Experimental achievement and signatures of ignition at the National Ignition Facility

被引：126

作者：

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

Kritcher, A. L. ^{[1
]}

Hurricane, O. A. ^{[1
]}

Callahan, D. A. ^{[1
]}

Ralph, J. E. ^{[1
]}

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

Pak, A. ^{[1
]}

Landen, O. L. ^{[1
]}

Bachmann, B. ^{[1
]}

Baker, K. L. ^{[1
]}

Hopkins, L. Berzak ^{[1
]}

Bhandarkar, S. D. ^{[1
]}

Biener, J. ^{[1
]}

Bionta, R. M. ^{[1
]}

Birge, N. W. ^{[2
]}

Braun, T. ^{[1
]}

Briggs, T. M. ^{[1
]}

Celliers, P. M. ^{[1
]}

Chen, H. ^{[1
]}

Choate, C. ^{[1
]}

Clark, D. S. ^{[1
]}

Divol, L. ^{[1
]}

Doppner, T. ^{[1
]}

Fittinghoff, D. ^{[1
]}

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

Johnson, M. Gatu ^{[3
]}

Gharibyan, N. ^{[1
]}

Haan, S. ^{[1
]}

Hahn, K. D. ^{[1
]}

Hartouni, E. ^{[1
]}

Hinkel, D. E. ^{[1
]}

Ho, D. D. ^{[1
]}

Hohenberger, M. ^{[1
]}

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

Huang, H. ^{[4
]}

Izumi, N. ^{[1
]}

Jeet, J. ^{[1
]}

Jones, O. ^{[1
]}

Kerr, S. M. ^{[1
]}

Khan, S. F. ^{[1
]}

Kleinrath, H. Geppert ^{[2
]}

Kleinrath, V. Geppert ^{[2
]}

Kong, C. ^{[4
]}

Lamb, K. M. ^{[2
]}

Le Pape, S. ^{[5
]}

Lemos, N. C. ^{[1
]}

Lindl, J. D. ^{[1
]}

MacGowan, B. J. ^{[1
]}

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

MacPhee, A. G. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA

[2] Los Alamos Natl Lab, Mail Stop F663, Los Alamos, NM 87545 USA

[3] MIT, Cambridge, MA 02139 USA

[4] Gen Atom, San Diego, CA 92186 USA

[5] Ecole Polytech, Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France

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

[7] Diamond Mat Gmbh, D-79108 Freiburg, Germany

[8] Focused Energy Inc, 11525-B Stonehollow Dr,Suite 200, Austin, TX 78758 USA

来源：

PHYSICAL REVIEW E | 2022年 / 106卷 / 02期

关键词：

FUSION;

D O I：

10.1103/PhysRevE.106.025202

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：

An inertial fusion implosion on the National Ignition Facility, conducted on August 8, 2021 (N210808), recently produced more than a megajoule of fusion yield and passed Lawson's criterion for ignition [Phys. Rev. Lett. 129, 075001 (2022)]. We describe the experimental improvements that enabled N210808 and present the first experimental measurements from an igniting plasma in the laboratory. Ignition metrics like the product of hot-spot energy and pressure squared, in the absence of self-heating, increased by -35%, leading to record values and an enhancement from previous experiments in the hot-spot energy (-3x), pressure (-2x), and mass (-2x). These results are consistent with self-heating dominating other power balance terms. The burn rate increases by an order of magnitude after peak compression, and the hot-spot conditions show clear evidence for burn propagation into the dense fuel surrounding the hot spot. These novel dynamics and thermodynamic properties have never been observed on prior inertial fusion experiments.

引用

页数：10

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