Characterization of MeV Electron Generation using 527 nm Laser Pulses for Fast Ignition

R. Fedosejevs, D. Higginson, Hal Friesen, Anna Sorokovikova, L. C. Jarrott, A. Link, G.E. Kemp, Daniel Hey, Y. Ping, Ian Andrew Bush, H.F. Tiedje, M.Z. Mo, Y.Y. Tsui, B. Westover, Farhat Beg, Kramer Akli, Richard Freeman, Linn Van Woerkom, Douglas Schumacher, C. ChenHarry McLean, Prav Patel, T. Doeppner, Richard B. Stephens, John Richard Pasley

Research output: Contribution to conferenceAbstract

Abstract

We investigate electron generation at intensities of relevance to Fast Ignition using second harmonic laser pulses, motivated by the need to understand the wavelength scaling of the processes and also the ability to obtain clean, prepulse free, target interaction conditions. 700fs duration pulses with peak intensities up to 5 x 1019 W cm-2 were employed at the TITAN laser facility at LLNL. Both planar and cone target geometries were studied using copper k-alpha imaging of tracer layers, Bremsstrahlung x-ray emission measurements of conversion efficiency and beam divergence and magnetic spectrometer measurements of escaping electrons to characterize the electron generation and propagation. Results of electron temperature and angular divergence will be presented.
Original languageEnglish
Number of pages1
Publication statusPublished - Oct 2011
EventAmerican Physical Society, 53rd Annual Meeting of the APS Division of Plasma Physics - Salt Palace Convention Center., Salt Lake City, United States
Duration: 14 Nov 201118 Nov 2011
Conference number: 53
https://www.aps.org/meetings/meeting.cfm?name=DPP11

Conference

ConferenceAmerican Physical Society, 53rd Annual Meeting of the APS Division of Plasma Physics
Abbreviated titleAPS-DPP
Country/TerritoryUnited States
CitySalt Lake City
Period14/11/1118/11/11
Internet address

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