Fuel-ion diffusion in shock-driven inertial confinement fusion implosions

Sio Hong; Li Chikang; Parker Cody E.; Lahmann Brandon; Le Ari; Atzeni Stefano; Petrasso Richard D.

doi:10.1063/1.5090783

Volume 4 Issue 5

Sep. 2019

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Sio Hong, Li Chikang, Parker Cody E., Lahmann Brandon, Le Ari, Atzeni Stefano, Petrasso Richard D.. Fuel-ion diffusion in shock-driven inertial confinement fusion implosions[J]. Matter and Radiation at Extremes, 2019, 4(5): 055401. doi: 10.1063/1.5090783

Citation:

Sio Hong, Li Chikang, Parker Cody E., Lahmann Brandon, Le Ari, Atzeni Stefano, Petrasso Richard D.. Fuel-ion diffusion in shock-driven inertial confinement fusion implosions[J]. Matter and Radiation at Extremes, 2019, 4(5): 055401. doi: 10.1063/1.5090783

Citation:

Sio Hong, Li Chikang, Parker Cody E., Lahmann Brandon, Le Ari, Atzeni Stefano, Petrasso Richard D.. Fuel-ion diffusion in shock-driven inertial confinement fusion implosions[J]. Matter and Radiation at Extremes, 2019, 4(5): 055401. doi: 10.1063/1.5090783

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Fuel-ion diffusion in shock-driven inertial confinement fusion implosions

doi: 10.1063/1.5090783

1.
Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
2.
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
3.
Dipartimento SBAI, Università degli Studi di Roma “La Sapienza,” Via Antonio Scarpa 14, 00161, Roma, Italy

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Corresponding author: a)Author to whom correspondence should be addressed: hsio@mit.edu
Received Date: 2019-01-29
Accepted Date: 2019-05-22
Publish Date: 2019-09-15

Abstract

Abstract

The impact of fuel-ion diffusion in inertial confinement fusion implosions is assessed using nuclear reaction yield ratios and reaction histories. In T³He-gas-filled (with trace D) shock-driven implosions, the observed TT/T³He yield ratio is ∼2× lower than expected from temperature scaling. In D³He-gas-filled (with trace T) shock-driven implosions, the timing of the D³He reaction history is ∼50 ps earlier than those of the DT reaction histories, and average-ion hydrodynamic simulations cannot reconcile this timing difference. Both experimental observations are consistent with reduced T ions in the burn region as predicted by multi-ion diffusion theory and particle-in-cell simulations.

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References(23)

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