes. A tutorial is provided that reviews the progress in the field from the vantage of the foundational LPI experimental results. The pedagogical framework of the simplest models of LPI will be employed, but attention will also be paid to settings where more sophisticated models are needed to understand the observations. Prospects for the application of our improved understanding for inertial fusion (both indirect- and direct-drive) and other applications will also be discussed.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1255266
Alternate ID(s):
OSTI ID: 1247607
Report Number(s):
LA-UR-16-20006; PHPAEN; TRN: US1601734
Journal Information:
Physics of Plasmas, Vol. 23, Issue 5; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 71 works
Citation information provided by
Web of Science

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Laser-direct-drive program: Promise, challenge, and path forward journal March 2017
Minimizing scatter-losses during pre-heat for magneto-inertial fusion targets journal February 2018
A plasma amplifier to combine multiple beams at NIF journal May 2018
Wavelength-detuning cross-beam energy transfer mitigation scheme for direct drive: Modeling and evidence from National Ignition Facility implosions journal May 2018
Feasibility of transition radiation as a diagnostic of hot electrons generated in indirect-drive experiment journal August 2018
Nonlinear transition from convective to absolute Raman instability with trapped electrons and inflationary growth of reflectivity journal October 2018
The laser shock station in the dynamic compression sector. I journal May 2019
Recent research progress of laser plasma interactions in Shenguang laser facilities journal September 2019
Improvement in Thomson scattering diagnostic precision via fitting the multiple-wavenumber spectra simultaneously journal August 2019
Kinetic simulation of nonlinear stimulated Raman scattering excited by a rotated polarized pump journal August 2019
Suppression of parametric instabilities in inhomogeneous plasma with multi-frequency light journal October 2019
Smoothing scheme for intensity sweep and polarization rotation at a subpicosecond timescale journal December 2019
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