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

A. J. Harvey-Thompson; A. B. Sefkow; T. N. Nagayama; M. S. Wei; E. M. Campbell; G. Fiksel; P. Y. Chang; J. R. Davies; D. H. Barnak; V. Y. Glebov; P. Fitzsimmons; J. Fooks; B. E. Blue

doi:10.1063/1.4938047

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

A. J. Harvey-Thompson, A. B. Sefkow, T. N. Nagayama, M. S. Wei, E. M. Campbell, G. Fiksel, P. Y. Chang, J. R. Davies, D. H. Barnak, V. Y. Glebov, P. Fitzsimmons, J. Fooks, B. E. Blue

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

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.

Original language	English
Article number	122708
Journal	Physics of Plasmas
Volume	22
Issue number	12
DOIs	https://doi.org/10.1063/1.4938047
Publication status	Published - 2015 Dec 1

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.4938047

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Harvey-Thompson, A. J., Sefkow, A. B., Nagayama, T. N., Wei, M. S., Campbell, E. M., Fiksel, G., Chang, P. Y., Davies, J. R., Barnak, D. H., Glebov, V. Y., Fitzsimmons, P., Fooks, J., & Blue, B. E. (2015). Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion. Physics of Plasmas, 22(12), Article 122708. https://doi.org/10.1063/1.4938047

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title = "Diagnosing laser-preheated magnetized plasmas relevant to magnetized liner inertial fusion",

abstract = "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.",

author = "Harvey-Thompson, {A. J.} and Sefkow, {A. B.} and Nagayama, {T. N.} and Wei, {M. S.} and Campbell, {E. M.} and G. Fiksel and Chang, {P. Y.} and Davies, {J. R.} and Barnak, {D. H.} and Glebov, {V. Y.} and P. Fitzsimmons and J. Fooks and Blue, {B. E.}",

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doi = "10.1063/1.4938047",

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AU - Harvey-Thompson, A. J.

AU - Sefkow, A. B.

AU - Nagayama, T. N.

AU - Wei, M. S.

AU - Campbell, E. M.

AU - Fiksel, G.

AU - Chang, P. Y.

AU - Davies, J. R.

AU - Barnak, D. H.

AU - Glebov, V. Y.

AU - Fitzsimmons, P.

AU - Fooks, J.

AU - Blue, B. E.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - 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.

AB - 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.

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

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