Oxford Centre for High Energy Density Science (OxCHEDS)

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A spectroscopic analysis of near solid density plasmas

Laser and Particle Beams Cambridge University Press (CUP) 17:3 (1999) 477-485

Authors:

R SMITH, GJ TALLENTS, SJ PESTEHE, G HIRST, J LIN, S ROSE, M TAGVIASHVILI
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Fast electron propagation and energy deposition in laser shock compressed plasmas

Laser and Particle Beams Cambridge University Press (CUP) 17:3 (1999) 519-528

Authors:

A BERNARDINELLO, D BATANI, V MASELLA, TA HALL, S ELLWI, M KOENIG, A BENUZZI, J KRISHNAN, F PISANI, A DJAOUI, P NORREYS, D NEELY, S ROSE, MH KEY, P FEWS
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Observation of a highly directional γ-ray beam from ultrashort, ultraintense laser pulse interactions with solids

Physics of Plasmas AIP Publishing 6:5 (1999) 2150-2156

Authors:

PA Norreys, M Santala, E Clark, M Zepf, I Watts, FN Beg, K Krushelnick, M Tatarakis, AE Dangor, X Fang, P Graham, T McCanny, RP Singhal, KWD Ledingham, A Creswell, DCW Sanderson, J Magill, A Machacek, JS Wark, R Allott, B Kennedy, D Neely

Abstract:

Novel measurements of electromagnetic radiation above 10 MeV are presented for ultra intense laser pulse interactions with solids. A bright, highly directional source of γ rays was observed directly behind the target. The γ rays were produced by bremsstrahlung radiation from energetic electrons generated during the interaction. They were measured using the photoneutron reaction [63Cu(γ,n)62Cu] in copper. The resulting activity was measured by coincidence counting the positron annihilation γ rays which were produced from the decay of Cu62. New measurements of the bremsstrahlung radiation at 1019 W cm−2 are also presented.
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Observation of a highly directional γ-ray beam from ultrashort, ultraintense laser pulse interactions with solids

Physics of Plasmas AIP Publishing 6:5 (1999) 2150-2156

Authors:

PA Norreys, M Santala, E Clark, M Zepf, I Watts, FN Beg, K Krushelnick, M Tatarakis, AE Dangor, X Fang, P Graham, T McCanny, RP Singhal, KWD Ledingham, A Creswell, DCW Sanderson, J Magill, A Machacek, JS Wark, R Allott, B Kennedy, D Neely

Abstract:

Novel measurements of electromagnetic radiation above 10 MeV are presented for ultra intense laser pulse interactions with solids. A bright, highly directional source of γ rays was observed directly behind the target. The γ rays were produced by bremsstrahlung radiation from energetic electrons generated during the interaction. They were measured using the photoneutron reaction [63Cu(γ,n)62Cu] in copper. The resulting activity was measured by coincidence counting the positron annihilation γ rays which were produced from the decay of Cu62. New measurements of the bremsstrahlung radiation at 1019 W cm−2 are also presented.
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Generation of focused intensities of 5 × 1019 Wcm−2

Laser and Particle Beams Cambridge University Press (CUP) 17:2 (1999) 341-347

Authors:

CN DANSON, R ALLOTT, G BOOTH, J COLLIER, CB EDWARDS, PS FLINTOFF, SJ HAWKES, MHR HUTCHINSON, C HERNANDEZ-GOMEZ, J LEACH, D NEELY, P NORREYS, M NOTLEY, DA PEPLER, IN ROSS, JA WALCZAK, TB WINSTONE
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