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342 results on '"Wilks, S. C."'

1. Review and meta-analysis of electron temperatures from high-intensity laser–solid interactions

Author

Rusby, D. R., primary, Kemp, A. J., additional, Wilks, S. C., additional, Miller, K. G., additional, Sherlock, M., additional, Chen, H., additional, Simpson, R. A., additional, Mariscal, D. A., additional, Swanson, K., additional, Djordjević, B. Z., additional, Link, A. J., additional, Williams, G. J., additional, and Mackinnon, A. J., additional

Published
2024
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3. QED-driven laser absorption

Author

Levy, M. C., Blackburn, T. G., Ratan, N., Sadler, J., Ridgers, C. P., Kasim, M., Ceurvorst, L., Holloway, J., Baring, M. G., Bell, A. R., Glenzer, S. H., Gregori, G., Ilderton, A., Marklund, M., Tabak, M., and Wilks, S. C.

Subjects
Physics - Plasma Physics
Abstract

Absorption covers the physical processes which convert intense photon flux into energetic particles when a high-power laser illuminates optically-thick matter. It underpins important petawatt-scale applications today, e.g., medical-quality proton beam production. However, development of ultra-high-field applications has been hindered since no study so far has described absorption throughout the entire transition from the classical to the quantum electrodynamical (QED) regime of plasma physics. Here we present a model of absorption that holds over an unprecedented six orders-of-magnitude in optical intensity and lays the groundwork for QED applications of laser-driven particle beams. We demonstrate 58% efficient \gamma-ray production at $1.8\times 10^{25}~\mathrm{W~ cm^{-2}}$ and the creation of an anti-matter source achieving $4\times 10^{24}\ \mathrm{positrons}\ \mathrm{cm^{-3}}$, $10^{6}~\times$ denser than of any known photonic scheme. These results will find applications in scaled laboratory probes of black hole and pulsar winds, \gamma-ray radiography for materials science and homeland security, and fundamental nuclear physics., Comment: 10 pages, 5 figures

Published
2016

5. Development of an Interpretive Simulation Tool for the Proton Radiography Technique

Author

Levy, M. C., Ryutov, D. D., Wilks, S. C., Ross, J. S., Huntington, C. M., Fiuza, F., Martinez, D. A., Kugland, N. L., Baring, M. G., and Park, H-. S.

Subjects
Physics - Plasma Physics
Abstract

Proton radiography is a useful diagnostic of high energy density (HED) plasmas under active theoretical and experimental development. In this paper we describe a new simulation tool that interacts realistic laser-driven point-like proton sources with three dimensional electromagnetic fields of arbitrary strength and structure and synthesizes the associated high resolution proton radiograph. The present tool's numerical approach captures all relevant physics effects, including effects related to the formation of caustics. Electromagnetic fields can be imported from PIC or hydrodynamic codes in a streamlined fashion, and a library of electromagnetic field `primitives' is also provided. This latter capability allows users to add a primitive, modify the field strength, rotate a primitive, and so on, while quickly generating a high resolution radiograph at each step. In this way, our tool enables the user to deconstruct features in a radiograph and interpret them in connection to specific underlying electromagnetic field elements. We show an example application of the tool in connection to experimental observations of the Weibel instability in counterstreaming plasmas, using $\sim 10^8$ particles generated from a realistic laser-driven point-like proton source, imaging fields which cover volumes of $\sim10 $ mm$^3$. Insights derived from this application show that the tool can support understanding of HED plasmas., Comment: Figures and tables related to the Appendix are included in the published journal article

Published
2014
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6. Kinematic Constraints on Absorption of Ultraintense Laser Light

Author

Levy, M. C., Wilks, S. C., Tabak, M., Libby, S. B., and Baring, M. G.

Subjects
Physics - Plasma Physics, Physics - Optics
Abstract

We derive upper and lower bounds on the absorption of ultraintense laser light by solids as a function of fundamental laser and plasma parameters. These limits emerge naturally from constrained optimization techniques applied to a generalization of the laser-solid interaction as a strongly-driven, relativistic, two degree of freedom Maxwell-Vlasov system. We demonstrate that the extrema and the phase-space-averaged absorption must always increase with intensity, and increase most rapidly when $10^{18} < I_L \ \lambda_L^2 < 10^{20}$ W $\mu$m$^2/$cm$^{2}$. Our results indicate that the fundamental empirical trend towards increasing fractional absorption with irradiance therefore reflects the underlying phase space constraints.

