Dr. Ronnie L. Shepherd Profile

Dr. Ronnie L. Shepherd

Physicist at Lawrence Livermore National Lab

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Author

Publications (17)

Proceedings Article | 5 March 2021 Presentation

Complete single-shot spatiotemporal measurement of a terawatt laser pulse

Elizabeth Grace, Tammy Ma, Zhe Guang, Rana Jafari, Jaebum Park, Jerry Clark, Gregory Kemp, James Moody, Ronnie Shepherd, Brent Stuart, Rick Trebino

Proceedings Volume 11684, 1168406 (2021) https://doi.org/10.1117/12.2578720

KEYWORDS: Pulsed laser operation, Measurement devices, Laser systems engineering, Optical filters, Holograms, Diagnostics, Comets, Beam splitters

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Proceedings Article | 5 October 2011 Paper

Spectroscopic studies of hard x-ray free-electron laser-heated foils at 1016 Wcm-2 irradiances

J. Dunn, R. Shepherd, A. Graf, A. Steel, J. Park, S. Moon, R. Lee, P. Audebert, A. Levy, M. Gauthier, J. Fuchs, D. Fritz, M. Cammarata, D. Milathianaki, H. J. Lee, B. Nagler, C. Fourment, F. Deneuville, G. Williams, M. Fajardo, J. Gaudin, S. Vinko, O. Ciricosta, J. Wark, H. Chung

Proceedings Volume 8140, 81400O (2011) https://doi.org/10.1117/12.895264

KEYWORDS: X-rays, Free electron lasers, Silver, Crystals, Hard x-rays, Spectrometers, Copper, Diagnostics, Picosecond phenomena, Spectroscopy

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Proceedings Article | 29 September 2009 Paper

Perspective for high energy density studies on x-ray FELs

R. Lee, B. Nagler, U. Zastrau, R. Fäustlin, S. Vinko, T. Whitcher, R. Sobierajski, J. Krzywinski, L. Juha, A. Nelson, S. Bajt, K. Budil, R. Cauble, T. Bornath, T. Burian, J. Chalupsky, H. Chapman, J. Cihelka, T. Döppner, T. Dzelzainis, S. Düsterer, M. Fajardo, E. Förster, C. Fortmann, S. Glenzer, S. Göde, G. Gregori, V. Hajkova, P. Heimann, M. Jurek, F. Khattak, A. Khorsand, D. Klinger, M. Kozlova, T. Laarmann, H.-J. Lee, K.-H. Meiwes-Broer, P. Mercere, W. Murphy, A. Przystawik, R. Redmer, H. Reinholz, D. Riley, G. Röpke, K. Saksl, R. Thiele, J. Tiggesbäumker, S. Toleikis, T. Tschentscher, I. Uschmann, R. Falcone, R. Shepherd, J. Hastings, W. White, J. Wark

Proceedings Volume 7451, 74510E (2009) https://doi.org/10.1117/12.825349

KEYWORDS: Free electron lasers, X-rays, Extreme ultraviolet, Electrons, Absorption, Luminescence, Liquid crystal lasers, Photons, Fusion energy, Chemical species

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Proceedings Article | 12 October 2007 Paper

Development of soft x-ray lasers at PALS and their applications in dense plasma physics

B. Rus, T. Mocek, M. Kozlová, J. Polan, P. Homer, K. Jakubczak, M. Stupka, G. Tallents, M. Edwards, N. Booth, Z. Zhai, J. Dunn, A. Nelson, M. Fajardo, P. Zeitoun, M. Foord, R. Shepherd, W. Rozmus, H. Baldis, J. Sobota

Proceedings Volume 6702, 67020G (2007) https://doi.org/10.1117/12.734652

KEYWORDS: X-ray lasers, Plasma, Zinc, X-rays, Infrared lasers, Thomson scattering, Laser ablation, Aluminum, Mirrors, Solids

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Proceedings Article | 12 October 2007 Paper

