The effect of shock dynamics on compressibility of ignition-scale National Ignition Facility implosions

被引：21

作者：

Zylstra, A. B. ^{[1
]}

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

Seguin, F. H. ^{[1
]}

Hicks, D. G. ^{[2
]}

Dewald, E. L. ^{[2
]}

Robey, H. F. ^{[2
]}

Rygg, J. R. ^{[2
]}

Meezan, N. B. ^{[2
]}

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

Rinderknecht, H. G. ^{[1
]}

Friedrich, S. ^{[2
]}

Bionta, R. ^{[2
]}

Olson, R. ^{[3
,4
]}

Atherton, J. ^{[2
]}

Barrios, M. ^{[2
]}

Bell, P. ^{[2
]}

Benedetti, R. ^{[2
]}

Hopkins, L. Berzak ^{[2
]}

Betti, R. ^{[5
]}

Bradley, D. ^{[2
]}

Callahan, D. ^{[2
]}

Casey, D. ^{[2
]}

Collins, G. ^{[2
]}

Dixit, S. ^{[2
]}

Doeppner, T. ^{[2
]}

Edgell, D. ^{[5
]}

Edwards, M. J. ^{[2
]}

Johnson, M. Gatu ^{[1
]}

Glenn, S. ^{[2
]}

Glenzer, S. ^{[2
]}

Grim, G. ^{[4
]}

Hatchett, S. ^{[2
]}

Jones, O. ^{[2
]}

Khan, S. ^{[2
]}

Kilkenny, J. ^{[6
]}

Kline, J. ^{[4
]}

Knauer, J. ^{[5
]}

Kritcher, A. ^{[2
]}

Kyrala, G. ^{[4
]}

Landen, O. ^{[2
]}

LePape, S. ^{[2
]}

Li, C. K. ^{[1
]}

Lindl, J. ^{[2
]}

Ma, T. ^{[2
]}

Mackinnon, A. ^{[2
]}

Macphee, A. ^{[2
]}

Manuel, M. J. -E. ^{[1
]}

Meyerhofer, D. ^{[5
]}

Moody, J. ^{[2
]}

Moses, E. ^{[2
]}

机构：

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

[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[3] Sandia Natl Labs, Albuquerque, NM 87185 USA

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

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

[6] Gen Atom Co, San Diego, CA 92186 USA

来源：

PHYSICS OF PLASMAS | 2014年 / 21卷 / 11期

基金：

美国国家科学基金会;

关键词：

INERTIAL-CONFINEMENT-FUSION; DESIGN;

D O I：

10.1063/1.4900621

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The effects of shock dynamics on compressibility of indirect-drive ignition-scale surrogate implosions, CH shells filled with (DHe)-He-3 gas, have been studied using charged-particle spectroscopy. Spectral measurements of (DHe)-He-3 protons produced at the shock-bang time probe the shock dynamics and in-flight characteristics of an implosion. The proton shock yield is found to vary by over an order of magnitude. A simple model relates the observed yield to incipient hot-spot adiabat, suggesting that implosions with rapid radiation-power increase during the main drive pulse may have a 2x higher hot-spot adiabat, potentially reducing compressibility. A self-consistent 1-D implosion model was used to infer the areal density (rho R) and the shell center-of-mass radius (R-cm) from the downshift of the shock-produced (DHe)-He-3 protons. The observed rho R at shock-bang time is substantially higher for implosions, where the laser drive is on until near the compression bang time ("short-coast"), while longer-coasting implosions have lower rho R. This corresponds to a much larger temporal difference between the shock- and compression-bang time in the long-coast implosions (similar to 800 ps) than in the short-coast (similar to 400 ps); this will be verified with a future direct bang-time diagnostic. This model-inferred differential bang time contradicts radiation-hydrodynamic simulations, which predict constant 700-800 ps differential independent of coasting time; this result is potentially explained by uncertainties in modeling late-time ablation drive on the capsule. In an ignition experiment, an earlier shock-bang time resulting in an earlier onset of shell deceleration, potentially reducing compression and, thus, fuel rho R. (C) 2014 AIP Publishing LLC.

