MIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

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

Author(s)
Rosenberg, Michael Jonathan; Zylstra, Alex Bennett; Seguin, Fredrick Hampton; Rinderknecht, Hans George; Frenje, Johan A; Gatu Johnson, Maria; Sio, Hong Weng; Waugh, Caleb Joseph; Sinenian, Nareg; Li, C. K.; Petrasso, Richard D; ... Show more Show less
Thumbnail
DownloadInvestigation of Ion Kinetic Effects in Direct-Drive Exploding-Pusher.pdf (2.220Mb)
PUBLISHER_POLICY

Publisher Policy

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.

Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Metadata
Show full item record
Abstract
Measurements of yield, ion temperature, areal density (ρR), 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 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 ρR 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.
Date issued
2014-12
URI
http://hdl.handle.net/1721.1/113281
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Plasma Science and Fusion Center
Journal
Physics of Plasmas
Publisher
American Institute of Physics (AIP)
Citation
Rosenberg, M. J. et al. “Investigation of Ion Kinetic Effects in Direct-Drive Exploding-Pusher Implosions at the NIF.” Physics of Plasmas 21, 12 (December 2014): 122712 © 2014 AIP Publishing
Version: Author's final manuscript
ISSN
1070-664X
1089-7674

Collections
  • MIT Open Access Articles

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries
PrivacyPermissionsAccessibilityContact us
MIT
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.