量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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Ultra-high intensities open a way towards Terawatt and potentially
Petawatt gamma-ray pulses in the so called Gamma Flare regime. We
performed our first experiment towards this regime with the J-KAREN-P
laser operating at intensities close to 10^22 W/cm^2. In this
presentation I will overview the experiment, including very bright hard
x-ray generation (sub-MeV to a few-MeV spectral range), high-order
harmonic generation (30 to 70 eV), and multiple additional diagnostics
revealing information on preplasma (properties of reflected 1st, 2nd,
and 3rd harmonics and back-reflection). I will compare these results
with the integrated HD and PIC simulations.
Overview of the 10^22 Experiment with the J-KAREN-P laser
