Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping

H. F. Robey; V. A. Smalyuk; J. L. Milovich; T. Döppner; D. T. Casey; K. L. Baker; J. L. Peterson; B. Bachmann; L. F. Berzak Hopkins; E. Bond; J. A. Caggiano; D. A. Callahan; P. M. Celliers; C. Cerjan; D. S. Clark; S. N. Dixit; M. J. Edwards; N. Gharibyan; S. W. Haan; B. A. Hammel; A. V. Hamza; R. Hatarik; O. A. Hurricane; K. S. Jancaitis; O. S. Jones; G. D. Kerbel; J. J. Kroll; K. N. Lafortune; O. L. Landen; T. Ma; M. M. Marinak; B. J. Macgowan; A. G. Macphee; A. Pak; M. Patel; P. K. Patel; L. J. Perkins; D. B. Sayre; S. M. Sepke; B. K. Spears; R. Tommasini; C. R. Weber; C. C. Widmayer; C. Yeamans; E. Giraldez; D. Hoover; A. Nikroo; M. Hohenberger; M. Gatu Johnson

doi:10.1063/1.4944821

Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping

H. F. Robey, V. A. Smalyuk, J. L. Milovich, T. Döppner, D. T. Casey, K. L. Baker, J. L. Peterson, B. Bachmann, L. F. Berzak Hopkins, E. Bond, J. A. Caggiano, D. A. Callahan, P. M. Celliers, C. Cerjan, D. S. Clark, S. N. Dixit, M. J. Edwards, N. Gharibyan, S. W. Haan, B. A. HammelA. V. Hamza, R. Hatarik, O. A. Hurricane, K. S. Jancaitis, O. S. Jones, G. D. Kerbel, J. J. Kroll, K. N. Lafortune, O. L. Landen, T. Ma, M. M. Marinak, B. J. Macgowan, A. G. Macphee, A. Pak, M. Patel, P. K. Patel, L. J. Perkins, D. B. Sayre, S. M. Sepke, B. K. Spears, R. Tommasini, C. R. Weber, C. C. Widmayer, C. Yeamans, E. Giraldez, D. Hoover, A. Nikroo, M. Hohenberger, M. Gatu Johnson

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Abstract

A series of indirectly driven capsule implosions has been performed on the National Ignition Facility to assess the relative contributions of ablation-front instability growth vs. fuel compression on implosion performance. Laser pulse shapes for both low and high-foot pulses were modified to vary ablation-front growth and fuel adiabat, separately and controllably. Three principal conclusions are drawn from this study: (1) It is shown that reducing ablation-front instability growth in low-foot implosions results in a substantial (3-10X) increase in neutron yield with no loss of fuel compression. (2) It is shown that reducing the fuel adiabat in high-foot implosions results in a significant (36%) increase in fuel compression together with a small (10%) increase in neutron yield. (3) Increased electron preheat at higher laser power in high-foot implosions, however, appears to offset the gain in compression achieved by adiabat-shaping at lower power. These results taken collectively bridge the space between the higher compression low-foot results and the higher yield high-foot results.

Original language	English (US)
Article number	056303
Journal	Physics of Plasmas
Volume	23
Issue number	5
DOIs	https://doi.org/10.1063/1.4944821
State	Published - May 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.4944821

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Robey, H. F., Smalyuk, V. A., Milovich, J. L., Döppner, T., Casey, D. T., Baker, K. L., Peterson, J. L., Bachmann, B., Berzak Hopkins, L. F., Bond, E., Caggiano, J. A., Callahan, D. A., Celliers, P. M., Cerjan, C., Clark, D. S., Dixit, S. N., Edwards, M. J., Gharibyan, N., Haan, S. W., ... Gatu Johnson, M. (2016). Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping. Physics of Plasmas, 23(5), Article 056303. https://doi.org/10.1063/1.4944821

@article{721dbcff71d54dea8feb3ce25eb428e0,

title = "Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping",

abstract = "A series of indirectly driven capsule implosions has been performed on the National Ignition Facility to assess the relative contributions of ablation-front instability growth vs. fuel compression on implosion performance. Laser pulse shapes for both low and high-foot pulses were modified to vary ablation-front growth and fuel adiabat, separately and controllably. Three principal conclusions are drawn from this study: (1) It is shown that reducing ablation-front instability growth in low-foot implosions results in a substantial (3-10X) increase in neutron yield with no loss of fuel compression. (2) It is shown that reducing the fuel adiabat in high-foot implosions results in a significant (36\%) increase in fuel compression together with a small (10\%) increase in neutron yield. (3) Increased electron preheat at higher laser power in high-foot implosions, however, appears to offset the gain in compression achieved by adiabat-shaping at lower power. These results taken collectively bridge the space between the higher compression low-foot results and the higher yield high-foot results.",

author = "Robey, \{H. F.\} and Smalyuk, \{V. A.\} and Milovich, \{J. L.\} and T. D{\"o}ppner and Casey, \{D. T.\} and Baker, \{K. L.\} and Peterson, \{J. L.\} and B. Bachmann and \{Berzak Hopkins\}, \{L. F.\} and E. Bond and Caggiano, \{J. A.\} and Callahan, \{D. A.\} and Celliers, \{P. M.\} and C. Cerjan and Clark, \{D. S.\} and Dixit, \{S. N.\} and Edwards, \{M. J.\} and N. Gharibyan and Haan, \{S. W.\} and Hammel, \{B. A.\} and Hamza, \{A. V.\} and R. Hatarik and Hurricane, \{O. A.\} and Jancaitis, \{K. S.\} and Jones, \{O. S.\} and Kerbel, \{G. D.\} and Kroll, \{J. J.\} and Lafortune, \{K. N.\} and Landen, \{O. L.\} and T. Ma and Marinak, \{M. M.\} and Macgowan, \{B. J.\} and Macphee, \{A. G.\} and A. Pak and M. Patel and Patel, \{P. K.\} and Perkins, \{L. J.\} and Sayre, \{D. B.\} and Sepke, \{S. M.\} and Spears, \{B. K.\} and R. Tommasini and Weber, \{C. R.\} and Widmayer, \{C. C.\} and C. Yeamans and E. Giraldez and D. Hoover and A. Nikroo and M. Hohenberger and \{Gatu Johnson\}, M.",

