| Literature DB >> 27447511 |
S P Regan1, V N Goncharov1, I V Igumenshchev1, T C Sangster1, R Betti1,2, A Bose1,2, T R Boehly1, M J Bonino1, E M Campbell1, D Cao1, T J B Collins1, R S Craxton1, A K Davis1, J A Delettrez1, D H Edgell1, R Epstein1, C J Forrest1, J A Frenje3, D H Froula1, M Gatu Johnson3, V Yu Glebov1, D R Harding1, M Hohenberger1, S X Hu1, D Jacobs-Perkins1, R Janezic1, M Karasik4, R L Keck1, J H Kelly1, T J Kessler1, J P Knauer1, T Z Kosc1, S J Loucks1, J A Marozas1, F J Marshall1, R L McCrory1, P W McKenty1, D D Meyerhofer5, D T Michel1, J F Myatt1, S P Obenschain4, R D Petrasso3, P B Radha1, B Rice1, M J Rosenberg1, A J Schmitt4, M J Schmitt5, W Seka1, W T Shmayda1, M J Shoup1, A Shvydky1, S Skupsky1, A A Solodov1, C Stoeckl1, W Theobald1, J Ulreich1, M D Wittman1, K M Woo1,2, B Yaakobi1, J D Zuegel1.
Abstract
A record fuel hot-spot pressure P_{hs}=56±7 Gbar was inferred from x-ray and nuclear diagnostics for direct-drive inertial confinement fusion cryogenic, layered deuterium-tritium implosions on the 60-beam, 30-kJ, 351-nm OMEGA Laser System. When hydrodynamically scaled to the energy of the National Ignition Facility, these implosions achieved a Lawson parameter ∼60% of the value required for ignition [A. Bose et al., Phys. Rev. E 93, 011201(R) (2016)], similar to indirect-drive implosions [R. Betti et al., Phys. Rev. Lett. 114, 255003 (2015)], and nearly half of the direct-drive ignition-threshold pressure. Relative to symmetric, one-dimensional simulations, the inferred hot-spot pressure is approximately 40% lower. Three-dimensional simulations suggest that low-mode distortion of the hot spot seeded by laser-drive nonuniformity and target-positioning error reduces target performance.Entities:
Year: 2016 PMID： 27447511 DOI： 10.1103/PhysRevLett.117.025001
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161