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Characterization of preformed plasmas with an interferometer for ultra-short high-intensity laser-plasma interactions |
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| Authors: | A Sagisaka H Daido K Ogura S Orimo Y Hayashi M Nishiuchi M Mori K Matsukado A Fukumi Z Li S Nakamura K Takagaki H Hazama M Suzuki T Utsumi SV Bulanov T Esirkepov |
| Institution: | (1) Advanced Photon Research Center, Kansai Research Establishment, Japan Atomic Energy Research Institute, Umemidai 8-1, Kizu, 619-0215 Kyoto, Japan;(2) National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage, Chiba, Japan;(3) Institute for Chemical Research, Kyoto University, Uji, Kyoto, Japan;(4) General Physics Institute, Russian Academy of Sciences, Moscow, Russia;(5) Moscow Institute of Physics and Technology, Dolgoprudnyi, Russia |
| Abstract: | The evolution of an Al preformed plasma produced by a prepulse was observed before and after the arrival of the main pulse by an interferometer using a femtosecond probe pulse. A central density depression due to the ponderomotive force of the main laser pulse in the preformed plasma with a  100  m scale length was clearly visible after the main pulse irradiation at an intensity of 5×1016 W/cm2. The temporal profiles of the prepulse, characterized by a cross-correlation in conjunction with a precise density profile measurement by an interferometer, contribute to the better understanding of femtosecond laser-matter interactions. PACS 52.38.-r; 52.50.Jm; 52.70.-m |
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