Investigation of ion kinetic effects in direct-drive exploding-pusher implosions at the NIF (doi:10.7910/DVN/T0ZRRO)

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Investigation of ion kinetic effects in direct-drive exploding-pusher implosions at the NIF

doi:10.7910/DVN/T0ZRRO

Harvard Dataverse

2019-01-10

1

M. J. Rosenberg, A. B. Zylstra, F. H. Séguin, H. G. Rinderknecht, J. A. Frenje, M. Gatu Johnson, H. Sio, C. J. Waugh, N. Sinenian, C. K. Li, R. D. Petrasso, P. W. McKenty, M. Hohenberger, P. B. Radha, J. A. Delettrez, V. Yu. Glebov, R. Betti, V. N. Goncharov, J. P. Knauer, T. C. Sangster, S. LePape, A. J. Mackinnon, J. Pino, J. M. McNaney, J. R. Rygg, P. A. Amendt, C. Bellei, L. R. Benedetti, L. Berzak Hopkins, R. M. Bionta, D. T. Casey, L. Divol, M. J. Edwards, S. Glenn, S. H. Glenzer, D. G. Hicks, J. R. Kimbrough, O. L. Landen, J. D. Lindl, T. Ma, A. MacPhee, N. B. Meezan, J. D. Moody, M. J. Moran, H.-S. Park, B. A. Remington, H. Robey, M. D. Rosen, S. C. Wilks, R. A. Zacharias, H. W. Herrmann, N. M. Hoffman, G. A. Kyrala, R. J. Leeper, R. E. Olson, J. D. Kilkenny, A. Nikroo, 2019, "Investigation of ion kinetic effects in direct-drive exploding-pusher implosions at the NIF", https://doi.org/10.7910/DVN/T0ZRRO, Harvard Dataverse, V1

Investigation of ion kinetic effects in direct-drive exploding-pusher implosions at the NIF

doi:10.7910/DVN/T0ZRRO

M. J. Rosenberg, A. B. Zylstra, F. H. Séguin, H. G. Rinderknecht, J. A. Frenje, M. Gatu Johnson, H. Sio, C. J. Waugh, N. Sinenian, C. K. Li, R. D. Petrasso, P. W. McKenty, M. Hohenberger, P. B. Radha, J. A. Delettrez, V. Yu. Glebov, R. Betti, V. N. Goncharov, J. P. Knauer, T. C. Sangster, S. LePape, A. J. Mackinnon, J. Pino, J. M. McNaney, J. R. Rygg, P. A. Amendt, C. Bellei, L. R. Benedetti, L. Berzak Hopkins, R. M. Bionta, D. T. Casey, L. Divol, M. J. Edwards, S. Glenn, S. H. Glenzer, D. G. Hicks, J. R. Kimbrough, O. L. Landen, J. D. Lindl, T. Ma, A. MacPhee, N. B. Meezan, J. D. Moody, M. J. Moran, H.-S. Park, B. A. Remington, H. Robey, M. D. Rosen, S. C. Wilks, R. A. Zacharias, H. W. Herrmann, N. M. Hoffman, G. A. Kyrala, R. J. Leeper, R. E. Olson, J. D. Kilkenny, A. Nikroo

Harvard Dataverse

https://doi.org/10.7910/DVN/T0ZRRO

Physics, direct drive, ICF, kinetic effects, National Ignition Facility, nuclear diagnostic

Measurements of yield, ion temperature, areal density (rhoR), shell convergence, and bang time have been obtained in shock-driven, D2 and D3He gas-filled “exploding-pusher” inertial confinement fusion (ICF) implosions at the National Ignition Facility (NIF) to assess the impact of ion kinetic effects. These measurements probed the shock convergence phase of ICF implosions, a critical stage in hot-spot ignition experiments. The data complement previous studies of kinetic effects in shock-driven implosions. Ion temperature and fuel rhoR inferred from fusion-product spectroscopy are used to estimate the ion-ion mean free path in the gas. A trend of decreasing yields relative to the predictions of 2D draco hydrodynamics simulations with increasing Knudsen number (the ratio of ion-ion mean free path to minimum shell radius) suggests that ion kinetic effects are increasingly impacting the hot fuel region, in general agreement with previous results. The long mean free path conditions giving rise to ion kinetic effects in the gas are often prevalent during the shock phase of both exploding pushers and ablatively-driven implosions, including ignition-relevant implosions.

<a href="http://library.psfc.mit.edu/catalog/reports/2010/14ja/14ja081/abstract.php">PSFC REPORT PSFC/JA-14-81</a><br /><br />This work is presented in partial fulfillment of the first author’s PhD thesis and supported in part by US DoE (Grant No. DE-NA0001857), FSC (No. 5-24431), LLE (No. 415935-G), and LLNL (No. B600100).

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