Title :
Study of colliding-shell configurations to reduce the effects of magnetic Rayleigh-Taylor on imploding liners
Author :
Faehl, R.J. ; Atchison, W.L. ; Keinigs, R.K. ; Lindemuth, I.R. ; Reinovsky, R.E.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
We present computational studies on the use of colliding shell configurations to mitigate the effects of magnetic Rayleigh-Taylor (MRT) on the inner liner. Two-dimensional MHD calculations of liners have been performed that have pre-formed, single wavelength perturbations. Specifying the perturbation allows us to follow the evolution of a specific disturbance with little ambiguity. This technique has been confirmed in numerous experiments on the PEGASUS II machine. An inner liner is located at a smaller radius than the outer, driver liner. The radius is chosen so that the perturbation will grow to large amplitude before impact. To minimize shock effects, a low-density pad is placed between the two liners. This pad may be either plastic or a magnetic field. Results of the computational study are presented.
Keywords :
Rayleigh-Taylor instability; exploding wires; fusion reactor ignition; plasma magnetohydrodynamics; PEGASUS II machine; colliding-shell configurations; imploding liners; inner liner; low-density pad; magnetic Rayleigh-Taylor effects reduction; magnetic field; plastic pad; pre-formed single wavelength perturbations; shock effects minimisation; two-dimensional MHD calculations; Acceleration; Electric shock; Equations; Kinetic energy; Laboratories; Lagrangian functions; Magnetic analysis; Magnetohydrodynamics; Numerical simulation; Plastics;
Conference_Titel :
Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5498-2
DOI :
10.1109/PPC.1999.825488