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.

Impact of asymmetries on fuel performance in inertial confinement fusion

Author(s)
Appelbe, B. D.; Chittenden, J. P.; Delettrez, J.; Forrest, C.; Glebov, V. Yu.; Grimble, W.; Haines, B. M.; Igumenshchev, I.; Janezic, R.; Knauer, J. P.; Marshall, F. J.; Michel, T.; Stoeckl, C.; Walsh, C.; Zylstra, A. B.; Gatu Johnson, Maria; Frenje, Johan A; Lahmann, Brandon James; Seguin, Fredrick Hampton; Petrasso, Richard D; ... Show more Show less
Thumbnail
DownloadPhysRevE.98.051201.pdf (526.6Kb)
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
Low-mode asymmetries prevent effective compression, confinement, and heating of the fuel in inertial confinement fusion (ICF) implosions, and their control is essential to achieving ignition. Ion temperatures (T[subscript ion]) in ICF experiments are inferred from the broadening of primary neutron spectra. Directional motion (flow) of the fuel at burn also impacts broadening and will lead to artificially inflated “T[subscript ion]” values. Flow due to low-mode asymmetries is expected to give rise to line-of-sight variations in measured T[subscript ion]. We report on intentionally asymmetrically driven experiments at the OMEGA laser facility designed to test the ability to accurately predict and measure line-of-sight differences in apparent T[subscript ion] due to low-mode asymmetry-seeded flows. Contrasted to chimera and xrage simulations, the measurements demonstrate how all asymmetry seeds have to be considered to fully capture the flow field in an implosion. In particular, flow induced by the stalk that holds the target is found to interfere with the seeded asymmetry. A substantial stalk-seeded asymmetry in the areal density of the implosion is also observed.
Date issued
2018-11
URI
http://hdl.handle.net/1721.1/118984
Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering; Massachusetts Institute of Technology. Plasma Science and Fusion Center
Journal
Physical Review E
Publisher
American Physical Society
Citation
Gatu Johnson, M. et al. "Impact of asymmetries on fuel performance in inertial confinement fusion." Physical Review E 98, 5 (November 2018): 051201(R) © 2018 American Physical Society
Version: Final published version
ISSN
2470-0045
2470-0053

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.