Two-dimensional simulations of plastic-shell, direct-drive implosions on OMEGA

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

doi:10.1063/1.1857530

Two-dimensional simulations of plastic-shell, direct-drive implosions on OMEGA

P. B. Radha, V. N. Goncharov, T. J.B. Collins, J. A. Delettrez, Y. Elbaz, V. Yu Glebov, R. L. Keck, D. E. Keller, J. P. Knauer, J. A. Marozas, F. J. Marshall, P. W. McKenty, D. D. Meyerhofer, S. P. Regan, T. C. Sangster, D. Shvarts, S. Skupsky, Y. Srebro, R. P.J. Town, C. Stoeckl

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Abstract

Multidimensional hydrodynamic properties of high-adiabat direct-drive plastic-shell implosions on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] are investigated using the multidimensional hydrodynamic code, DRACO [D. Keller, Bull. Am. Phys. Soc. 44, 37 (1999)]. Multimode simulations including the effects of nonuniform illumination and target roughness indicate that shell stability during the acceleration phase plays a critical role in determining target performance. For thick shells that remain integral during the acceleration phase, target yields are significantly reduced by the combination of the long-wavelength (ℓ<10) modes due to surface roughness and beam imbalance and the intermediate modes (20≤ℓ≤50) due to single-beam nonuniformities. The neutron-production rate for these thick shells truncates relative to one-dimensional (1D) predictions. The yield degradation in the thin shells is mainly due to shell breakup at short wavelengths (λ~Δ, where Δ is the in-flight shell thickness). The neutron-rate curves for the thinner shells have significantly lower amplitudes and a fall-off that is less steep than 1D rates. DRACO simulation results are consistent with experimental observations.

Original language	English
Article number	032702
Pages (from-to)	1-18
Number of pages	18
Journal	Physics of Plasmas
Volume	12
Issue number	3
DOIs	https://doi.org/10.1063/1.1857530
State	Published - 25 Apr 2005
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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Radha, P. B., Goncharov, V. N., Collins, T. J. B., Delettrez, J. A., Elbaz, Y., Glebov, V. Y., Keck, R. L., Keller, D. E., Knauer, J. P., Marozas, J. A., Marshall, F. J., McKenty, P. W., Meyerhofer, D. D., Regan, S. P., Sangster, T. C., Shvarts, D., Skupsky, S., Srebro, Y., Town, R. P. J., & Stoeckl, C. (2005). Two-dimensional simulations of plastic-shell, direct-drive implosions on OMEGA. Physics of Plasmas, 12(3), 1-18. Article 032702. https://doi.org/10.1063/1.1857530

@article{b33c464caac1464ca9a77168eb2a21ba,

title = "Two-dimensional simulations of plastic-shell, direct-drive implosions on OMEGA",

abstract = "Multidimensional hydrodynamic properties of high-adiabat direct-drive plastic-shell implosions on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] are investigated using the multidimensional hydrodynamic code, DRACO [D. Keller, Bull. Am. Phys. Soc. 44, 37 (1999)]. Multimode simulations including the effects of nonuniform illumination and target roughness indicate that shell stability during the acceleration phase plays a critical role in determining target performance. For thick shells that remain integral during the acceleration phase, target yields are significantly reduced by the combination of the long-wavelength (ℓ<10) modes due to surface roughness and beam imbalance and the intermediate modes (20≤ℓ≤50) due to single-beam nonuniformities. The neutron-production rate for these thick shells truncates relative to one-dimensional (1D) predictions. The yield degradation in the thin shells is mainly due to shell breakup at short wavelengths (λ~Δ, where Δ is the in-flight shell thickness). The neutron-rate curves for the thinner shells have significantly lower amplitudes and a fall-off that is less steep than 1D rates. DRACO simulation results are consistent with experimental observations.",

author = "Radha, {P. B.} and Goncharov, {V. N.} and Collins, {T. J.B.} and Delettrez, {J. A.} and Y. Elbaz and Glebov, {V. Yu} and Keck, {R. L.} and Keller, {D. E.} and Knauer, {J. P.} and Marozas, {J. A.} and Marshall, {F. J.} and McKenty, {P. W.} and Meyerhofer, {D. D.} and Regan, {S. P.} and Sangster, {T. C.} and D. Shvarts and S. Skupsky and Y. Srebro and Town, {R. P.J.} 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. This work was supported in part by LLE (Contract No. PO412163G) with the University of Wisconsin for the implementation of the PetSc Libraries in DRACO .",