Published
2013

7. Focusing of Intense Subpicosecond Laser Pulses in Wedge Targets

Author

Levy, M. C., Kemp, A. J., Wilks, S. C., Divol, L., and Baring, M. G.

Subjects
Physics - Plasma Physics, Physics - Optics
Abstract

Two dimensional particle-in-cell simulations characterizing the interaction of ultraintense short pulse lasers in the range 10^{18} \leq I \leq 10^{20} W/cm^{2} with converging target geometries are presented. Seeking to examine intensity amplification in high-power laser systems, where focal spots are typically non-diffraction limited, we describe key dynamical features as the injected laser intensity and convergence angle of the target are systematically varied. We find that laser pulses are focused down to a wavelength with the peak intensity amplified by an order of magnitude beyond its vacuum value, and develop a simple model for how the peak location moves back towards the injection plane over time. This performance is sustained over hundreds of femtoseconds and scales to laser intensities beyond 10^{20} W/cm^{2} at 1 \mu m wavelength., Comment: 5 pages, 6 figures, accepted for publication in Physics of Plasmas

Published
2011
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9. Enhanced electron acceleration by high-intensity lasers in extended (confined) preplasma in cone targets

Author

Rusby, D. R., primary, Cochran, G. E., additional, Aghedo, A., additional, Albert, F., additional, Armstrong, C. D., additional, Haid, A., additional, Kemp, A. J., additional, Kerr, S. M., additional, King, P. M., additional, Lemos, N., additional, Manuel, M. J.-E., additional, Ma, T., additional, MacPhee, A. G., additional, Pagano, I., additional, Pak, A., additional, Scott, G. G., additional, Siders, C. W., additional, Simpson, R. A., additional, Sinclair, M., additional, Wilks, S. C., additional, Williams, G. J., additional, and Mackinnon, A. J., additional

Published
2023
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10. A flexible proton beam imaging energy spectrometer (PROBIES) for high repetition rate or single-shot high energy density (HED) experiments (invited)

Author

Mariscal, D. A., primary, Djordjević, B. Z., additional, Anirudh, R., additional, Bremer, T., additional, Campbell, P. C., additional, Feister, S., additional, Folsom, E., additional, Grace, E. S., additional, Hollinger, R., additional, Jacobs, S. A., additional, Kailkhura, B., additional, Kalantar, D., additional, Kemp, A. J., additional, Kim, J., additional, Kur, E., additional, Liu, S., additional, Ludwig, J., additional, Morrison, J., additional, Nedbailo, R., additional, Ose, N., additional, Park, J., additional, Rocca, J. J., additional, Scott, G. G., additional, Simpson, R. A., additional, Song, H., additional, Spears, B., additional, Sullivan, B., additional, Swanson, K. K., additional, Thiagarajan, J., additional, Wang, S., additional, Williams, G. J., additional, Wilks, S. C., additional, Wyatt, M., additional, Van Essen, B., additional, Zacharias, R., additional, Zeraouli, G., additional, Zhang, J., additional, and Ma, T., additional

Published
2023
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13. Commissioning and First User Experiments with ReLaX and XFEL Beam

