Theoretical quantification of shock-timing sensitivities for direct-drive inertial confinement fusion implosions on OMEGA

Cao, D.; Boehly, T. R.; Gregor, M. C.; Polsin, D. N.; Davis, A. K.; Radha, P. B.; Regan, S. P.; Goncharov, V. N.

doi:10.1063/1.5022992

Title: Theoretical quantification of shock-timing sensitivities for direct-drive inertial confinement fusion implosions on OMEGA

Journal Article · Wed May 16 00:00:00 EDT 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5022992· OSTI ID:1457362

Cao, D. ^[1]; Boehly, T. R. ^[1]; Gregor, M. C. ^[1];

^[1];

^[1]; Radha, P. B. ^[1]; Regan, S. P. ^[1]; Goncharov, V. N. ^[1]

Univ. of Rochester, Rochester, NY (United States)

Using temporally shaped laser pulses, multiple shocks can be launched in direct-drive inertial confinement fusion implosion experiments to set the shell on a desired isentrope or adiabat. The velocity of the first shock and the times at which subsequent shocks catch up to it are measured through the VISAR diagnostic on OMEGA. Simulations reproduce these velocity and shock-merger time measurements when using laser pulses designed for setting mid-adiabat (α ~ 3) implosions, but agreement degrades for lower-adiabat (α ~ 1) designs. Several possibilities for this difference are studied: errors in placing the target at the center of irradiation (target offset), variations in energy between the different incident beams (power imbalance), and errors in modeling the laser energy coupled into the capsule. Simulation results indicate that shock timing is most sensitive to details of the density and temperature profiles in the coronal plasma, which influences the laser energy coupled into the target, and only marginally sensitive to target offset and beam power imbalance. A new technique under development to infer coronal profiles using x-ray self-emission imaging can be applied to the pulse shapes used in shock-timing experiments. In conclusion, this will help identify improved physics models to implement in codes and consequently enhance shock-timing predictive capability for low-adiabat pulses.

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Research Organization:: Univ. of Rochester, NY (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0001944

OSTI ID:: 1457362

Alternate ID(s):: OSTI ID: 1437337

Journal Information:: Physics of Plasmas, Vol. 25, Issue 5; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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References (18)

