Mitigation of cross-beam energy transfer in ignition-scale polar-direct-drive target designs for the National Ignition Facility

被引：14

作者：

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

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

机构：

[1] Univ Rochester, Lab Laser Energet, 250 East River Rd, Rochester, NY 14623 USA

来源：

PHYSICS OF PLASMAS | 2018年 / 25卷 / 07期

关键词：

INERTIAL-CONFINEMENT FUSION; SIMULATIONS; OMEGA;

D O I：

10.1063/1.5039513

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：

Two novel target designs are presented for using direct laser ablation (direct drive) at the National Ignition Facility to assemble and ignite cryogenic fuel using the existing indirect-drive beam configuration. These are the first ignition-relevant "polar" direct-drive target designs to include the physical effects of cross-beam energy transfer (CBET) between laser beams and nonlocal electron heat transport. A wavelength-detuning strategy is used to increase absorption and reduce scattered-light losses caused by CBET, allowing for ignition-relevant implosion velocities. Two designs are described: a moderate-adiabat sub-ignition alpha-burning design with a D-T neutron fusion yield of 1.2 x 10(17) and a lower-adiabat ignition design with a gain of 27. Both designs have moderate in-flight aspect ratios, indicating acceptable levels of hydrodynamic instability during the implosion. Published by AIP Publishing.

引用

页数：9

共 37 条

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Myatt, J. F.
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Marozas, J. A.
Marshall, F. J.
Michel, D. T.
Regan, S. P.
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Sangster, T. C.
Bates, J. W.
Betti, R.
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Collins, T. J. B.
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Edgell, D. H.
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MacPhee, A. G.
McCrory, R. L.
McKenty, P. W.
Meeker, J. F.
Meyerhofer, D. D.
Nagel, S. R.
Nikroo, A.
Obenschain, S.
Petrasso, R. D.
Ralph, J. E.
Rinderknecht, H. G.
Rosenberg, M. J.
Schmitt, A. J.
PHYSICS OF PLASMAS, 2015, 22 (05)
[2] Polar-direct-drive experiments at the National Ignition Facility
Radha, P. B.
Hohenberger, M.
Marshall, F. J.
Michel, D. T.
Bates, J.
Boehly, T. R.
Collins, T. J. B.
Craxton, R. S.
Delettrez, J. A.
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Marozas, J. A.
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9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015), 2016, 717
[3] Exploration of cross-beam energy transfer mitigation constraints for designing an ignition-scale direct-drive inertial confinement fusion driver
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Goncharov, V.
Froula, D. H.
PHYSICS OF PLASMAS, 2023, 30 (08)
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Davis, A. K.
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Michel, D. T.
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Edgell, D. H.
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Froula, D. H.
PHYSICS OF PLASMAS, 2016, 23 (05)
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PHYSICAL REVIEW E, 2022, 106 (05)
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Marozas, J. A.
Hohenberger, M.
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Radha, P. B.
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Marshall, F. J.
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PHYSICS OF PLASMAS, 2018, 25 (05)
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Craxton, RS
Jacobs-Perkins, DW
PHYSICAL REVIEW LETTERS, 2005, 94 (09) : 1 - 4
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Ellison, C. Leland
Whitley, Heather D.
Brown, Colin R. D.
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PHYSICS OF PLASMAS, 2018, 25 (07)
[9] The effect of laser spot shapes on polar-direct-drive implosions on the National Ignition Facility
Weilacher, F.
Radha, P. B.
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Marozas, J. A.
PHYSICS OF PLASMAS, 2015, 22 (03)
[10] Polar direct drive on the National Ignition Facility
Skupsky, S
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Craxton, RS
Betti, R
Collins, TJB
Delettrez, JA
Goncharov, VN
McKenty, PW
Radha, PB
Boehly, TR
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Marshall, FJ
Harding, DR
Kilkenny, JD
Meyerhofer, DD
Sangster, TC
McCrory, RL
PHYSICS OF PLASMAS, 2004, 11 (05) : 2763 - 2770

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