Author

(0000-0002-7671-0901) Laso García, A., Arefiev, A., Kemp, A., Allen, C. H., Bähtz, C., Nagler, B., Palmer, C. A. J., Murphy, C. D., Spindloe, C., Brown, C. R. D., Neely, D., (0000-0002-6350-4180) Kraus, D., Marley, E., Hartouni, E. P., Fiuza, F., Grim, G. P., Cochran, G. E., (0000-0003-4400-1315) Schlenvoigt, H.-P., (0000-0003-0931-1350) Prencipe, I., Williams, J., Green, J., Eggert, J. H., (0000-0003-3926-409X) Zeil, K., Lancaster, K. L., Divol, L., (0000-0002-6914-4083) Gaus, L., (0000-0003-1184-2097) Huang, L., Schoelmerich, M., (0000-0001-6200-6406) Rehwald, M., Oliver, M., Rödel, M., Macdonald, M., (0000-0002-7162-7500) Smid, M., Makita, M., Nakatsutsumi, M., (0000-0001-6748-0422) Humphries, O. S., Neumayer, P. B., Mabey, P., Shepherd, R. L., Gray, R., Wilks, S. C., Le Pape, S., Kerr, S. M., Glenzer, S. H., Funk, S., Gales, S. G., (0000-0002-5845-000X) Cowan, T., White, T. G., (0000-0003-4861-5584) Kluge, T., Doeppner, T., (0000-0001-7986-3631) Toncian, T., Zastrau, U., (0000-0003-0390-7671) Schramm, U., Ping, Y., He, Z., Höppner, H., Pelka, A., (0000-0002-7671-0901) Laso García, A., Arefiev, A., Kemp, A., Allen, C. H., Bähtz, C., Nagler, B., Palmer, C. A. J., Murphy, C. D., Spindloe, C., Brown, C. R. D., Neely, D., (0000-0002-6350-4180) Kraus, D., Marley, E., Hartouni, E. P., Fiuza, F., Grim, G. P., Cochran, G. E., (0000-0003-4400-1315) Schlenvoigt, H.-P., (0000-0003-0931-1350) Prencipe, I., Williams, J., Green, J., Eggert, J. H., (0000-0003-3926-409X) Zeil, K., Lancaster, K. L., Divol, L., (0000-0002-6914-4083) Gaus, L., (0000-0003-1184-2097) Huang, L., Schoelmerich, M., (0000-0001-6200-6406) Rehwald, M., Oliver, M., Rödel, M., Macdonald, M., (0000-0002-7162-7500) Smid, M., Makita, M., Nakatsutsumi, M., (0000-0001-6748-0422) Humphries, O. S., Neumayer, P. B., Mabey, P., Shepherd, R. L., Gray, R., Wilks, S. C., Le Pape, S., Kerr, S. M., Glenzer, S. H., Funk, S., Gales, S. G., (0000-0002-5845-000X) Cowan, T., White, T. G., (0000-0003-4861-5584) Kluge, T., Doeppner, T., (0000-0001-7986-3631) Toncian, T., Zastrau, U., (0000-0003-0390-7671) Schramm, U., Ping, Y., He, Z., Höppner, H., and Pelka, A.

Abstract

In this presentation we provide an overview of the commissioning and first user experiment of ReLaX in combination with the XFEL beam. We will introduce the setup and laser parameters. We will show the established standard setup combining small-angle x-ray scattering (SAXS), phase-contrast imaging (PCI) and spectroscopy techniques. Finally we will show examples of the data obtained in the interaction of the ReLaX laser with targets of interested for the short-pulse laser community.

Published
2022

14. Combined Phase Contrast Imaging and Small-Angle X-Ray Scattering Diagnostic of Relativistic Plasmas at the High Energy Density Instrument at European XFEL

Author

(0000-0002-7671-0901) Laso García, A., Arefiev, A., Kemp, A., Allen, C. H., Bähtz, C., Nagler, B., Palmer, C. A. J., Murphy, C. D., Spindloe, C., Brown, C. R. D., Neely, D., (0000-0002-6350-4180) Kraus, D., Marley, E., Hartouni, E. P., Fiuza, F., Grim, G. P., Cochran, G. E., (0000-0003-4400-1315) Schlenvoigt, H.-P., (0000-0003-0931-1350) Prencipe, I., Williams, J., Green, J., Eggert, J. H., (0000-0003-3926-409X) Zeil, K., Lancaster, K. L., Divol, L., (0000-0002-6914-4083) Gaus, L., (0000-0003-1184-2097) Huang, L., Schoelmerich, M., (0000-0001-6200-6406) Rehwald, M., Oliver, M., Rödel, M., Macdonald, M., (0000-0002-7162-7500) Smid, M., Makita, M., Nakatsutsumi, M., (0000-0001-6748-0422) Humphries, O. S., Neumayer, P. B., Mabey, P., Shepherd, R. L., Gray, R., Wilks, S. C., Le Pape, S., Kerr, S. M., Glenzer, S. H., Funk, S., Gales, S. G., (0000-0002-5845-000X) Cowan, T., White, T. G., (0000-0003-4861-5584) Kluge, T., Doeppner, T., (0000-0001-7986-3631) Toncian, T., Zastrau, U., (0000-0003-0390-7671) Schramm, U., Ping, Y., He, Z., Höppner, H., Pelka, A., (0000-0002-7671-0901) Laso García, A., Arefiev, A., Kemp, A., Allen, C. H., Bähtz, C., Nagler, B., Palmer, C. A. J., Murphy, C. D., Spindloe, C., Brown, C. R. D., Neely, D., (0000-0002-6350-4180) Kraus, D., Marley, E., Hartouni, E. P., Fiuza, F., Grim, G. P., Cochran, G. E., (0000-0003-4400-1315) Schlenvoigt, H.-P., (0000-0003-0931-1350) Prencipe, I., Williams, J., Green, J., Eggert, J. H., (0000-0003-3926-409X) Zeil, K., Lancaster, K. L., Divol, L., (0000-0002-6914-4083) Gaus, L., (0000-0003-1184-2097) Huang, L., Schoelmerich, M., (0000-0001-6200-6406) Rehwald, M., Oliver, M., Rödel, M., Macdonald, M., (0000-0002-7162-7500) Smid, M., Makita, M., Nakatsutsumi, M., (0000-0001-6748-0422) Humphries, O. S., Neumayer, P. B., Mabey, P., Shepherd, R. L., Gray, R., Wilks, S. C., Le Pape, S., Kerr, S. M., Glenzer, S. H., Funk, S., Gales, S. G., (0000-0002-5845-000X) Cowan, T., White, T. G., (0000-0003-4861-5584) Kluge, T., Doeppner, T., (0000-0001-7986-3631) Toncian, T., Zastrau, U., (0000-0003-0390-7671) Schramm, U., Ping, Y., He, Z., Höppner, H., and Pelka, A.

