Demonstration of Fuel Hot-Spot Pressure in Excess of 50 Gbar for Direct-Drive, Layered Deuterium-Tritium Implosions on OMEGA

被引：95

作者：

Regan, S. P. ^{[1
]}

Goncharov, V. N. ^{[1
]}

Igumenshchev, I. V. ^{[1
]}

Sangster, T. C. ^{[1
]}

Betti, R. ^{[1
,2
,6
,7
]}

Bose, A. ^{[1
,2
,6
,7
]}

Boehly, T. R. ^{[1
]}

Bonino, M. J. ^{[1
]}

Campbell, E. M. ^{[1
]}

Cao, D. ^{[1
]}

Collins, T. J. B. ^{[1
]}

Craxton, R. S. ^{[1
]}

Davis, A. K. ^{[1
]}

Delettrez, J. A. ^{[1
]}

Edgell, D. H. ^{[1
]}

Epstein, R. ^{[1
]}

Forrest, C. J. ^{[1
]}

Frenje, J. A. ^{[3
]}

Froula, D. H. ^{[1
]}

Johnson, M. Gatu ^{[3
]}

Glebov, V. Yu. ^{[1
]}

Harding, D. R. ^{[1
]}

Hohenberger, M. ^{[1
]}

Hu, S. X. ^{[1
]}

Jacobs-Perkins, D. ^{[1
]}

Janezic, R. ^{[1
]}

Karasik, M. ^{[4
]}

Keck, R. L. ^{[1
]}

Kelly, J. H. ^{[1
]}

Kessler, T. J. ^{[1
]}

Knauer, J. P. ^{[1
]}

Kosc, T. Z. ^{[1
]}

Loucks, S. J. ^{[1
]}

Marozas, J. A. ^{[1
]}

Marshall, F. J. ^{[1
]}

McCrory, R. L. ^{[1
,6
,7
]}

McKenty, P. W. ^{[1
]}

Meyerhofer, D. D. ^{[5
]}

Michel, D. T. ^{[1
]}

Myatt, J. F. ^{[1
]}

Obenschain, S. P.

Petrasso, R. D. ^{[3
,4
]}

Radha, P. B. ^{[1
]}

Rice, B. ^{[1
]}

Rosenberg, M. J. ^{[1
]}

Schmitt, A. J. ^{[4
]}

Schmitt, M. J. ^{[5
]}

Seka, W. ^{[1
]}

Shmayda, W. T. ^{[1
]}

Shoup, M. J., III ^{[1
]}

机构：

[1] Univ Rochester, Lab Laser Energet, Rochester, NY 14623 USA

[2] Univ Rochester, Fus Sci Ctr, Rochester, NY 14623 USA

[3] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

[4] Naval Res Lab, Washington, DC 20375 USA

[5] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[6] Univ Rochester, Dept Mech Engn, Rochester, NY 14623 USA

[7] Univ Rochester, Dept Phys & Astron, Rochester, NY 14623 USA

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 02期

关键词：

LASER; PERFORMANCE; DISPERSION;

D O I：

10.1103/PhysRevLett.117.025001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 similar to 60% of the value required for ignition [A. Bose et al., Phys. Rev. E 93, LM15119ER (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.

引用

页数：5

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