Experimental and theoretical studies of the physical processes occurring in thin plane targets irradiated by intense X-ray pulses |
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Authors: | A É Bugrov I N Burdonskiĭ V V Gavrilov A Yu Gol’tsov E V Grabovskiĭ V P Efremov E V Zhuzhukalo M V Zurin N G Koval’skiĭ V N Kondrashov G M Oleĭnik A I Potapenko A A Samokhin V P Smirnov V E Fortov I N Frolov |
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Institution: | (1) Troitsk Institute for Innovation and Fusion Research, Troitsk, Moscow oblast, 142190, Russia;(2) Institute for High Energy Densities, Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya ul. 13/19, Moscow, 125412, Russia |
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Abstract: | Results are presented from experimental and theoretical studies of the interaction of intense X-ray pulses with different types of plane targets, including low-density (~10 mg/cm3) ones, in the Angara-5-1 facility. It is found experimentally that a dense low-temperature plasma forms on the target surface before the arrival of the main heating X-ray pulse. It is demonstrated that the contrast of the X-ray pulse can be increased by placing a thin organic film between the target and the discharge gap. The expansion velocity of the plasma created on the target surface irradiated by Z-pinch-produced X rays was found to be (3–4) × 106 cm/s. A comparison between the simulation and experimental results confirms the validity of the physical-mathematical model used. |
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