Abstract

The High Energy Density (HED) instrument at the European XFEL provides a platform to study hot and warm dense matter. The Helmholtz International Beamline for Extreme Fields (HiBEF) is a User Consortium supplying HED with two laser systems (the high-intensity ReLaX laser, by Amplitude Technologies, and the high-energy Dipole-100X laser, by STFC), Diamond Anvil Cells setup and high-pulsed magnetic fields. These tools in combination with the XFEL beam enable the investigation of relativistic laser plasmas, strong-field QED phenomena, high-pressure astro- and planetary physics as well as magnetic phenomena in condensed matter. The successful commissioning of the ultra-short pulse high-intensity ReLaX laser, provides new unique opportunities in the plasma and high-field physics fields [1]. ReLaX is a double CPA Ti:Sa laser capable of delivering up to 300 TW pulses on target. In the first commissioning phase, 100 TW pulses were used, reaching intensities up to 1020 W/cm2. Small-Angle X-Ray Scattering (SAXS) without the need of a beamstop was first commissioned at HED in September 2019. Two highly annealed pyrolytic graphite (HAPG) crystals were used to reflect the SAXS photons onto a detector while allowing the main XFEL beam to go through [2]. In April and May 2021, Small Angle X-Ray Scattering and Phase Contrast Imaging (PCI) were simultaneously demonstrated in pump-probe experiments at HED in a community experiment involving 15 institutions from all over the world. In this talk we will present the preliminary results of this community experiment probing ultrafast phenomena in a wide array of target configurations: hole boring in wires, shockwave generation in CH blocks, buried heating of a wire inside a CH medium, foam ionization and collective effects in heated foils. [1] A. Laso Garcia, H. Hoeppner, A. Pelka et al., “ReLaX: the HiBEF high-intensity short-pulse laser driver for relativistic laser-matter interaction and strong-field science at the HED instrument at Eu

Published
2022

16. Transfer learning and multi-fidelity modeling of laser-driven particle acceleration.

Author

Djordjević, B. Z., Kim, J., Wilks, S. C., Ludwig, J., Myers, C., Kemp, A. J., Swanson, K. K., Zeraouli, G., Grace, E. S., Simpson, R. A., Rusby, D., Antoine, A. F., Bremer, P.-T., Thiagarajan, J., Anirudh, R., Williams, G. J., Ma, T., and Mariscal, D. A.

Subjects
PARTICLE acceleration, ARTIFICIAL neural networks, HOT carriers, ION energy, ELECTRON temperature
Abstract

Computer models of intense, laser-driven ion acceleration require expensive particle-in-cell simulations that may struggle to capture all the multi-scale, multi-dimensional physics involved at reasonable costs. Explored is an approach to ameliorate this deficiency using a multi-fidelity framework that can incorporate physical trends and phenomena at different levels. As the basis for this study, an ensemble of approximately 8000 1D simulations was generated to buttress separate ensembles of hundreds of higher fidelity 1D and 2D simulations. Using transfer learning with deep neural networks, one can reproduce the results of more complex physics at a much lower cost. The networks trained in this fashion can, in turn, act as surrogate models for the simulations themselves, allowing for quick and efficient exploration of the parameter space of interest. Standard figures-of-merit were used as benchmarks such as the hot electron temperature, peak ion energy, conversion efficiency, and so on. We can rapidly identify and explore under what conditions differing fidelities become an important effect and search for outliers in feature space. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Production of high fluence laser beams using ion wave plasma optics

