Oxford Centre for High Energy Density Science (OxCHEDS)

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Optical Rotation Quasi-Phase-Matching for Circularly Polarized High Harmonic Generation

(2013)

Authors:

Lewis Z Liu, Kevin O'Keeffe, Simon M Hooker
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Strength of Shock-Loaded Single-Crystal Tantalum [100] Determined using in Situ Broadband X-Ray Laue Diffraction

Physical Review Letters 110:11 (2013)

Authors:

AJ Comley, BR Maddox, RE Rudd, ST Prisbrey, JA Hawreliak, DA Orlikowski, SC Peterson, JH Satcher, AJ Elsholz, HS Park, BA Remington, N Bazin, JM Foster, P Graham, N Park, PA Rosen, SR Rothman, A Higginbotham, M Suggit, JS Wark

Abstract:

The strength of shock-loaded single crystal tantalum [100] has been experimentally determined using in situ broadband x-ray Laue diffraction to measure the strain state of the compressed crystal, and elastic constants calculated from first principles. The inferred strength reaches 35 GPa at a shock pressure of 181 GPa and is in excellent agreement with a multiscale strength model, which employs a hierarchy of simulation methods over a range of length scales to calculate strength from first principles. © 2013 American Physical Society.
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Observation of inhibited electron-ion coupling in strongly heated graphite

(2013)

Authors:

TG White, J Vorberger, CRD Brown, BJB Crowley, P Davis, SH Glenzer, JWO Harris, DC Hochhaus, S Le Pape, T Ma, CD Murphy, P Neumayer, LK Pattison, S Richardson, DO Gericke, G Gregori
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Erratum: Quasi-phase-matching of high-order-harmonic generation using polarization beating in optical waveguides [Phys. Rev. A 85, 053823 (2012)]

Physical Review A American Physical Society (APS) 87:3 (2013) 039902

Authors:

Lewis Z Liu, Kevin O’Keeffe, Simon M Hooker
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FLASH hydrodynamic simulations of experiments to explore the generation of cosmological magnetic fields

High Energy Density Physics 9:1 (2013) 75-81

Authors:

A Scopatz, M Fatenejad, N Flocke, G Gregori, M Koenig, DQ Lamb, D Lee, J Meinecke, A Ravasio, P Tzeferacos, K Weide, R Yurchak

Abstract:

We report the results of FLASH hydrodynamic simulations of the experiments conducted by the University of Oxford High Energy Density Laboratory Astrophysics group and its collaborators at the Laboratoire pour l'Utilisation de Lasers Intenses (LULI). In these experiments, a long-pulse laser illuminates a target in a chamber filled with Argon gas, producing shock waves that generate magnetic fields via the Biermann battery mechanism. The simulations show that the result of the laser illuminating the target is a series of complex hydrodynamic phenomena. © 2012 Elsevier B.V.
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