Oxford Centre for High Energy Density Science (OxCHEDS)

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Radiography measurements of direct drive imprint in thin Al foils using a bright XUV laser

INST PHYS CONF SER (1996) 509-511

Authors:

PJ Warwick, A Demir, DH Kalantar, MH Key, NS Kim, CLS Lewis, J Lin, AG MacPhee, D Neely, BA Remington, S Rose, R Smith, GJ Tallents, JS Wark, SV Weber, E Wolfrum, J Zhang

Abstract:

A saturated XUV laser operating on the J=0-1, 19.6nm transition of Ne-like Germanium provided an excellent source to provide in-line backlighting for 2D imaged radiography. The imprint of a direct drive laser beam and subsequent Rayleigh-Taylor growth of perturbations in a 2 mu m thick Al foil, irradiated with 0.53 mu m laser light at 2-8x10(12) W/cm(2), was investigated. Measurements are presented for the modulation Slue to random phase plate static speckle, SSD smoothed and ISI smoothed speckle. In addition we present a study of single mode optical imprint generated by the interference pattern of a double rectangular aperture.

Research on compact, bright, coherent x-ray sources at RAL

P SOC PHOTO-OPT INS 2778 (1996) 1199-1200

Authors:

J Zhang, A Behjat, AE Dangor, C Danson, A Demir, L Dwivedi, EE Fill, M Holden, PB Holden, MH Key, CLS Lewis, YL Li, P Loukakos, AG MacPhee, S Moustaizis, D Neely, PA Norreys, GJ Pert, SA Ramsden, SJ Rose, D Schlogl, YF Shao, J Steingruber, GJ Tallents, O Thomas, F Walsh, JS Wark, YL You, M Zepf, P Zeitoun

Saturated output of a Ge XXIII x-ray laser at 19.6 nm

PHYSICAL REVIEW A 54:6 (1996) R4653-R4656

Authors:

J Zhang, PJ Warwick, E Wolfrum, MH Key, C Danson, A Demir, S Healy, DH Kalantar, NS Kim, CLS Lewis, J Lin, AG MacPhee, D Neely, J Nilsen, GJ Pert, R Smith, GJ Tallents, JS Wark

Spatial and temporal coherence measurements of harmonics of a 1053 nm, 2.5 ps laser interacting with solid surfaces

INST PHYS CONF SER (1996) 452-454

Authors:

J Zhang, M Zepf, PA Norreys, AE Dangor, M Bakarezos, CN Danson, A Dyson, AP Fews, P Gibbon, P Lee, P Loukakos, MH Key, S Moustaizis, D Neely, FN Walsh, JS Wark

Abstract:

We present measurements of the spatial and temporal coherence lengths of the 4th harmonic of a 1053 nm, 2.5 ps laser generated during high intensity (up to 10(19) wcm(-2)) interactions with a solid target. Coherence lengths were measured by use of a Young's double slit interferometer. The effective source size, as defined by the Van Cittert-Zernicke theorem, was found to be 10 similar to 12 mu m, and the coherence time was observed to be in the range 0.02 similar to 0.4 ps.

Spectroscopy of compressed high energy density matter

PHYSICAL REVIEW E 53:6 (1996) 6396-6402

Authors:

NC Woolsey, A Asfaw, B Hammel, C Keane, CA Back, A Calisti, C Mosse, R Stamm, B Talin, JS Wark, RW Lee, L Klein