year = "2005",

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day = "25",

doi = "10.1063/1.1857530",

language = "English",

volume = "12",

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Radha, PB, Goncharov, VN, Collins, TJB, Delettrez, JA, Elbaz, Y, Glebov, VY, Keck, RL, Keller, DE, Knauer, JP, Marozas, JA, Marshall, FJ, McKenty, PW, Meyerhofer, DD, Regan, SP, Sangster, TC, Shvarts, D, Skupsky, S, Srebro, Y, Town, RPJ & Stoeckl, C 2005, 'Two-dimensional simulations of plastic-shell, direct-drive implosions on OMEGA', Physics of Plasmas, vol. 12, no. 3, 032702, pp. 1-18. https://doi.org/10.1063/1.1857530

TY - JOUR

T1 - Two-dimensional simulations of plastic-shell, direct-drive implosions on OMEGA

AU - Radha, P. B.

AU - Goncharov, V. N.

AU - Collins, T. J.B.

AU - Delettrez, J. A.

AU - Elbaz, Y.

AU - Glebov, V. Yu

AU - Keck, R. L.

AU - Keller, D. E.

AU - Knauer, J. P.

AU - Marozas, J. A.

AU - Marshall, F. J.

AU - McKenty, P. W.

AU - Meyerhofer, D. D.

AU - Regan, S. P.

AU - Sangster, T. C.

AU - Shvarts, D.

AU - Skupsky, S.

AU - Srebro, Y.

AU - Town, R. P.J.

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. This work was supported in part by LLE (Contract No. PO412163G) with the University of Wisconsin for the implementation of the PetSc Libraries in DRACO .

PY - 2005/4/25

Y1 - 2005/4/25

N2 - Multidimensional hydrodynamic properties of high-adiabat direct-drive plastic-shell implosions on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] are investigated using the multidimensional hydrodynamic code, DRACO [D. Keller, Bull. Am. Phys. Soc. 44, 37 (1999)]. Multimode simulations including the effects of nonuniform illumination and target roughness indicate that shell stability during the acceleration phase plays a critical role in determining target performance. For thick shells that remain integral during the acceleration phase, target yields are significantly reduced by the combination of the long-wavelength (ℓ<10) modes due to surface roughness and beam imbalance and the intermediate modes (20≤ℓ≤50) due to single-beam nonuniformities. The neutron-production rate for these thick shells truncates relative to one-dimensional (1D) predictions. The yield degradation in the thin shells is mainly due to shell breakup at short wavelengths (λ~Δ, where Δ is the in-flight shell thickness). The neutron-rate curves for the thinner shells have significantly lower amplitudes and a fall-off that is less steep than 1D rates. DRACO simulation results are consistent with experimental observations.

AB - Multidimensional hydrodynamic properties of high-adiabat direct-drive plastic-shell implosions on the OMEGA laser system [T. R. Boehly, Opt. Commun. 133, 495 (1997)] are investigated using the multidimensional hydrodynamic code, DRACO [D. Keller, Bull. Am. Phys. Soc. 44, 37 (1999)]. Multimode simulations including the effects of nonuniform illumination and target roughness indicate that shell stability during the acceleration phase plays a critical role in determining target performance. For thick shells that remain integral during the acceleration phase, target yields are significantly reduced by the combination of the long-wavelength (ℓ<10) modes due to surface roughness and beam imbalance and the intermediate modes (20≤ℓ≤50) due to single-beam nonuniformities. The neutron-production rate for these thick shells truncates relative to one-dimensional (1D) predictions. The yield degradation in the thin shells is mainly due to shell breakup at short wavelengths (λ~Δ, where Δ is the in-flight shell thickness). The neutron-rate curves for the thinner shells have significantly lower amplitudes and a fall-off that is less steep than 1D rates. DRACO simulation results are consistent with experimental observations.

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DO - 10.1063/1.1857530

M3 - Article

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SN - 1070-664X

VL - 12

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JO - Physics of Plasmas

JF - Physics of Plasmas

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ER -

Two-dimensional simulations of plastic-shell, direct-drive implosions on OMEGA

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