Prof Peter Norreys FInstP;: Publications

Experimental studies of the advanced fast ignitor scheme

PHYSICS OF PLASMAS 7:9 (2000) PII [S1070-664X(00)02809-3]

Authors:

PA Norreys, R Allott, RJ Clarke, J Collier, D Neely, SJ Rose, M Zepf, M Santala, AR Bell, K Krushelnick, AE Dangor, NC Woolsey, RG Evans, H Habara, T Norimatsu, R Kodama

Photonuclear physics when a multiterawatt laser pulse interacts with solid targets

PHYSICAL REVIEW LETTERS 84:5 (2000) 899-902

Authors:

KWD Ledingham, I Spencer, T McCanny, RP Singhal, MIK Santala, E Clark, I Watts, FN Beg, M Zepf, K Krushelnick, M Tatarakis, AE Dangor, PA Norreys, R Allott, D Neely, RJ Clark, AC Machacek, JS Wark, AJ Cresswell, DCW Sanderson, J Magill

Focused intensities of 1020 Wcm-2 with the upgraded Vulcan CPA interaction facility

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 3492 (1999) 82-93

Authors:

Colin N Danson, Ric M Allott, S Angood, G Booth, JL Collier, AR Damerell, Christopher B Edwards, PS Flintoff, J Govans, S Hancock, P Hatton, SJ Hawkes, MHR Hutchinson, Michael H Key, C Hernandez-Gomez, John Leach, W Lester, David Neely, Peter A Norreys, MM Notley, David A Pepler, CJ Reason, DA Rodkiss, Ian N Ross, WT Toner, M Trentelman, JA Walczak, RA Wellstood, TB Winstone, RWW Wyatt, BE Wyborn

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.

Studies of the fast ignition route to inertial confinement fusion at the Rutherford Appleton Laboratory

FUSION ENG DES 44 (1999) 239-243

Authors:

PA Norreys, M Bakarezos, L Barringer, M Borghesi, FN Beg, M Castro-Colins, D Chambers, AE Dangor, CN Danson, A Djaoui, AP Fews, R Galliard, P Gibbon, L Gizzi, ME Glinsky, BA Hammel, MH Key, P Lee, P Loukakos, AJ MacKinnon, C Meyer, J Meyer-ter-Vehn, S Moustaizis, SG Preston, A Pukhov, SJ Rose, M Tatarakis, JS Wark, O Willi, M Zepf, J Zhang

Abstract:

The Rutherford Appleton Laboratory has been at the forefront of investigations into the physics associated with the fast ignition concept for inertial confinement fusion. This scheme involves complex laser-plasma processes, the theoretical understanding of which relies heavily on particle-in-cell calculations. In this paper, three experiments displaying quantitative agreement with detailed multi-dimensional PIC calculations are reviewed: hole-boring velocity measurements; relativistic self-focusing; and harmonic generation from plasma surfaces. Qualitative agreement of hot electron temperature measurements with PIC simulations are also discussed. The authors believe these results are very encouraging for the fast ignition concept. (C) 1999 Published by Elsevier Science S.A. All rights reserved.

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