Scientific Results

Measuring fast electron distribution functions at intensities up to 10(21) W cm(-2)

Year: 2011

Authors: Booth N., Clarke R.J., Doria D., Gizzi L.A., Gregori G., Hakel P., Koester P., Labate L., Levato T., Li B., Makita M., Mancini R.C., Pasley J., Rajeev P.P., Riley D., Robinson A.P.L., Wagenaars E., Waugha J.N., Woolsey N.C.

Autors Affiliation: Department of Physics, University of York, Heslington, York YO10 5DD, UK; Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QN, UK; Department of Physics, University of Oxford OX4 1PJ, UK; ILIL-IPCF, Consiglio Nazionale delle Richerche, Pisa, Italy; Department of Physics, College of Science, University of Nevada, Reno, NV 89557-0208, USA; Department of Physics and Mathematics, Queen’s University Belfast, Belfast BT1 4NN, UK

Abstract: Here we present results from ultra-intense experiments demonstrating the viability of polarization spectroscopy as a diagnostic of the electron return current and spatial anisotropy and distribution function of the fast electron beam. The measurements extend to ultra-relativistic intensities of 10(21) W cm(-2), including laser-plasma interaction regimes important for fast ignition studies, for example HiPER, and the development of secondary sources from next generation ultra-short pulse, ultra-intense laser facilities such as Astra-Gemini and ELI. As an in situ diagnostic, spectroscopic measurements are vital to understanding fast electron beams, enabling extrapolation of results to define fast ignition inertial confinement fusion and secondary source facilities. (C) 2011 Elsevier B.V. All rights reserved.


Volume: 653 (1)      Pages from: 137  to: 139

KeyWords: ICF; fast ignition;
DOI: 10.1016/j.nima.2010.12.199

Citations: 3
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