Oxford Centre for High Energy Density Science (OxCHEDS)

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Perspective for high energy density studies on x-ray FELs

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 7451 (2009) 74510e-74510e-7

Authors:

RW Lee, B Nagler, U Zastrau, R Fäustlin, SM Vinko, T Whitcher, R Sobierajski, J Krzywinski, L Juha, AJ Nelson, S Bajt, K Budil, RC Cauble, T Bornath, T Burian, J Chalupsky, H Chapman, J Cihelka, T Döppner, T Dzelzainis, S Düsterer, M Fajardo, E Förster, C Fortmann, SH Glenzer, S Göde, G Gregori, V Hajkova, P Heimann, M Jurek, FY Khattak, AR Khorsand, D Klinger, M Kozlova, T Laarmann, H-J Lee, K-H Meiwes-Broer, P Mercere, WJ Murphy, A Przystawik, R Redmer, H Reinholz, D Riley, G Röpke, K Saksl, R Thiele, J Tiggesbäumker, S Toleikis, T Tschentscher, I Uschmann, RW Falcone, R Shepherd, JB Hastings, WE White, JS Wark
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A dual-channel, curved-crystal spectrograph for petawatt laser, x-ray backlighter source studies

Review of Scientific Instruments AIP Publishing 80:8 (2009) 083501

Authors:

W Theobald, C Stoeckl, PA Jaanimagi, PM Nilson, M Storm, DD Meyerhofer, TC Sangster, D Hey, AJ MacKinnon, H-S Park, PK Patel, R Shepherd, RA Snavely, MH Key, JA King, B Zhang, RB Stephens, KU Akli, K Highbarger, RL Daskalova, L Van Woerkom, RR Freeman, JS Green, G Gregori, K Lancaster, PA Norreys
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Laser-driven particle acceleration

Nature Photonics 3:8 (2009) 423-425
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Ion structure in dense plasmas: MSA versus HNC

Journal of Physics A: Mathematical and Theoretical 42:21 (2009)

Authors:

K Wünsch, J Vorberger, G Gregori, DO Gericke

Abstract:

We present results for the ionic structure in dense, moderately to strongly coupled plasmas using two models: the mean spherical approximation (MSA) and the hypernetted chain (HNC) approach. While the first method allows for an analytical solution, the latter has to be solved iteratively. Independent of the coupling strength, the results show only small differences when the ions are considered to form an unscreened one-component plasma (OCP) system. If the electrons are treated as a polarizable background, the different ways to incorporate the screening yield, however, large discrepancies between the models, particularly for more strongly coupled plasmas. © 2009 IOP Publishing Ltd.
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Control of 2ω (527 nm) stimulated raman scattering in a steep density gradient plasma

Physics of Plasmas 16:6 (2009)

Authors:

JD Moody, L Divol, DH Froula, SH Glenzer, G Gregori, RK Kirkwood, A MacKinnon, N Meezan, C Niemann, LJ Suter, R Bahr, W Seka

Abstract:

Experiments show that application of laser smoothing schemes including smoothing by spectral dispersion and polarization smoothing effectively suppresses stimulated Raman scattering from a 2ω (527 nm) laser beam in a low average-gain plasma with a steep density gradient. Full-wave simulations reproduce the observed trends in the data and show that the scattering reduction is an indirect result of suppressing active filamentation. © 2009 American Institute of Physics.
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