Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA

P. B. Radha; T. J.B. Collins; J. A. Delettrez; Y. Elbaz; R. Epstein; V. Yu Glebov; V. N. Goncharov; R. L. Keck; J. P. Knauer; J. A. Marozas; F. J. Marshall; R. L. Mccrory; P. W. Mckenty; D. D. Meyerhofer; S. P. Regan; T. C. Sangster; W. Seka; D. Shvarts; S. Skupsky; Y. Srebro; C. Stoeckl

doi:10.1063/1.1882333

Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA

P. B. Radha, T. J.B. Collins, J. A. Delettrez, Y. Elbaz, R. Epstein, V. Yu Glebov, V. N. Goncharov, R. L. Keck, J. P. Knauer, J. A. Marozas, F. J. Marshall, R. L. Mccrory, P. W. Mckenty, D. D. Meyerhofer, S. P. Regan, T. C. Sangster, W. Seka, D. Shvarts, S. Skupsky, Y. SrebroC. Stoeckl

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Abstract

Direct-drive, plastic shells imploded on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] with a 1 ns square pulse are simulated using the multidimensional hydrodynamic code DRACO in yield degradation in "thin" shells is primarily caused by shell breakup during the acceleration phase due to short-wavelength (ℓ>50, where ℓ is the Legendre mode number) perturbation growth, whereas "thick" shell performance is influenced primarily by long and intermediate modes (ℓ≤50). Simulation yields, temporal history of neutron production, areal densities, and x-ray images of the core compare well with experimental observations. In particular, the thin-shell neutron production history falls off less steeply than one-dimensional predictions due to shell-breakup-induced undercompression and delayed stagnation. Thicker, more-stable shells show burn truncation due to instability-induced mass flow into the colder bubbles. Estimates of small-scale mix indicate that turbulent mixing does not influence primary neutron yields.

Original language	English
Article number	056307
Pages (from-to)	1-10
Number of pages	10
Journal	Physics of Plasmas
Volume	12
Issue number	5
DOIs	https://doi.org/10.1063/1.1882333
State	Published - May 2005
Externally published	Yes

Funding

Funders	Funder number
U.S. Department of Energy Office of Inertial Confinement Fusion

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Radha, P. B., Collins, T. J. B., Delettrez, J. A., Elbaz, Y., Epstein, R., Glebov, V. Y., Goncharov, V. N., Keck, R. L., Knauer, J. P., Marozas, J. A., Marshall, F. J., Mccrory, R. L., Mckenty, P. W., Meyerhofer, D. D., Regan, S. P., Sangster, T. C., Seka, W., Shvarts, D., Skupsky, S., ... Stoeckl, C. (2005). Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA. Physics of Plasmas, 12(5), 1-10. Article 056307. https://doi.org/10.1063/1.1882333

@article{2f8ed0e743d9439985fedc07dc612877,

title = "Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA",

abstract = "Direct-drive, plastic shells imploded on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] with a 1 ns square pulse are simulated using the multidimensional hydrodynamic code DRACO in yield degradation in {"}thin{"} shells is primarily caused by shell breakup during the acceleration phase due to short-wavelength (ℓ>50, where ℓ is the Legendre mode number) perturbation growth, whereas {"}thick{"} shell performance is influenced primarily by long and intermediate modes (ℓ≤50). Simulation yields, temporal history of neutron production, areal densities, and x-ray images of the core compare well with experimental observations. In particular, the thin-shell neutron production history falls off less steeply than one-dimensional predictions due to shell-breakup-induced undercompression and delayed stagnation. Thicker, more-stable shells show burn truncation due to instability-induced mass flow into the colder bubbles. Estimates of small-scale mix indicate that turbulent mixing does not influence primary neutron yields.",