21-nm x-ray laser Thomson scattering of laser-heated exploding foil plasmas

J. Dunn, B. Rus, T. Mocek, A. Nelson, M. Foord, W. Rozmus, H. Baldis, R. Shepherd, M. Kozlová, J. Polan, P. Homer, M. Stupka

Proceedings Volume 6702, 67020O (2007) https://doi.org/10.1117/12.734718

KEYWORDS: Plasmas, X-ray lasers, Thomson scattering, Laser scattering, Scattering, Spectroscopy, Pulsed laser operation, Aluminum, X-rays, Explosives

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Proceedings Article | 28 January 2004 Paper

Subpicosecond streak camera measurements at LLNL: from IR to x-rays

Jaroslav Kuba, Ronnie Shepherd, Rex Booth, Richard Stewart, Edward Lee, Patrick Audebert, John Crane, Robert Cross, James Dunn, Paul Springer

Proceedings Volume 5194, (2004) https://doi.org/10.1117/12.509702

KEYWORDS: Streak cameras, X-ray lasers, Picosecond phenomena, Temporal resolution, X-rays, Spectroscopy, Pulsed laser operation, Plasmas, Infrared cameras, Electrodes

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Proceedings Article | 7 January 2004 Paper

Measurement of the time-resolved x-ray emission of different elements irradiated with a subpicosecond high-power laser

Claude Chenais-Popovics, Patrick Audebert, Virginie Nagels, Jean-Paul Geindre, Jean-Claude Gauthier, Sylvie Gary, Frederic Girard, Fabien Dorchies, Ronnie Shepherd, Olivier Peyrusse

Proceedings Volume 5196, (2004) https://doi.org/10.1117/12.507071

KEYWORDS: Plasma, X-rays, Aluminum, Picosecond phenomena, Samarium, Selenium, Streak cameras, Crystals, Interferometry, Spectroscopy

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Proceedings Article | 19 December 2003 Paper

Improved energy coupling into the gain region of the Ni-like Pd transient collisional x-ray laser

Raymond Smith, James Dunn, Jorge Filevich, Stephen Moon, Joeseph Nilsen, Roisin Keenan, Vyacheslev Shlyaptsev, Jorge Rocca, James Hunter, Ronnie Shepherd, Rex Booth, Mario Marconi

Proceedings Volume 5197, (2003) https://doi.org/10.1117/12.504837

KEYWORDS: X-ray lasers, Plasma, Picosecond phenomena, Near field, Palladium, Refraction, Pulsed laser operation, Interferometry, X-rays, Mirrors

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Proceedings Article | 19 December 2003 Paper

Temporal characterization of a picosecond-laser-pumped x-ray laser for applications

James Dunn, Raymond Smith, Ronnie Shepherd, Rex Booth, Joseph Nilsen, James Hunter, Vyacheslav Shlyaptsev

Proceedings Volume 5197, (2003) https://doi.org/10.1117/12.504904

KEYWORDS: X-ray lasers, Picosecond phenomena, Streak cameras, X-rays, Pulsed laser operation, Palladium, Mirrors, Near field optics, Near field, Optical pumping

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Proceedings Article | 14 November 2001 Paper

Temporal and spectral dependence of samariuom x-ray emission in subpicosecond and nanosecond laser-produced plasmas

Claude Chenais-Popovics, Patrick Audebert, M. Fajardo, Ronnie Shepherd, Olivier Peyrusse, Jean-Claude Gauthier

Proceedings Volume 4504, (2001) https://doi.org/10.1117/12.448473

KEYWORDS: Plasmas, Picosecond phenomena, X-rays, Samarium, Femtosecond phenomena, X-ray sources, Streak cameras, Absorption spectroscopy, Ionization, Absorption

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Proceedings Article | 1 November 1997 Paper

Table-top transient collisional excitation x-ray laser research at LLNL

James Dunn, Albert Osterheld, Ronnie Shepherd, William White, Vyacheslav Shlyaptsev, Anthony Bullock, Richard Stewart

