Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion

Harvey-Thompson, Adam James; Sefkow, Adam B.; Nagayama, Taisuke N.; Wei, Mingsheng; Campbell, Edward Michael; Fiksel, Gennady; Chang, Po -Yu; Davies, Jonathan R.; Barnak, Daniel H.; Glebov, Vladimir Y.; Fitzsimmons, Paul; Fooks, Julie; Blue, Brent E.

doi:10.1063/1.4938047

Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion

Journal Article · Mon Dec 21 23:00:00 EST 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4938047· OSTI ID:1237677

Harvey-Thompson, Adam James ^[1]; Sefkow, Adam B. ^[1]; Nagayama, Taisuke N. ^[1]; Wei, Mingsheng ^[2]; Campbell, Edward Michael ^[1]; Fiksel, Gennady ^[3]; Chang, Po -Yu ^[3]; Davies, Jonathan R. ^[3]; Barnak, Daniel H. ^[3]; Glebov, Vladimir Y. ^[3]; Fitzsimmons, Paul ^[2]; Fooks, Julie ^[2]; Blue, Brent E. ^[2]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
General Atomics, San Diego, CA (United States)
Univ. of Rochester, Rochester, NY (United States)

In this paper, we present a platform on the OMEGA EP Laser Facility that creates and diagnoses the conditions present during the preheat stage of the MAGnetized Liner Inertial Fusion (MagLIF) concept. Experiments were conducted using 9 kJ of 3ω (355 nm) light to heat an underdense deuterium gas (electron density: 2.5 × 10²⁰ cm^-3 = 0.025 of critical density) magnetized with a 10 T axial field. Results show that the deuterium plasma reached a peak electron temperature of 670 ± 140 eV, diagnosed using streaked spectroscopy of an argon dopant. The results demonstrate that plasmas relevant to the preheat stage of MagLIF can be produced at multiple laser facilities, thereby enabling more rapid progress in understanding magnetized preheat. Results are compared with magneto-radiation-hydrodynamics simulations, and plans for future experiments are described.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1237677

Alternate ID(s):: OSTI ID: 1234095

Report Number(s):: SAND--2015-6697J; 598946

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 22; ISSN PHPAEN; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

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Laser entrance window transmission and reflection measurements for preheating in magnetized liner inertial fusion Davies, J. R.; Bahr, R. E.; Barnak, D. H. Physics of Plasmas, Vol. 25, Issue 6 https://doi.org/10.1063/1.5030107	journal	June 2018
Magnetised thermal self-focusing and filamentation of long-pulse lasers in plasmas relevant to magnetised ICF experiments Watkins, H. C.; Kingham, R. J. Physics of Plasmas, Vol. 25, Issue 9 https://doi.org/10.1063/1.5049229	journal	September 2018
Enhancing performance of magnetized liner inertial fusion at the Z facility Slutz, S. A.; Gomez, M. R.; Hansen, S. B. Physics of Plasmas, Vol. 25, Issue 11 https://doi.org/10.1063/1.5054317	journal	November 2018
Origins and effects of mix on magnetized liner inertial fusion target performance Knapp, P. F.; Gomez, M. R.; Hansen, S. B. Physics of Plasmas, Vol. 26, Issue 1 https://doi.org/10.1063/1.5064548	journal	January 2019

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