Thin shell, high velocity inertial confinement fusion implosions on the national ignition facility

Experiments have recently been conducted at the National Ignition Facility utilizing inertial confinement fusion capsule ablators that are 175 and 165  μm in thickness, 10% and 15% thinner, respectively, than the nominal thickness capsule used throughout the high foot and most of the National Igniti...

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Bibliographic Details
Published in:Physical review letters 2015-04, Vol.114 (14), p.145004-145004, Article 145004
Main Authors: Ma, T, Hurricane, O A, Callahan, D A, Barrios, M A, Casey, D T, Dewald, E L, Dittrich, T R, Döppner, T, Haan, S W, Hinkel, D E, Berzak Hopkins, L F, Le Pape, S, MacPhee, A G, Pak, A, Park, H-S, Patel, P K, Remington, B A, Robey, H F, Salmonson, J D, Springer, P T, Tommasini, R, Benedetti, L R, Bionta, R, Bond, E, Bradley, D K, Caggiano, J, Celliers, P, Cerjan, C J, Church, J A, Dixit, S, Dylla-Spears, R, Edgell, D, Edwards, M J, Field, J, Fittinghoff, D N, Frenje, J A, Gatu Johnson, M, Grim, G, Guler, N, Hatarik, R, Herrmann, H W, Hsing, W W, Izumi, N, Jones, O S, Khan, S F, Kilkenny, J D, Knauer, J, Kohut, T, Kozioziemski, B, Kritcher, A, Kyrala, G, Landen, O L, MacGowan, B J, Mackinnon, A J, Meezan, N B, Merrill, F E, Moody, J D, Nagel, S R, Nikroo, A, Parham, T, Ralph, J E, Rosen, M D, Rygg, J R, Sater, J, Sayre, D, Schneider, M B, Shaughnessy, D, Spears, B K, Town, R P J, Volegov, P L, Wan, A, Widmann, K, Wilde, C H, Yeamans, C
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Ablation
Fluid dynamics
Ignition
Implosions
Inertial confinement fusion
Lasers
Reproducibility
Thin walled shells
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Summary:Experiments have recently been conducted at the National Ignition Facility utilizing inertial confinement fusion capsule ablators that are 175 and 165  μm in thickness, 10% and 15% thinner, respectively, than the nominal thickness capsule used throughout the high foot and most of the National Ignition Campaign. These three-shock, high-adiabat, high-foot implosions have demonstrated good performance, with higher velocity and better symmetry control at lower laser powers and energies than their nominal thickness ablator counterparts. Little to no hydrodynamic mix into the DT hot spot has been observed despite the higher velocities and reduced depth for possible instability feedthrough. Early results have shown good repeatability, with up to 1/2 the neutron yield coming from α-particle self-heating.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.114.145004