Line-imaging velocimeter for shock diagnostics at the OMEGA laser facility Celliers, P. M.; Bradley, D. K.; Collins, G. W. Review of Scientific Instruments, Vol. 75, Issue 11 https://doi.org/10.1063/1.1807008	journal	November 2004
Direct-drive, cryogenic target implosions on OMEGA Marshall, F. J.; Craxton, R. S.; Delettrez, J. A. Physics of Plasmas, Vol. 12, Issue 5 https://doi.org/10.1063/1.1873832	journal	May 2005
Multiple spherically converging shock waves in liquid deuterium Boehly, T. R.; Goncharov, V. N.; Seka, W. Physics of Plasmas, Vol. 18, Issue 9 https://doi.org/10.1063/1.3640805	journal	September 2011
Effect of laser illumination nonuniformity on the analysis of time-resolved x-ray measurements in uv spherical transport experiments Delettrez, J.; Epstein, R.; Richardson, M. C. Physical Review A, Vol. 36, Issue 8 https://doi.org/10.1103/PhysRevA.36.3926	journal	October 1987
Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA Radha, P. B.; Collins, T. J. B.; Delettrez, J. A. Physics of Plasmas, Vol. 12, Issue 5 https://doi.org/10.1063/1.1882333	journal	May 2005
Laser interferometer for measuring high velocities of any reflecting surface Barker, L. M.; Hollenbach, R. E. Journal of Applied Physics, Vol. 43, Issue 11 https://doi.org/10.1063/1.1660986	journal	November 1972
Shock timing technique for the National Ignition Facility Munro, David H.; Celliers, Peter M.; Collins, Gilbert W. Physics of Plasmas, Vol. 8, Issue 5 https://doi.org/10.1063/1.1347037	journal	May 2001
First-principles equation-of-state table of deuterium for inertial confinement fusion applications Hu, S. X.; Militzer, B.; Goncharov, V. N. Physical Review B, Vol. 84, Issue 22 https://doi.org/10.1103/PhysRevB.84.224109	journal	December 2011
The instability of liquid surfaces when accelerated in a direction perpendicular to their planes. I Taylor, Geoffrey Ingram Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, Vol. 201, Issue 1065, p. 192-196 https://doi.org/10.1098/rspa.1950.0052	journal	March 1950
Stagnation Pressure of Imploding Shells and Ignition Energy Scaling of Inertial Confinement Fusion Targets Kemp, A.; Meyer-ter-Vehn, J.; Atzeni, S. Physical Review Letters, Vol. 86, Issue 15 https://doi.org/10.1103/PhysRevLett.86.3336	journal	April 2001
Direct-drive laser fusion: Status and prospects Bodner, Stephen E.; Colombant, Denis G.; Gardner, John H. Physics of Plasmas, Vol. 5, Issue 5, p. 1901-1918 https://doi.org/10.1063/1.872861	journal	May 1998
The Physics of Inertial Fusion Atzeni, Stefano; Meyer-ter-Vehn, Jürgen https://doi.org/10.1093/acprof:oso/9780198562641.001.0001	book	January 2004
Early stage of implosion in inertial confinement fusion: Shock timing and perturbation evolution Goncharov, V. N.; Gotchev, O. V.; Vianello, E. Physics of Plasmas, Vol. 13, Issue 1 https://doi.org/10.1063/1.2162803	journal	January 2006
Performance of direct-drive cryogenic targets on OMEGA Goncharov, V. N.; Sangster, T. C.; Radha, P. B. Physics of Plasmas, Vol. 15, Issue 5 https://doi.org/10.1063/1.2856551	journal	May 2008
Initial performance results of the OMEGA laser system Boehly, T. R.; Brown, D. L.; Craxton, R. S. Optics Communications, Vol. 133, Issue 1-6 https://doi.org/10.1016/S0030-4018(96)00325-2	journal	January 1997
Shock timing experiments on the National Ignition Facility: Initial results and comparison with simulation Robey, H. F.; Boehly, T. R.; Celliers, P. M. Physics of Plasmas, Vol. 19, Issue 4 https://doi.org/10.1063/1.3694122	journal	April 2012
Three-dimensional modeling of direct-drive cryogenic implosions on OMEGA Igumenshchev, I. V.; Goncharov, V. N.; Marshall, F. J. Physics of Plasmas, Vol. 23, Issue 5 https://doi.org/10.1063/1.4948418	journal	May 2016
Stagnation Pressure of Imploding Shells and Ignition Energy Scaling of Inertial Confinement Fusion Targets Atzeni, S.; Kemp, A.; Meyer-Ter-Vehn, J. The American Physical Society https://doi.org/10.17877/de290r-2144	text	January 2001

Cited By (3)

Simulated refraction-enhanced X-ray radiography of laser-driven shocks Kar, Arnab; Boehly, T. R.; Radha, P. B. Physics of Plasmas, Vol. 26, Issue 3 https://doi.org/10.1063/1.5084968	journal	March 2019
Study of high-Z-coated ignition target by detailed configuration accounting atomic physics for direct-drive inertial confinement fusion Qiao, Xiumei; Lan, Ke Plasma Physics and Controlled Fusion, Vol. 61, Issue 1 https://doi.org/10.1088/1361-6587/aae2dc	journal	November 2018
Simulated Refraction-Enhanced X-Ray Radiography of Laser-Driven Shocks Kar, Arnab; Boehly, T. R.; Radha, P. B. arXiv https://doi.org/10.48550/arxiv.1903.04020	text	January 2019

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