note = "Publisher Copyright: {\textcopyright} 2016 AIP Publishing LLC.",

year = "2016",

month = may,

doi = "10.1063/1.4944821",

language = "English (US)",

volume = "23",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "5",

}

Robey, HF, Smalyuk, VA, Milovich, JL, Döppner, T, Casey, DT, Baker, KL, Peterson, JL, Bachmann, B, Berzak Hopkins, LF, Bond, E, Caggiano, JA, Callahan, DA, Celliers, PM, Cerjan, C, Clark, DS, Dixit, SN, Edwards, MJ, Gharibyan, N, Haan, SW, Hammel, BA, Hamza, AV, Hatarik, R, Hurricane, OA, Jancaitis, KS, Jones, OS, Kerbel, GD, Kroll, JJ, Lafortune, KN, Landen, OL, Ma, T, Marinak, MM, Macgowan, BJ, Macphee, AG, Pak, A, Patel, M, Patel, PK, Perkins, LJ, Sayre, DB, Sepke, SM, Spears, BK, Tommasini, R, Weber, CR, Widmayer, CC, Yeamans, C, Giraldez, E, Hoover, D, Nikroo, A, Hohenberger, M & Gatu Johnson, M 2016, 'Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping', Physics of Plasmas, vol. 23, no. 5, 056303. https://doi.org/10.1063/1.4944821

TY - JOUR

T1 - Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping

AU - Robey, H. F.

AU - Smalyuk, V. A.

AU - Milovich, J. L.

AU - Döppner, T.

AU - Casey, D. T.

AU - Baker, K. L.

AU - Peterson, J. L.

AU - Bachmann, B.

AU - Berzak Hopkins, L. F.

AU - Bond, E.

AU - Caggiano, J. A.

AU - Callahan, D. A.

AU - Celliers, P. M.

AU - Cerjan, C.

AU - Clark, D. S.

AU - Dixit, S. N.

AU - Edwards, M. J.

AU - Gharibyan, N.

AU - Haan, S. W.

AU - Hammel, B. A.

AU - Hamza, A. V.

AU - Hatarik, R.

AU - Hurricane, O. A.

AU - Jancaitis, K. S.

AU - Jones, O. S.

AU - Kerbel, G. D.

AU - Kroll, J. J.

AU - Lafortune, K. N.

AU - Landen, O. L.

AU - Ma, T.

AU - Marinak, M. M.

AU - Macgowan, B. J.

AU - Macphee, A. G.

AU - Pak, A.

AU - Patel, M.

AU - Patel, P. K.

AU - Perkins, L. J.

AU - Sayre, D. B.

AU - Sepke, S. M.

AU - Spears, B. K.

AU - Tommasini, R.

AU - Weber, C. R.

AU - Widmayer, C. C.

AU - Yeamans, C.

AU - Giraldez, E.

AU - Hoover, D.

AU - Nikroo, A.

AU - Hohenberger, M.

AU - Gatu Johnson, M.

PY - 2016/5

Y1 - 2016/5

N2 - A series of indirectly driven capsule implosions has been performed on the National Ignition Facility to assess the relative contributions of ablation-front instability growth vs. fuel compression on implosion performance. Laser pulse shapes for both low and high-foot pulses were modified to vary ablation-front growth and fuel adiabat, separately and controllably. Three principal conclusions are drawn from this study: (1) It is shown that reducing ablation-front instability growth in low-foot implosions results in a substantial (3-10X) increase in neutron yield with no loss of fuel compression. (2) It is shown that reducing the fuel adiabat in high-foot implosions results in a significant (36%) increase in fuel compression together with a small (10%) increase in neutron yield. (3) Increased electron preheat at higher laser power in high-foot implosions, however, appears to offset the gain in compression achieved by adiabat-shaping at lower power. These results taken collectively bridge the space between the higher compression low-foot results and the higher yield high-foot results.

AB - A series of indirectly driven capsule implosions has been performed on the National Ignition Facility to assess the relative contributions of ablation-front instability growth vs. fuel compression on implosion performance. Laser pulse shapes for both low and high-foot pulses were modified to vary ablation-front growth and fuel adiabat, separately and controllably. Three principal conclusions are drawn from this study: (1) It is shown that reducing ablation-front instability growth in low-foot implosions results in a substantial (3-10X) increase in neutron yield with no loss of fuel compression. (2) It is shown that reducing the fuel adiabat in high-foot implosions results in a significant (36%) increase in fuel compression together with a small (10%) increase in neutron yield. (3) Increased electron preheat at higher laser power in high-foot implosions, however, appears to offset the gain in compression achieved by adiabat-shaping at lower power. These results taken collectively bridge the space between the higher compression low-foot results and the higher yield high-foot results.

UR - https://www.scopus.com/pages/publications/84963854354

UR - https://www.scopus.com/inward/citedby.url?scp=84963854354&partnerID=8YFLogxK

U2 - 10.1063/1.4944821

DO - 10.1063/1.4944821

M3 - Article

AN - SCOPUS:84963854354

SN - 1070-664X

VL - 23

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5

M1 - 056303

ER -

Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping

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