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

Abstract

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.

Authors:
 [1];  [1];  [1];  [2];  [1];  [3];  [3];  [3];  [3];  [3];  [2];  [2];  [2]
+ Show Author Affiliations
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. General Atomics, San Diego, CA (United States)
  3. Univ. of Rochester, Rochester, NY (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1237677
Alternate Identifier(s):
OSTI ID: 1234095
Report Number(s):
SAND-2015-6697J
Journal ID: ISSN 1070-664X; PHPAEN; 598946
Grant/Contract Number:  
AC04-94AL85000; FC02-04ER54789; FG02-04ER54786; NA0001944
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 12; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; plasma temperature; magnetic fields; plasma diagnostics; neutrons; magnetized plasmas

Citation Formats

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, and Blue, Brent E. Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion. United States: N. p., 2015. Web. doi:10.1063/1.4938047.
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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. Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion. United States. https://doi.org/10.1063/1.4938047
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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, and Blue, Brent E. Tue . "Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion". United States. https://doi.org/10.1063/1.4938047. https://www.osti.gov/servlets/purl/1237677.
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@article{osti_1237677,
title = {Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion},
author = {Harvey-Thompson, Adam James and Sefkow, Adam B. and Nagayama, Taisuke N. and Wei, Mingsheng and Campbell, Edward Michael and Fiksel, Gennady and Chang, Po -Yu and Davies, Jonathan R. and Barnak, Daniel H. and Glebov, Vladimir Y. and Fitzsimmons, Paul and Fooks, Julie and Blue, Brent E.},
abstractNote = {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.},
doi = {10.1063/1.4938047},
journal = {Physics of Plasmas},
number = 12,
volume = 22,
place = {United States},
year = {Tue Dec 22 00:00:00 EST 2015},
month = {Tue Dec 22 00:00:00 EST 2015}
}
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https://doi.org/10.1063/1.4938047
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Works referenced in this record:

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    Works referencing / citing this record:

    Increasing the magnetic-field capability of the magneto-inertial fusion electrical discharge system using an inductively coupled coil
    journal, March 2018

    • Barnak, D. H.; Davies, J. R.; Fiksel, G.
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    • DOI: 10.1063/1.5012531

    Laser entrance window transmission and reflection measurements for preheating in magnetized liner inertial fusion
    journal, June 2018

    • Davies, J. R.; Bahr, R. E.; Barnak, D. H.
    • Physics of Plasmas, Vol. 25, Issue 6
    • DOI: 10.1063/1.5030107

    Magnetised thermal self-focusing and filamentation of long-pulse lasers in plasmas relevant to magnetised ICF experiments
    journal, September 2018

    • Watkins, H. C.; Kingham, R. J.
    • Physics of Plasmas, Vol. 25, Issue 9
    • DOI: 10.1063/1.5049229

    Enhancing performance of magnetized liner inertial fusion at the Z facility
    journal, November 2018

    • Slutz, S. A.; Gomez, M. R.; Hansen, S. B.
    • Physics of Plasmas, Vol. 25, Issue 11
    • DOI: 10.1063/1.5054317

    Origins and effects of mix on magnetized liner inertial fusion target performance
    journal, January 2019

    • Knapp, P. F.; Gomez, M. R.; Hansen, S. B.
    • Physics of Plasmas, Vol. 26, Issue 1
    • DOI: 10.1063/1.5064548
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