Oxford Centre for High Energy Density Science (OxCHEDS)

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The first experiments on the national ignition facility

J PHYS IV 133 (2006) 43-45

Authors:

OL Landen, S Glenzer, D Froula, E Dewald, LJ Suter, M Schneider, D Hinkel, J Fernandez, J Kline, S Goldman, D Braun, P Celliers, S Moon, H Robey, N Lanier, G Glendinning, B Blue, B Wilde, O Jones, J Schein, L Divol, D Kalantar, K Campbell, J Holder, J McDonald, C Niemann, A Mackinnon, R Collins, D Bradley, J Eggert, D Hicks, G Gregori, R Kirkwood, C Niemann, B Young, J Foster, F Hansen, T Perry, D Munro, H Baldis, G Grim, R Heeter, B Hegelich, D Montgomery, G Rochau, R Olson, R Turner, J Workman, R Berger, B Cohen, W Kruer, B Langdon, S Langer, N Meezan, H Rose, B Still, E Williams, E Dodd, J Edwards, MC Monteil, M Stevenson, B Thomas, R Coker, G Magelssen, P Rosen, P Stry, D Woods, S Weber, S Alvarez, G Armstrong, R Bahr, JL Bourgade, D Bower, J Celeste, M Chrisp, S Compton, J Cox, C Constantin, R Costa, J Duncan, A Ellis, J Emig, C Gautier, A Greenwood, R Griffith, F Holdner, G Holtmeier, D Hargrove, T James, J Kamperschroer, J Kimbrough, M Landon, D Lee, R Malone, M May, S Montelongo, J Moody, E Ng, A Nikitin, D Pellinen, K Piston, M Poole, V Rekow, M Rhodes, R Shepherd, S Shiromizu, D Voloshin, A Warrick, P Watts, F Weber, P Young, P Arnold, L Atherton, G Bardsley, R Bonanno, T Borger, M Bowers, R Bryant, S Buckman, S Burkhart, F Cooper, S Dixit, G Erbert, D Eder, B Ehrlich, B Felker, J Fornes, G Frieders, S Gardner, C Gates, M Gonzalez, S Grace, T Hall, C Haynam, G Heestand, M Henesian, M Hermann, G Hermes, S Huber, K Jancaitis, S Johnson, B Kauffman, T Kelleher, T Kohut, AE Koniges, T Labiak, D Latray, A Lee, D Lund, S Mahavandi, KR Manes, C Marshall, J McBride, T McCarville, L McGrew, J Menapace, E Mertens, D Munro, J Murray, J Neumann, M Newton, P Opsahl, E Padilla, T Parham, G Parrish, C Petty, M Polk, C Powell, I Reinbachs, R Rinnert, B Riordan, G Ross, V Robert, M Tobin, S Sailors, R Saunders, M Schmitt, M Shaw, M Singh, M Spaeth, A Stephens, G Tietbohl, J Tuck, B Van Wonterghem, R Vidal, P Wegner, P Whitman, K Williams, K Winward, K Work, R Wallace, A Nobile, M Bono, B Day, J Elliott, D Hatch, H Louis, R Manzenares, D O'Brien, P Papin, T Pierce, G Rivera, J Ruppe, D Sandoval, D Schmidt, L Valdez, K Zapata, B MacGowan, M Eckart, W Hsing, P Springer, B Hammel, E Moses, G Miller

Abstract:

A first set of shock propagation, laser-plasma interaction, hohlraum energetics and hydrodynamic experiments have been performed using the first 4 beams of the National Ignition Facility (NIF), in support of indirect drive Inertial Confinement Fusion (ICF) and High Energy Density Physics.
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Vulcan petawatt-operation and development

The European Physical Journal Special Topics EDP Sciences 133 (2006) 555-559

Authors:

C Hernandez-Gomez, PA Brummitt, DJ Canny, RJ Clarke, J Collier, CN Danson, AM Dunne, B Fell, AJ Frackiewicz, S Hancock, S Hawkes, R Heathcote, P Holligan, MHR Hutchinson, A Kidd, WJ Lester, IO Musgrave, D Neely, DR Neville, PA Norreys, DA Pepler, CJ Reason, W Shaikh, TB Winstone, BE Wyborn
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High-energy density science with FELs: intense short pulse tunable X-ray sources

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 6261 (2006) 626101-626101-12

Authors:

RW Lee, SJ Moon, HK Chung, RC Cauble, S Glenzer, OL Landen, SJ Rose, HA Scott, G Gregori, D Riley
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Hot surface ionic line emission and cold K-inner shell emission from petawatt-laser-irradiated Cu foil targets

Physics of Plasmas 13:4 (2006)

Authors:

W Theobald, K Akli, R Clarke, JA Delettrez, RR Freeman, S Glenzer, J Green, G Gregori, R Heathcote, N Izumi, JA King, JA Koch, J Kuba, K Lancaster, AJ MacKinnon, M Key, C Mileham, J Myatt, D Neely, PA Norreys, HS Park, J Pasley, P Patel, SP Regan, H Sawada, R Shepherd, R Snavely, RB Stephens, C Stoeckl, M Storm, B Zhang, TC Sangster

Abstract:

A hot, 2 to 3 keV electron temperature surface plasma was observed in the interaction of a 0.7 ps petawatt laser beam with solid copper-foil targets at intensities > 1020 W cm2. Copper K-shell spectra were measured in the range of 8 to 9 keV using a single-photon-counting x-ray charged-coupled-device camera. In addition to Kα and KΒ inner-shell lines, the emission contained the Cu Heα and Lyα lines, allowing the temperature to be inferred. These lines have not been observed previously with ultrafast laser pulses. For intensities less than 3× 1018 W cm2, only the Kα and KΒ inner-shell emissions are detected. Measurements of the absolute Kα yield as a function of the laser intensity are in general agreement with a model that includes refluxing and confinement of the suprathermal electrons in the target volume. © 2006 American Institute of Physics.
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Limits on collective X-ray scattering imposed by coherence

Europhysics Letters 74:4 (2006) 637-643

Authors:

G Gregori, R Tommasini, OL Landen, RW Lee, SH Glenzer

Abstract:

We present the calculation of the threshold for observation of collective plasmon modes in a solid density plasma probed with a partially coherent X-ray source. We find that at lower electron densities (ne ≲ 2 × 1023 cm-3) de-coherence effects pose a stringent limit to the effective divergence as well as bandwidth of the probe source. These results are more restrictive than the usual condition that the probed scale-length must be larger than the screening distance in the plasma. © EDP Sciences.
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