Author

Kirkwood, R. K., primary, Poole, P. L., additional, Kalantar, D. H., additional, Chapman, T. D., additional, Wilks, S. C., additional, Edwards, M. R., additional, Turnbull, D. P., additional, Michel, P., additional, Divol, L., additional, Fisch, N. J., additional, Norreys, P., additional, Rozmus, W., additional, Bude, J., additional, Blue, B. E., additional, Fournier, K. B., additional, Van Wonterghem, B. M., additional, and MacKinnon, A., additional

Published
2022
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18. Commissioning and First User Experiments with ReLaX and XFEL Beam

Author

Laso García, A., Arefiev, A., Kemp, A., Allen, C. H., Bähtz, C., Nagler, B., Palmer, C. A. J., Murphy, C. D., Spindloe, C., Brown, C. R. D., Neely, D., Kraus, D., Marley, E., Hartouni, E. P., Fiuza, F., Grim, G. P., Cochran, G. E., Schlenvoigt, H.-P., Prencipe, I., Williams, J., Green, J., Eggert, J. H., Zeil, K., Lancaster, K. L., Divol, L., Gaus, L., Huang, L., Schoelmerich, M., Rehwald, M., Oliver, M., Rödel, M., Macdonald, M., Smid, M., Makita, M., Nakatsutsumi, M., Humphries, O. S., Neumayer, P. B., Mabey, P., Shepherd, R. L., Gray, R., Wilks, S. C., Le Pape, S., Kerr, S. M., Glenzer, S. H., Funk, S., Gales, S. G., Cowan, T., White, T. G., Kluge, T., Doeppner, T., Toncian, T., Zastrau, U., Schramm, U., Ping, Y., He, Z., Höppner, H., and Pelka, A.

Subjects
XFEL, PCI, SAXS, Laser-plasma, HiBEF
Abstract

In this presentation we provide an overview of the commissioning and first user experiment of ReLaX in combination with the XFEL beam. We will introduce the setup and laser parameters. We will show the established standard setup combining small-angle x-ray scattering (SAXS), phase-contrast imaging (PCI) and spectroscopy techniques. Finally we will show examples of the data obtained in the interaction of the ReLaX laser with targets of interested for the short-pulse laser community.

Published
2022

19. Plasma expansion and relativistic filamentation in intense laser-irradiated cone targets

Author

Cochran, G. E., primary, Kemp, A. J., additional, Wilks, S. C., additional, Kerr, S. M., additional, Williams, G. J., additional, Alessi, D. A., additional, Di Nicola, J.-M. G., additional, Hermann, M. R., additional, Kalantar, D. H., additional, Lanier, T. E., additional, Marinak, M. M., additional, Martinez, D., additional, Prantil, M. A., additional, Widmayer, C., additional, Williams, W. H., additional, and Mackinnon, A. J., additional

Published
2021
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21. Nonlinear Evolution of the Ion-Weibel Instability in Interpenetrating Plasmas of CH, Al, and Cu

Author

Manuel, M. J.-E., primary, Ghosh, S., additional, Jonnalagadda, R., additional, Beg, F., additional, Adamss, M., additional, Tzeferacos, P., additional, Huntington, C. M., additional, Remington, B. A., additional, Ross, J. S., additional, Ryutov, D. D., additional, Sio, H., additional, Swadling, G. F., additional, Wilks, S. C., additional, Park, H.-S., additional, and Sakawa, Y., additional

Published
2021
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22. Accelerating the rate of discovery: toward high-repetition-rate HED science

Author

Ma, T, primary, Mariscal, D, additional, Anirudh, R, additional, Bremer, T, additional, Djordjevic, B Z, additional, Galvin, T, additional, Grace, E, additional, Herriot, S, additional, Jacobs, S, additional, Kailkhura, B, additional, Hollinger, R, additional, Kim, J, additional, Liu, S, additional, Ludwig, J, additional, Neely, D, additional, Rocca, J J, additional, Scott, G G, additional, Simpson, R A, additional, Spears, B S, additional, Spinka, T S, additional, Swanson, K, additional, Thiagarajan, J J, additional, Van Essen, B, additional, Wang, S, additional, Wilks, S C, additional, Williams, G J, additional, Zhang, J, additional, Herrmann, M C, additional, and Haefner, C, additional

Published
2021
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25. Enhancements in laser-generated hot-electron production via focusing cone targets at short pulse and high contrast

