Ray-based modeling of cross-beam energy transfer at caustics

被引：19

作者：

Follett, R. K. ^{[1
]}

Shaw, J. G. ^{[1
]}

Myatt, J. F. ^{[2
]}

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

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

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

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

机构：

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

[2] Univ Alberta, Dept Elect & Comp Engn, 9211 116th St NW, Edmonton, AB T6G 1H9, Canada

来源：

PHYSICAL REVIEW E | 2018年 / 98卷 / 04期

关键词：

LASER; LIGHT;

D O I：

10.1103/PhysRevE.98.043202

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：

Cross-beam energy transfer (CBET) is a laser-plasma instability that significantly impacts laser energy deposition in laser-driven inertial confinement fusion (ICF) experiments. Radiation-hydrodynamics simulations, which are used to design and tune ICF implosions, use ray-based CBET models, but existing models require artificial multipliers to conserve energy and to obtain quantitative agreement with experiments. The discretization of the ray trajectories in traditional ray-based CBET models does not account for the rapid variation in CBET gain as rays pass through caustics. We introduce a model that allows one to treat caustics much more accurately and greatly improves energy conservation. The ray-based CBET calculations show excellent agreement with laser absorption from two-dimensional wave-based calculations (0.3% difference) and a three-dimensional 60-beam OMEGA implosion (2.4% difference) without artificial multipliers.

引用

页数：6

共 21 条

[1]

[Anonymous], 2004, International Series of Monographs on Physics.

[2] THE UPGRADE TO THE OMEGA-LASER-SYSTEM [J].

BOEHLY, TR ;

CRAXTON, RS ;

HINTERMAN, TH ;

KELLY, JH ;

KESSLER, TJ ;

KUMPAN, SA ;

LETZRING, SA ;

MCCRORY, RL ;

MORSE, SFB ;

SEKA, W ;

SKUPSKY, S ;

SOURES, JM ;

VERDON, CP .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (01) :508-510

[3] Direct-drive inertial confinement fusion: A review [J].

Craxton, R. S. ;

Anderson, K. S. ;

Boehly, T. R. ;

Goncharov, V. N. ;

Harding, D. R. ;

Knauer, J. P. ;

McCrory, R. L. ;

McKenty, P. W. ;

Meyerhofer, D. D. ;

Myatt, J. F. ;

Schmitt, A. J. ;

Sethian, J. D. ;

Short, R. W. ;

Skupsky, S. ;

Theobald, W. ;

Kruer, W. L. ;

Tanaka, K. ;

Betti, R. ;

Collins, T. J. B. ;

Delettrez, J. A. ;

Hu, S. X. ;

Marozas, J. A. ;

Maximov, A. V. ;

Michel, D. T. ;

Radha, P. B. ;

Regan, S. P. ;

Sangster, T. C. ;

Seka, W. ;

Solodov, A. A. ;

Soures, J. M. ;

Stoeckl, C. ;

Zuegel, J. D. .

PHYSICS OF PLASMAS, 2015, 22 (11)

[4] Isolating and quantifying cross-beam energy transfer in direct-drive implosions on OMEGA and the National Ignition Facility [J].

Davis, A. K. ;

Cao, D. ;

Michel, D. T. ;

Hohenberger, M. ;

Edgell, D. H. ;

Epstein, R. ;

Goncharov, V. N. ;

Hu, S. X. ;

Igumenshchev, I. V. ;

Marozas, J. A. ;

Maximov, A. V. ;

Myatt, J. F. ;

Radha, P. B. ;

Regan, S. P. ;

Sangster, T. C. ;

Froula, D. H. .

PHYSICS OF PLASMAS, 2016, 23 (05)

[5] EFFECT OF LASER ILLUMINATION NONUNIFORMITY ON THE ANALYSIS OF TIME-RESOLVED X-RAY MEASUREMENTS IN UV-SPHERICAL TRANSPORT EXPERIMENTS [J].

DELETTREZ, J ;

EPSTEIN, R ;

RICHARDSON, MC ;

JAANIMAGI, PA ;

HENKE, BL .

PHYSICAL REVIEW A, 1987, 36 (08) :3926-3934

[6] DOPPLER-SHIFT OF LASER-LIGHT REFLECTED FROM EXPANDING PLASMAS [J].

DEWANDRE, T ;

ALBRITTON, JR ;

WILLIAMS, EA .

PHYSICS OF FLUIDS, 1981, 24 (03) :528-536

[7] Mitigation of cross-beam energy transfer in symmetric implosions on OMEGA using wavelength detuning [J].

Edgell, D. H. ;

Follett, R. K. ;

Igumenshchev, I. V. ;

Myatt, J. F. ;

Shaw, J. G. ;

Froula, D. H. .

PHYSICS OF PLASMAS, 2017, 24 (06)

[8] Full-wave and ray-based modeling of cross-beam energy transfer between laser beams with distributed phase plates and polarization smoothing [J].

Follett, R. K. ;

Edgell, D. H. ;

Froula, D. H. ;

Goncharov, V. N. ;

Igumenshchev, I. V. ;

Shaw, J. G. ;

Myatt, J. F. .

PHYSICS OF PLASMAS, 2017, 24 (10)

[9] Improving the hot-spot pressure and demonstrating ignition hydrodynamic equivalence in cryogenic deuterium-tritium implosions on OMEGA [J].

Goncharov, V. N. ;

Sangster, T. C. ;

Betti, R. ;

Boehly, T. R. ;

Bonino, M. J. ;

Collins, T. J. B. ;

Craxton, R. S. ;

Delettrez, J. A. ;

Edgell, D. H. ;

Epstein, R. ;

Follett, R. K. ;

Forrest, C. J. ;

Froula, D. H. ;

Glebov, V. Yu ;

Harding, D. R. ;

Henchen, R. J. ;

Hu, S. X. ;

Igumenshchev, I. V. ;

Janezic, R. ;

Kelly, J. H. ;

Kessler, T. J. ;

Kosc, T. Z. ;

Loucks, S. J. ;

Marozas, J. A. ;

Marshall, F. J. ;

Maximov, A. V. ;

McCrory, R. L. ;

McKenty, P. W. ;

Meyerhofer, D. D. ;

Michel, D. T. ;

Myatt, J. F. ;

Nora, R. ;

Radha, P. B. ;

Regan, S. P. ;

Seka, W. ;

Shmayda, W. T. ;

Short, R. W. ;

Shvydky, A. ;

Skupsky, S. ;

Stoeckl, C. ;

Yaakobi, B. ;

Frenje, J. A. ;

Gatu-Johnson, M. ;

Petrasso, R. D. ;

Casey, D. T. .

PHYSICS OF PLASMAS, 2014, 21 (05)

[10]

Huba J. D., 1994, NRLPU679094265

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