Search Results - "Wark, Justin"

Imaging transient melting of a nanocrystal using an X-ray laser by Clark, Jesse N, Loren Beitra, Gang Xiong, David M. Fritz, Henrik T. Lemke, Diling Zhu, Matthieu Chollet, Garth J. Williams, Marc M. Messerschmidt, Brian Abbey, Ross J. Harder, Alexander M. Korsunsky, Justin S. Wark, David A. Reis, Ian K. Robinson

“…There is a fundamental interest in studying photoinduced dynamics in nanoparticles and nanostructures as it provides insight into their mechanical and thermal…”
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Imaging Shock Waves in Diamond with Both High Temporal and Spatial Resolution at an XFEL by Schropp, Andreas, Hoppe, Robert, Meier, Vivienne, Patommel, Jens, Seiboth, Frank, Ping, Yuan, Hicks, Damien G., Beckwith, Martha A., Collins, Gilbert W., Higginbotham, Andrew, Wark, Justin S., Lee, Hae Ja, Nagler, Bob, Galtier, Eric C., Arnold, Brice, Zastrau, Ulf, Hastings, Jerome B., Schroer, Christian G.

“…The advent of hard x-ray free-electron lasers (XFELs) has opened up a variety of scientific opportunities in areas as diverse as atomic physics, plasma…”
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Molecular dynamics simulations of shock-compressed single-crystal silicon by Mogni, Gabriele, Higginbotham, Andrew, Gaál-Nagy, Katalin, Park, Nigel, Wark, Justin S.

“…We present molecular dynamics simulations using a Tersoff-like potential of single crystals of silicon shock compressed along the [left angle bracket]001[right…”
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Shock waves in polycrystalline iron: Plasticity and phase transitions by Gunkelmann, Nina, Bringa, Eduardo M., Tramontina, Diego R., Ruestes, Carlos J., Suggit, Matthew J., Higginbotham, Andrew, Wark, Justin S., Urbassek, Herbert M.

“…At a pressure of around 13 GPa iron undergoes a structural phase transition from the bcc to the hexagonal close-packed phase. Atomistic simulations have…”
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Femtosecond quantification of void evolution during rapid material failure by Coakley, James, Higginbotham, Andrew, McGonegle, David, Ilavsky, Jan, Swinburne, Thomas D, Wark, Justin S, Rahman, Khandaker M, Vorontsov, Vassili A, Dye, David, Lane, Thomas J, Boutet, Sébastien, Koglin, Jason, Robinson, Joseph, Milathianaki, Despina

“…Understanding high-velocity impact, and the subsequent high strain rate material deformation and potential catastrophic failure, is of critical importance…”
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Non-thermal evolution of dense plasmas driven by intense x-ray fields by Ren, Shenyuan, Shi, Yuanfeng, van den Berg, Quincy Y., Kasim, Muhammad F., Chung, Hyun-Kyung, Fernandez-Tello, Elisa V., Velarde, Pedro, Wark, Justin S., Vinko, Sam M.

“…The advent of x-ray free-electron lasers has enabled a range of new experimental investigations into the properties of matter driven to extreme conditions via…”
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Comments on A new theory for X‐ray diffraction by Fraser, Jack T., Wark, Justin S.

“…In an article entitled A new theory for X‐ray diffraction [Fewster (2014). Acta Cryst. A70, 257–282], hereafter referred to as NTXRD, it is claimed that when…”
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Resonant inelastic x-ray scattering in warm-dense Fe compounds beyond the SASE FEL resolution limit by Forte, Alessandro, Gawne, Thomas, Alaa El-Din, Karim K., Humphries, Oliver S., Preston, Thomas R., Crépisson, Céline, Campbell, Thomas, Svensson, Pontus, Azadi, Sam, Heighway, Patrick, Shi, Yuanfeng, Chin, David A., Smith, Ethan, Baehtz, Carsten, Bouffetier, Victorien, Höppner, Hauke, Amouretti, Alexis, McGonegle, David, Harmand, Marion, Collins, Gilbert W., Wark, Justin S., Polsin, Danae N., Vinko, Sam M.

“…Resonant inelastic x-ray scattering (RIXS) is a widely used spectroscopic technique, providing access to the electronic structure and dynamics of atoms,…”
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Shock waves in polycrystalline iron by Kadau, Kai, Germann, Timothy C, Lomdahl, Peter S, Albers, Robert C, Wark, Justin S, Higginbotham, Andrew, Holian, Brad Lee

“…The propagation of shock waves through polycrystalline iron is explored by large-scale atomistic simulations. For large enough shock strengths the passage of…”
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Nanosecond white-light Laue diffraction measurements of dislocation microstructure in shock-compressed single-crystal copper by Suggit, Matthew J., Higginbotham, Andrew, Hawreliak, James A., Mogni, Gabriele, Kimminau, Giles, Dunne, Patrick, Comley, Andrew J., Park, Nigel, Remington, Bruce A., Wark, Justin S.

