Observations of Multiple Nuclear Reaction Histories and Fuel-Ion Species Dynamics in Shock-Driven Inertial Confinement Fusion Implosions

Sio, Hong; Frenje, J. A.; Le, Ari Yitzchak; Atzeni, S.; Kwan, Thomas J. T; Gatu Johnson, M.; Kagan, Grigory; Stoeckl, C.; Li, C. K.; Parker, C. E.; Forrest, C. J.; Glebov, V.; Kabadi, N. V.; Bose, A.; Rinderknecht, H. G.; Amendt, P.; Casey, D. T.; Mancini, R.; Taitano, William; Keenan, Brett; Simakov, Andrei N.; Chacon, Luis; Regan, S. P.; Sangster, T. C.; Campbell, E. M.; Seguin, F. H.; Petrasso, R. D.

doi:10.1103/physrevlett.122.035001

Title: Observations of Multiple Nuclear Reaction Histories and Fuel-Ion Species Dynamics in Shock-Driven Inertial Confinement Fusion Implosions

Journal Article · 24 January 2019 · Physical Review Letters

DOI: https://doi.org/10.1103/physrevlett.122.035001 · OSTI ID:1657124

Sio, Hong ^[1]; Frenje, J. A. ^[1];

^[2]; Atzeni, S. ^[3];

^[2]; Gatu Johnson, M. ^[1];

^[2]; Stoeckl, C. ^[4]; Li, C. K. ^[1]; Parker, C. E. ^[1]; Forrest, C. J. ^[4]; Glebov, V. ^[4]; Kabadi, N. V. ^[1]; Bose, A. ^[1]; Rinderknecht, H. G. ^[5]; Amendt, P. ^[5]; Casey, D. T. ^[5]; Mancini, R. ^[6];

^[2];

^[2] more »

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of Rome (Italy)
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of Nevada, Reno, NV (United States)

Fuel-ion species dynamics in DT³He-gas-filled Inertial Confinement Fusion implosion is quantitatively assessed for the first time using simultaneously measured D³He and DT reaction histories. Here, these reaction histories are measured with the Particle X-ray Temporal Diagnostic, which captures the relative timing between different nuclear burns with unprecedented precision (~10 ps). The observed 50±10 ps earlier D³He reaction history timing (relative to DT) cannot be explained by average-ion hydrodynamic simulations, and is attributed to fuel-ion species separation between the D, T, and ³He ions during shock convergence and rebound. At the onset of the shock burn, inferred ³He/T fuel ratio in the burn region using the measured reaction histories is much higher as compared to the initial gas-fill ratio. As T and ³He have the same mass but different charge, these results indicate that the charge-to-mass ratio plays an important role in driving fuel-ion species separation during strong shock propagation.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1657124

Report Number(s):: LA-UR--18-30435

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 122; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Probing ion species separation and ion thermal decoupling in shock-driven implosions using multiple nuclear reaction histories Sio, H.; Larroche, O.; Atzeni, S. Physics of Plasmas, Vol. 26, Issue 7 https://doi.org/10.1063/1.5097605	journal	July 2019
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas Frenje, J. A. Plasma Physics and Controlled Fusion, Vol. 62, Issue 2 https://doi.org/10.1088/1361-6587/ab5137	journal	January 2020
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Universal relationship of compression shocks in two-dimensional Yukawa systems Lin, Wei; Murillo, M. S.; Feng, Yan Physical Review E, Vol. 101, Issue 1 https://doi.org/10.1103/physreve.101.013203	journal	January 2020

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