Behavior specificities of the plasma in the REB - polymeric anode interactions.

2nd Conference on Plasma & Laser Research and Technologies

Ananyev, S.S.^1 ; Dan'Ko, S.A.^1 ; Kazakov, E.D.^1 ; Kalinin, Yu G.^1 ; Kurilo, A.A.^1 ; Strizhakov, M.G.^1

National Research Center, Kurchatov Institute, Academician Kurchatov Square 1, Moscow

123182, Russia^1

关键词: High power density;    High-current generator;    High-voltage diodes;    Optical streak cameras;    Plasma dynamics;    Polymeric anodes;    Relativistic electron beam;    Testing materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/747/1/012003/pdf
DOI  :  10.1088/1742-6596/747/1/012003

来源: IOP

【 摘 要 】

To study Relativistic Electron Beam (REB) interaction with a set of polymeric targets we have made experiments for the investigation of the plasma dynamics in high-voltage diode of high-current generator. It is necessary for applied goals, such as correction of mathematical models of high power density deposition in the matter, for testing materials reaction under the powerful impulse of ionizing radiation, etc. An electron-optical streak camera (EOC) was used to measure the velocity of the visible light border of the plasma glowing. It was estimated to be from 10 to 35 km/s at the energy-release density in range of 200 - 800 J/cm2. In a few of experiments, besides regular motion of contrast border in the direction from electrodes to the middle of the diode, the motion from the middle to the periphery of the high-voltage diode with velocity up to 500 km/s was observed. It was by an order of magnitude greater than regular one.