Author

Rusby, D. R., primary, King, P. M., additional, Pak, A., additional, Lemos, N., additional, Kerr, S., additional, Cochran, G., additional, Pagano, I., additional, Hannasch, A., additional, Quevedo, H., additional, Spinks, M., additional, Donovan, M., additional, Link, A., additional, Kemp, A., additional, Wilks, S. C., additional, Williams, G. J., additional, Manuel, M. J.-E., additional, Gavin, Z., additional, Haid, A., additional, Albert, F., additional, Aufderheide, M., additional, Chen, H., additional, Siders, C. W., additional, Macphee, A., additional, and Mackinnon, A., additional

Published
2021
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29. Experimental and calculational investigation of laser-heated additive manufactured foams

Author

Jones, O. S., primary, Kemp, G. E., additional, Langer, S. H., additional, Winjum, B. J., additional, Berger, R. L., additional, Oakdale, J. S., additional, Belyaev, M. A., additional, Biener, J., additional, Biener, M. M., additional, Mariscal, D. A., additional, Milovich, J. L., additional, Stadermann, M., additional, Sterne, P. A., additional, and Wilks, S. C., additional

Published
2021
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30. Time-resolved Measurement of Power Transfer in Plasma Amplifier Experiments on NIF

Author

Poole, P. L., primary, Kirkwood, R. K, additional, Wilks, S. C., additional, Chapman, T. D., additional, Kalantar, D., additional, Edwards, M., additional, Michel, P., additional, Divol, L., additional, Bude, J., additional, Blue, B. E., additional, Fournier, K. B., additional, Van Wonterghem, B. M., additional, Fisch, N., additional, Norreys, P., additional, and Rozmus, W., additional

Published
2021
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31. Erratum: “First demonstration of ARC-accelerated proton beams at the National Ignition Facility” [Physics of Plasmas 26, 043110 (2019)]

Author

Mariscal, D., primary, Ma, T., additional, Wilks, S. C., additional, Kemp, A. J., additional, Williams, G. J., additional, Michel, P., additional, Chen, H., additional, Patel, P. K., additional, Remington, B. A., additional, Bowers, M., additional, Pelz, L., additional, Hermann, M. R., additional, Hsing, W., additional, Martinez, D., additional, Sigurdsson, R., additional, Prantil, M., additional, Conder, A., additional, Lawson, J., additional, Hamamoto, M., additional, Di Nicola, P., additional, Widmayer, C., additional, Hoemoelle, D., additional, Lowe-Webb, R., additional, Herriot, S., additional, Williams, W., additional, Alessi, D., additional, Kalantar, D., additional, Zacharias, R., additional, Haefner, C., additional, Thompson, N., additional, Zobrist, T., additional, Lord, D., additional, Hash, N., additional, Pak, A., additional, Lemos, N., additional, Tabak, M., additional, McGuffey, C., additional, Kim, J., additional, Beg, F. N., additional, Wei, M. S., additional, Norreys, P., additional, Morace, A., additional, Iwata, N., additional, Sentoku, Y., additional, Neely, D., additional, Scott, G. G., additional, Flippo, K., additional, Gatu-Johnson, M., additional, and Lahmann, B., additional

Published
2020
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34. Nuclear Fusion in Gases of Deuterium Clusters and Hot Electron Generation in Droplet Sprays Under Irradiation with an Intense Femtosecond Laser

Author

Ditmire, T., primary, Zweiback, J., additional, Cowan, T. E., additional, Hays, G., additional, Wharton, K. B., additional, Crane, J. K, additional, Wilks, S. C., additional, Smith, R. A., additional, Donnelly, T. D., additional, Rust, M., additional, Weiner, I., additional, and Allen, M., additional

Published
2001
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37. First demonstration of ARC-accelerated proton beams at the National Ignition Facility

Author

Mariscal, D., primary, Ma, T., additional, Wilks, S. C., additional, Kemp, A. J., additional, Williams, G. J., additional, Michel, P., additional, Chen, H., additional, Patel, P. K., additional, Remington, B. A., additional, Bowers, M., additional, Pelz, L., additional, Hermann, M. R., additional, Hsing, W., additional, Martinez, D., additional, Sigurdsson, R., additional, Prantil, M., additional, Conder, A., additional, Lawson, J., additional, Hamamoto, M., additional, Di Nicola, P., additional, Widmayer, C., additional, Homoelle, D., additional, Lowe-Webb, R., additional, Herriot, S., additional, Williams, W., additional, Alessi, D., additional, Kalantar, D., additional, Zacharias, R., additional, Haefner, C., additional, Thompson, N., additional, Zobrist, T., additional, Lord, D., additional, Hash, N., additional, Pak, A., additional, Lemos, N., additional, Tabak, M., additional, McGuffey, C., additional, Kim, J., additional, Beg, F. N., additional, Wei, M. S., additional, Norreys, P., additional, Morace, A., additional, Iwata, N., additional, Sentoku, Y., additional, Neely, D., additional, Scott, G. G., additional, and Flippo, K., additional