引用

页数：18

共 50 条

[21] Control of Be capsule low mode implosions symmetry at the National Ignition Facility
Kyrala, G. A.
Kline, J. L.
Yi, S.
Simakov, A. N.
Olson, R. E.
Wilson, D. C.
Batha, S.
Dewald, E. L.
Tommasini, R.
Ralph, J. E.
MacPhee, A. G.
Callahan, D. A.
Hurricane, O. A.
Hinkel, D. E.
Khan, S. F.
Ma, T.
Izumi, N.
Nagel, S.
Rygg, J. R.
9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015), 2016, 717
[22] Demonstration of the shock-timing technique for ignition targets on the National Ignition Facility
Boehly, T. R.
Munro, D.
Celliers, P. M.
Olson, R. E.
Hicks, D. G.
Goncharov, V. N.
Collins, G. W.
Robey, H. F.
Hu, S. X.
Morozas, J. A.
Sangster, T. C.
Landen, O. L.
Meyerhofer, D. D.
PHYSICS OF PLASMAS, 2009, 16 (05)
[23] Role of hot electrons in shock ignition constrained by experiment at the National Ignition Facility
Barlow, D.
Goffrey, T.
Bennett, K.
Scott, R. H. H.
Glize, K.
Theobald, W.
Anderson, K.
Solodov, A. A.
Rosenberg, M. J.
Hohenberger, M.
Woolsey, N. C.
Bradford, P.
Khan, M.
Arber, T. D.
PHYSICS OF PLASMAS, 2022, 29 (08)
[24] A polar-drive shock-ignition design for the National Ignition Facility
Anderson, K. S.
Betti, R.
McKenty, P. W.
Collins, T. J. B.
Hohenberger, M.
Theobald, W.
Craxton, R. S.
Delettrez, J. A.
Lafon, M.
Marozas, J. A.
Nora, R.
Skupsky, S.
Shvydky, A.
PHYSICS OF PLASMAS, 2013, 20 (05)
[25] The effect of laser spot shapes on polar-direct-drive implosions on the National Ignition Facility
Weilacher, F.
Radha, P. B.
Collins, T. J. B.
Marozas, J. A.
PHYSICS OF PLASMAS, 2015, 22 (03)
[26] Implosion dynamics measurements at the National Ignition Facility
Hicks, D. G.
Meezan, N. B.
Dewald, E. L.
Mackinnon, A. J.
Olson, R. E.
Callahan, D. A.
Doeppner, T.
Benedetti, L. R.
Bradley, D. K.
Celliers, P. M.
Clark, D. S.
Di Nicola, P.
Dixit, S. N.
Dzenitis, E. G.
Eggert, J. E.
Farley, D. R.
Frenje, J. A.
Glenn, S. M.
Glenzer, S. H.
Hamza, A. V.
Heeter, R. F.
Holder, J. P.
Izumi, N.
Kalantar, D. H.
Khan, S. F.
Kline, J. L.
Kroll, J. J.
Kyrala, G. A.
Ma, T.
MacPhee, A. G.
McNaney, J. M.
Moody, J. D.
Moran, M. J.
Nathan, B. R.
Nikroo, A.
Opachich, Y. P.
Petrasso, R. D.
Prasad, R. R.
Ralph, J. E.
Robey, H. F.
Rinderknecht, H. G.
Rygg, J. R.
Salmonson, D.
Schneider, M. B.
Simanovskaia, N.
Spears, B. K.
Tommasini, R.
Widmann, K.
Zylstra, A. B.
Collins, G. W.
PHYSICS OF PLASMAS, 2012, 19 (12)
[27] Overview of Progress and Future Prospects in Indirect Drive Implosions on the National Ignition Facility
Hurricane, O. A.
9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015), 2016, 717
[28] X-ray drive of beryllium capsule implosions at the National Ignition Facility
Wilson, D. C.
Yi, S. A.
Simakov, A. N.
Kline, J. L.
Kyrala, G. A.
Dewald, E. L.
Tommasini, R.
Ralph, J. E.
Olson, R. E.
Strozzi, D. J.
Celliers, P. M.
Schneider, M. B.
MacPhee, A. G.
Zylstra, A. B.
Callahan, D. A.
Hurricane, O. A.
Milovich, J. L.
Hinkel, D. E.
Rygg, J. R.
Rinderknecht, H. G.
Sio, H.
Perry, T. S.
Batha, S.
9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015), 2016, 717
[29] Azimuthal Drive Asymmetry in Inertial Confinement Fusion Implosions on the National Ignition Facility
Rinderknecht, Hans G.
Casey, D. T.
Hatarik, R.
Bionta, R. M.
MacGowan, B. J.
Patel, P.
Landen, O. L.
Hartouni, E. P.
Hurricane, O. A.
PHYSICAL REVIEW LETTERS, 2020, 124 (14)
[30] First Liquid Layer Inertial Confinement Fusion Implosions at the National Ignition Facility
Olson, R. E.
Leeper, R. J.
Kline, J. L.
Zylstra, A. B.
Yi, S. A.
Biener, J.
Braun, T.
Kozioziemski, B. J.
Sater, J. D.
Bradley, P. A.
Peterson, R. R.
Haines, B. M.
Yin, L.
Hopkins, L. F. Berzak
Meezan, N. B.
Walters, C.
Biener, M. M.
Kong, C.
Crippen, J. W.
Kyrala, G. A.
Shah, R. C.
Herrmann, H. W.
Wilson, D. C.
Hamza, A. V.
Nikroo, A.
Batha, S. H.
PHYSICAL REVIEW LETTERS, 2016, 117 (24)

← 1 2 3 4 5 →