“…Under uniaxial high-stress shock compression it is believed that crystalline materials undergo complex, rapid, micro-structural changes to relieve the large…”
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X-ray Spectroscopic Studies of a Solid-Density Germanium Plasma Created by a Free Electron Laser by Pérez-Callejo, Gabriel, Vinko, Sam M., Ren, Shenyuan, Royle, Ryan, Humphries, Oliver, Preston, Thomas R., Hammel, Bruce A., Chung, Hyun-Kyung, Burian, Tomas, Vozda, Vojtěch, Lin, Ming-Fu, van Driel, Tim Brandt, Wark, Justin S.

“…The generation of solid-density plasmas in a controlled manner using an X-ray free electron laser (XFEL) has opened up the possibility of diagnosing the atomic…”
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High-pressure nanocrystalline structure of a shock-compressed single crystal of iron by Hawreliak, James A., Kalantar, Daniel H., Stölken, James S., Remington, Bruce A., Lorenzana, Hector E., Wark, Justin S.

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Extension of the time-dependent dynamical diffraction theory to `optical phonon'-type distortions: application to diffraction from coherent acoustic and optical phonons by Sondhauss, Peter, Wark, Justin. S.

“…An extension of the time‐dependent Takagi–Taupin theory to `optical phonon'‐type distortions is presented. By splitting the susceptibility into the…”
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Atomic physics X-ray laser peels and cores atoms by Wark, Justin

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Shock-driven amorphization and melt in Fe$_2$O$_3 by Crépisson, Céline, Amouretti, Alexis, Harmand, Marion, Sanloup, Chrystèle, Heighway, Patrick, Azadi, Sam, McGonegle, David, Campbell, Thomas, Chin, David Alexander, Smith, Ethan, Hansen, Linda, Forte, Alessandro, Gawne, Thomas, Lee, Hae Ja, Nagler, Bob, Shi, YuanFeng, Fiquet, Guillaume, Guyot, François, Makita, Mikako, Benuzzi-Mounaix, Alessandra, Vinci, Tommaso, Miyanishi, Kohei, Ozaki, Norimasa, Pikuz, Tatiana, Nakamura, Hirotaka, Sueda, Keiichi, Yabuuchi, Toshinori, Yabashi, Makina, Wark, Justin S, Polsin, Danae N, Vinko, Sam M

“…We present measurements on Fe$_2$O$_3$ amorphization and melt under laser-driven shock compression up to 209(10) GPa via time-resolved in situ x-ray…”
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X-ray laser peels and cores atoms by Wark, Justin

“…The world's first kiloelectronvolt X-ray laser produces such a high flux of photons that atoms can be 'cored'. In other words, the light source can knock out…”
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X-ray laser peels and cores atoms: the world's first kiloelectronvolt X-ray laser produces such a high flux of photons that atoms can be 'cored'. In other words, the light source can knock out both the electrons of an atom's innermost shell by Wark, Justin

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Revealing multiphoton resonant ionization in solid density plasmas with an x-ray free electron laser by Byoung-Ick Cho, Engelhorn, K., Vinko, S. M., Wark, J. S., Falcone, R. W., Heimann, P. A.

“…Interaction of intense x-ray and solid density Al plasma is studied via K-shell emission spectroscopy. A high fluence, high-intensity x-ray pulse from an x-ray…”
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Experimental observation of open structures in elemental magnesium at terapascal pressures by Gorman, M. G., Elatresh, S., Lazicki, A., Cormier, M. M. E., Bonev, S. A., McGonegle, D., Briggs, R., Coleman, A. L., Rothman, S. D., Peacock, L., Bernier, J. V., Coppari, F., Braun, D. G., Rygg, J. R., Fratanduono, D. E., Hoffmann, R., Collins, G. W., Wark, J. S., Smith, R. F., Eggert, J. H., McMahon, M. I.

“…Investigating how solid matter behaves at enormous pressures, such as those found in the deep interiors of giant planets, is a great experimental challenge…”
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In situ x-ray diffraction measurements of the c / a ratio in the high-pressure ε phase of shock-compressed polycrystalline iron by Hawreliak, James A., El-Dasher, Bassem, Lorenzana, Hector, Kimminau, Giles, Higginbotham, Andrew, Nagler, Bob, Vinko, Sam M., Murphy, William J., Whitcher, Thomas, Wark, Justin S., Rothman, Steve, Park, Nigel

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