Proceedings Volume 3156, (1997) https://doi.org/10.1117/12.293375

KEYWORDS: X-ray lasers, Picosecond phenomena, Titanium, Palladium, Pulsed laser operation, Plasma, Optical amplifiers, Ions, Analog electronics, Spectroscopy

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Proceedings Article | 14 October 1997 Paper

Subpicosecond time-resolved x-ray measurements

Ronnie Shepherd, Rex Booth, Bruce Young, Dwight Price, Richard More, Richard Lee, Richard Stewart

Proceedings Volume 3157, (1997) https://doi.org/10.1117/12.290263

KEYWORDS: X-rays, Electrons, Picosecond phenomena, Streak cameras, Plasma, Ionization, Aluminum, Absorption, Time metrology, Pulsed laser operation

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Proceedings Article | 18 September 1995 Paper

Femtosecond laser-produced plasma x rays from periodically modulated surface targets

Jean-Claude Gauthier, S. Bastiani, Patrick Audebert, Jean-Paul Geindre, K. Neuman, Tom Donnelly, M. Hoffer, Roger Falcone, Ronnie Shepherd, Dwight Price, William White

Proceedings Volume 2523, (1995) https://doi.org/10.1117/12.220985

KEYWORDS: Absorption, Plasma, X-rays, Diffraction gratings, Pulsed laser operation, Diffraction, Silicon, Modulation, Laser energy, Semiconductor lasers

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Proceedings Article | 12 July 1994 Paper

Characteristics of an ultrafast x-ray streak camera

Ronnie Shepherd, Rex Booth, Dwight Price, Mark Bowers, Don Swan, James Bonlie, Bruce Young, James Dunn, William White, Richard Stewart

Proceedings Volume 2278, (1994) https://doi.org/10.1117/12.180003

KEYWORDS: Electrons, X-rays, Streak cameras, Temporal resolution, Picosecond phenomena, Calibration, Ultrafast phenomena, X-ray detectors, Gold, Dispersion

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Proceedings Article | 8 July 1993 Paper

Characterization of short-pulse laser-produced plasmas at the Lawrence Livermore National Laboratory ultrashort-pulse laser

Ronnie Shepherd, Dwight Price, William White, Albert Osterheld, Rosemary Walling, William Goldstein, Richard Stewart, Susana Gordan

Proceedings Volume 1860, (1993) https://doi.org/10.1117/12.147569

KEYWORDS: X-rays, Plasmas, Aluminum, Optical filters, Streak cameras, Beryllium, Temperature metrology, Pulsed laser operation, Spectroscopy, Solids

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Proceedings Article | 17 June 1993 Paper

Limitations on the fidelity of 100-fs pulses produced by chirped-pulse amplification

William White, Frank Patterson, Linn Van Woerkom, Dwight Price, Ronnie Shepherd

Proceedings Volume 1861, (1993) https://doi.org/10.1117/12.147073

KEYWORDS: Pulsed laser operation, Ultrafast phenomena, Spectroscopy, Laser systems engineering, Ultrafast laser spectroscopy, Laser development, Lens design, Plasma, Data modeling, Monochromatic aberrations

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Proceedings Article | 1 January 1992 Paper

Subpicosecond x-ray streak camera

Mark Bowers, Ronnie Shepherd, Richard Stewart

Proceedings Volume 1539, (1992) https://doi.org/10.1117/12.50528

KEYWORDS: X-rays, Streak cameras, Cameras, Ultraviolet radiation, Picosecond phenomena, Temporal resolution, Plasmas, Potassium, Pulse generators, Femtosecond phenomena

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Showing 5 of 17 publications

Conference Committee Involvement (3)

Ultrafast X-Ray Sources and Detectors

26 August 2007 | San Diego, California, United States

Ultrafast X-Ray Detectors and Applications II

31 July 2005 | San Diego, California, United States

Ultrafast X-Ray Detectors and Applications

6 August 2003 | San Diego, California, United States

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