author = "Radha, {P. B.} and Collins, {T. J.B.} and Delettrez, {J. A.} and Y. Elbaz and R. Epstein and Glebov, {V. Yu} and Goncharov, {V. N.} and Keck, {R. L.} and Knauer, {J. P.} and Marozas, {J. A.} and Marshall, {F. J.} and Mccrory, {R. L.} and Mckenty, {P. W.} and Meyerhofer, {D. D.} and Regan, {S. P.} and Sangster, {T. C.} and W. Seka and D. Shvarts and S. Skupsky and Y. Srebro and C. Stoeckl",

note = "Funding Information: This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC52-92SF19460, the University of Rochester, and the New York State Energy Research and Development Authority. The support of DOE does not constitute an endorsement by DOE of the views expressed in this paper. ",

year = "2005",

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doi = "10.1063/1.1882333",

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volume = "12",

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Radha, PB, Collins, TJB, Delettrez, JA, Elbaz, Y, Epstein, R, Glebov, VY, Goncharov, VN, Keck, RL, Knauer, JP, Marozas, JA, Marshall, FJ, Mccrory, RL, Mckenty, PW, Meyerhofer, DD, Regan, SP, Sangster, TC, Seka, W, Shvarts, D, Skupsky, S, Srebro, Y & Stoeckl, C 2005, 'Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA', Physics of Plasmas, vol. 12, no. 5, 056307, pp. 1-10. https://doi.org/10.1063/1.1882333

TY - JOUR

T1 - Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA

AU - Radha, P. B.

AU - Collins, T. J.B.

AU - Delettrez, J. A.

AU - Elbaz, Y.

AU - Epstein, R.

AU - Glebov, V. Yu

AU - Goncharov, V. N.

AU - Keck, R. L.

AU - Knauer, J. P.

AU - Marozas, J. A.

AU - Marshall, F. J.

AU - Mccrory, R. L.

AU - Mckenty, P. W.

AU - Meyerhofer, D. D.

AU - Regan, S. P.

AU - Sangster, T. C.

AU - Seka, W.

AU - Shvarts, D.

AU - Skupsky, S.

AU - Srebro, Y.

AU - Stoeckl, C.

N1 - Funding Information: This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC52-92SF19460, the University of Rochester, and the New York State Energy Research and Development Authority. The support of DOE does not constitute an endorsement by DOE of the views expressed in this paper.

PY - 2005/5

Y1 - 2005/5

N2 - Direct-drive, plastic shells imploded on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] with a 1 ns square pulse are simulated using the multidimensional hydrodynamic code DRACO in yield degradation in "thin" shells is primarily caused by shell breakup during the acceleration phase due to short-wavelength (ℓ>50, where ℓ is the Legendre mode number) perturbation growth, whereas "thick" shell performance is influenced primarily by long and intermediate modes (ℓ≤50). Simulation yields, temporal history of neutron production, areal densities, and x-ray images of the core compare well with experimental observations. In particular, the thin-shell neutron production history falls off less steeply than one-dimensional predictions due to shell-breakup-induced undercompression and delayed stagnation. Thicker, more-stable shells show burn truncation due to instability-induced mass flow into the colder bubbles. Estimates of small-scale mix indicate that turbulent mixing does not influence primary neutron yields.

AB - Direct-drive, plastic shells imploded on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] with a 1 ns square pulse are simulated using the multidimensional hydrodynamic code DRACO in yield degradation in "thin" shells is primarily caused by shell breakup during the acceleration phase due to short-wavelength (ℓ>50, where ℓ is the Legendre mode number) perturbation growth, whereas "thick" shell performance is influenced primarily by long and intermediate modes (ℓ≤50). Simulation yields, temporal history of neutron production, areal densities, and x-ray images of the core compare well with experimental observations. In particular, the thin-shell neutron production history falls off less steeply than one-dimensional predictions due to shell-breakup-induced undercompression and delayed stagnation. Thicker, more-stable shells show burn truncation due to instability-induced mass flow into the colder bubbles. Estimates of small-scale mix indicate that turbulent mixing does not influence primary neutron yields.

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Multidimensional analysis of direct-drive, plastic-shell implosions on OMEGA

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