Published
2019
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38. Kinetic effects on neutron generation in moderately collisional interpenetrating plasma flows

Author

Higginson, D. P., primary, Ross, J. S., additional, Ryutov, D. D., additional, Fiuza, F., additional, Wilks, S. C., additional, Hartouni, E. P., additional, Hatarik, R., additional, Huntington, C. M., additional, Kilkenny, J., additional, Lahmann, B., additional, Li, C. K., additional, Link, A., additional, Petrasso, R. D., additional, Pollock, B. B., additional, Remington, B. A., additional, Rinderknecht, H. G., additional, Sakawa, Y., additional, Sio, H., additional, Swadling, G. F., additional, Weber, S., additional, Zylstra, A. B., additional, and Park, H.-S., additional

Published
2019
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41. A plasma amplifier to combine multiple beams at NIF

Author

Kirkwood, R. K., primary, Turnbull, D. P., additional, Chapman, T., additional, Wilks, S. C., additional, Rosen, M. D., additional, London, R. A., additional, Pickworth, L. A., additional, Colaitis, A., additional, Dunlop, W. H., additional, Poole, P., additional, Moody, J. D., additional, Strozzi, D. J., additional, Michel, P. A., additional, Divol, L., additional, Landen, O. L., additional, MacGowan, B. J., additional, Van Wonterghem, B. M., additional, Fournier, K. B., additional, and Blue, B. E., additional

Published
2018
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44. Highly Resolved Measurements of a Developing Strong Collisional Plasma Shock

Author

Rinderknecht, Hans G., primary, Park, H.-S., additional, Ross, J. S., additional, Amendt, P. A., additional, Higginson, D. P., additional, Wilks, S. C., additional, Haberberger, D., additional, Katz, J., additional, Froula, D. H., additional, Hoffman, N. M., additional, Kagan, G., additional, Keenan, B. D., additional, and Vold, E. L., additional

Published
2018
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45. Assessment of ion kinetic effects in shock-driven inertial confinement fusion implosions using fusion burn imaging

Author

Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Plasma Science and Fusion Center, Rosenberg, Michael Jonathan, Seguin, Fredrick Hampton, Rinderknecht, Hans George, Zylstra, Alex Bennett, Li, C. K., Sio, Hong Weng, Gatu Johnson, Maria, Frenje, Johan A, Petrasso, Richard D, Amendt, P. A., Atzeni, S., Hoffman, N. M., Glebov, V. Yu., Stoeckl, C., Seka, W., Marshall, F. J., Delettrez, J. A., Sangster, T. C., Betti, R., Wilks, S. C., Pino, J., Kagan, G., Molvig, K., Nikroo, A., Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Plasma Science and Fusion Center, Rosenberg, Michael Jonathan, Seguin, Fredrick Hampton, Rinderknecht, Hans George, Zylstra, Alex Bennett, Li, C. K., Sio, Hong Weng, Gatu Johnson, Maria, Frenje, Johan A, Petrasso, Richard D, Amendt, P. A., Atzeni, S., Hoffman, N. M., Glebov, V. Yu., Stoeckl, C., Seka, W., Marshall, F. J., Delettrez, J. A., Sangster, T. C., Betti, R., Wilks, S. C., Pino, J., Kagan, G., Molvig, K., and Nikroo, A.

Abstract

The significance and nature of ion kinetic effects in D[subscript 3]He-filled, shock-driven inertial confinement fusion implosions are assessed through measurements of fusion burn profiles. Over this series of experiments, the ratio of ion-ion mean free path to minimum shell radius (the Knudsen number, N[subscript K]) was varied from 0.3 to 9 in order to probe hydrodynamic-like to strongly kinetic plasma conditions; as the Knudsen number increased, hydrodynamic models increasingly failed to match measured yields, while an empirically-tuned, first-step model of ion kinetic effects better captured the observed yield trends [Rosenberg et al., Phys. Rev. Lett. 112, 185001 (2014)]. Here, spatially resolved measurements of the fusion burn are used to examine kinetic ion transport effects in greater detail, adding an additional dimension of understanding that goes beyond zero-dimensional integrated quantities to one-dimensional profiles. In agreement with the previous findings, a comparison of measured and simulated burn profiles shows that models including ion transport effects are able to better match the experimental results. In implosions characterized by large Knudsen numbers (N[subscript K] ∼ 3), the fusion burn profiles predicted by hydrodynamics simulations that exclude ion mean free path effects are peaked far from the origin, in stark disagreement with the experimentally observed profiles, which are centrally peaked. In contrast, a hydrodynamics simulation that includes a model of ion diffusion is able to qualitatively match the measured profile shapes. Therefore, ion diffusion or diffusion-like processes are identified as a plausible explanation of the observed trends, though further refinement of the models is needed for a more complete and quantitative understanding of ion kinetic effects., United States. Department of Energy (Grant DE-NA0001857), United States. Department of Energy (Grant DE-FC52-08NA28752)

