Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
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Energy Transportation by MeV Hot Electrons in Fast Ignition Plasma Driven with LFEX PW Laser
Zhe ZHANGHiroaki NISHIMURAShinsuke FUJIOKAYasunobu ARIKAWAMitsuo NAKAIHideo NAGATOMOHiroyuki SHIRAGASadaoki KOJIMAAlessio MORACENoriaki MIYANAGAJunji KAWANAKAYoshiki NAKATATakahisa JITSUNOHiroshi AZECHITetsuo OZAKIHui CHENJaebum PARKGerald Jackson WILLIAMSTomoyuki JOHZAKIAtsushi SUNAHARA
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2014 Volume 9 Pages 1404118

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Abstract

Implosion and heating experiments with the scheme of fast ignition (FI) have been performed on Gekko-XII and LFEX laser platform at the Institute of Laser Engineering in Osaka University. A cone-guided CD-shell has been used as a base-line target for the fast ignition realization. The information about energy transfer from LFEX petawatt (PW) laser is quantitatively studied with an absolute diagnostics and a fast electron trajectory simulation. The transfer efficiency (ηTE) is estimated for a planar interaction as a reference and for several types of guiding-cone. As a general trend, the guiding-cone enhanced the ηTE by a factor of 3 comparing with the planar case.

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© 2014 by The Japan Society of Plasma Science and Nuclear Fusion Research
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