Author :
Azra, A. ; Baclet, P. ; Buchet, J. ; Cahen, J. ; Carlotti, X. ; Guix, R. ; Mouillet, M. ; Trublet, T. ; Le Dain, L. ; Nore, D. ; Pastor, J.F. ; Premont, D. ; Vanpoperynghe, J. ; Veron, L. ; Chernyshev, V.K. ; Volkov, G.I. ; Egoritchev, B.T. ; Ivanov, V.A.
Abstract :
Rayleigh-Taylor instability (RTI) in imploding devices is to be studied if to define ICF targets. Direct use of explosive as a propellant was tested by the past to analyse RTI effects. Drawbacks of corresponding devices are well known: side effects, high areal masses inducing accuracy limitation in transverse radiographic observation, no simple way for pressure level modulation. They can be avoided by the use of magnetic driver and relevant device design, hereafter described. This paper presents results of a joint CEA/VNIIEF experiment dedicated to this topic. Potok type EMG with FOS was used to provide 7-8 MA current law within a few microseconds. Electrical power supply was provided by VNIIEF, target with diagnostics by CEA.
Keywords :
Rayleigh-Taylor instability; explosions; magnetic fields; magnetohydrodynamics; pulse generators; pulsed power supplies; 7 to 8 MA; CEA/VNIIEF experiment; ICF targets; Potok type EMG; Rayleigh Taylor instability; device design; electrical power supply; explosive propellant; imploding devices; magnetic driver; magnetic implosion; transverse radiographic observation; Acceleration; Aluminum; Coils; Conductors; Diagnostic radiography; Electromyography; Explosives; Magnetic analysis; Switches; Tin;