Published
2017

46. Scaled laboratory experiments explain the kink behaviour of the Crab Nebula jet

Author

Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Plasma Science and Fusion Center, Li, Chikang, Rosenberg, Michael Jonathan, Frenje, Johan A, Rinderknecht, Hans George, Sio, Hong Weng, Zylstra, Alex Bennett, Petrasso, Richard D, Seguin, Fredrick Hampton, Tzeferacos, P., Lamb, D., Gregori, G., Norreys, P. A., Follett, R. K., Froula, D. H., Koenig, M., Amendt, P. A., Park, H. S., Remington, B. A., Ryutov, D. D., Wilks, S. C., Betti, R., Frank, A., Hu, S. X., Sangster, T. C., Hartigan, P., Drake, R. P., Kuranz, C. C., Lebedev, S. V., Woolsey, N. C., Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Plasma Science and Fusion Center, Li, Chikang, Rosenberg, Michael Jonathan, Frenje, Johan A, Rinderknecht, Hans George, Sio, Hong Weng, Zylstra, Alex Bennett, Petrasso, Richard D, Seguin, Fredrick Hampton, Tzeferacos, P., Lamb, D., Gregori, G., Norreys, P. A., Follett, R. K., Froula, D. H., Koenig, M., Amendt, P. A., Park, H. S., Remington, B. A., Ryutov, D. D., Wilks, S. C., Betti, R., Frank, A., Hu, S. X., Sangster, T. C., Hartigan, P., Drake, R. P., Kuranz, C. C., Lebedev, S. V., and Woolsey, N. C.

Abstract

The remarkable discovery by the Chandra X-ray observatory that the Crab nebula’s jet periodically changes direction provides a challenge to our understanding of astrophysical jet dynamics. It has been suggested that this phenomenon may be the consequence of magnetic fields and magnetohydrodynamic instabilities, but experimental demonstration in a controlled laboratory environment has remained elusive. Here we report experiments that use high-power lasers to create a plasma jet that can be directly compared with the Crab jet through well-defined physical scaling laws. The jet generates its own embedded toroidal magnetic fields; as it moves, plasma instabilities result in multiple deflections of the propagation direction, mimicking the kink behaviour of the Crab jet. The experiment is modelled with three-dimensional numerical simulations that show exactly how the instability develops and results in changes of direction of the jet., United States. Department of Energy (Grant DE-FG03-09NA29553), United States. Department of Energy (Grant DE-SC0007168), University of Rochester. Laboratory for Laser Energetics (414090-G), National Laser User’s Facility (DE-NA0000877), University of Rochester. Fusion Science Center (415023-G), Lawrence Livermore National Laboratory (B580243)

Published
2017

48. Plasma-based beam combiner for very high fluence and energy

Author

Kirkwood, R. K., primary, Turnbull, D. P., additional, Chapman, T., additional, Wilks, S. C., additional, Rosen, M. D., additional, London, R. A., additional, Pickworth, L. A., additional, Dunlop, W. H., additional, Moody, J. D., additional, Strozzi, D. J., additional, Michel, P. A., additional, Divol, L., additional, Landen, O. L., additional, MacGowan, B. J., additional, Van Wonterghem, B. M., additional, Fournier, K. B., additional, and Blue, B. E., additional

Published
2017
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50. Imaging at an x-ray absorption edge using free electron laser pulses for interface dynamics in high energy density systems

Author

Beckwith, M. A., primary, Jiang, S., additional, Schropp, A., additional, Fernandez-Pañella, A., additional, Rinderknecht, H. G., additional, Wilks, S. C., additional, Fournier, K. B., additional, Galtier, E. C., additional, Xing, Z., additional, Granados, E., additional, Gamboa, E., additional, Glenzer, S. H., additional, Heimann, P., additional, Zastrau, U., additional, Cho, B. I., additional, Eggert, J. H., additional, Collins, G. W., additional, and Ping, Y., additional

Published
2017
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