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Generation and characterization of electrons from a gas target irradiated by high-peak-power lasers |
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| Authors: | M Kando S Masuda A Zhidkov A Yamazaki H Kotaki S Kondo T Homma S Kanazawa K Nakajima L -M Chen J Ma Y Hayashi M Mori H Kiriyama Y Akahane N Inoue H Ueda Y Nakai K Tsuji Y Yamamoto J Koga T Hosokai K Kinoshita A Maekawa M Uesaka S V Bulanov T Zh Esirkepov M Yamagiwa T Kimura K Yamakawa T Tajima |
| Institution: | (1) Advanced Photon Research Center, Kansai Research Establishment, Japan Atomic Energy Agency, 8-1 Umemidai, Kizu, Souraku, Kyoto 619-0215, Japan;(2) NERL, The University of Tokyo, 2-22 Shirakata-shirane, Tokai, Naka, Ibaraki 319-1188, Japan;(3) Institute for Chemical Research, Gokasho, Uji, Kyoto 611-0011, Japan;(4) High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan;(5) Kansai Research Establishment, Japan Atomic Energy Research Institute, 8-1 Umemidai, Kizu, Souraku, Kyoto 619-0215, Japan |
| Abstract: | We present the results of electron generation experiments conducted at the Advanced Photon Research Center, Japan Atomic Energy Research Institute, using 23-fs relativistically intense 20-TW tightly focused laser pulses with underdense plasma. We observed electron energies up to 40 MeV characterized by a two-temperature Maxwell distribution. With the help of particle-in-cell simulations, we found that these are due to different plasma wave-breaking processes. A charge of 5 nC/shot was obtained at a small solid angle, which corresponds to high peak current generation. |
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