The sensitivity of a family of high-gain inertial confinement fusion (ICF) targets to implosion nonuniformities is studied by means of 2-D numerical simulations. The effect of single-wavelength, low-mode number perturbations of the driving pressure is considered. It is shown that the ratio Q of the 2-D target yield to the yield obtained in the spherically symmetric case is a function of the perturbation parameters as well as of the spark convergence ratio and of the 1-D ignition margin of the target. The scaling of Q with mode number and amplitude is derived; it is also shown that tolerable levels of nonuniformities depend critically on the 1-D ignition margin.
Sensitivity of ICF Reactor Targets to Long-Wavelength Drive Non-Uniformities / Atzeni, Stefano. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - STAMPA. - 7:(1990), pp. 639-644. [10.1209/0295-5075/11/7/010]
Sensitivity of ICF Reactor Targets to Long-Wavelength Drive Non-Uniformities
ATZENI, Stefano
1990
Abstract
The sensitivity of a family of high-gain inertial confinement fusion (ICF) targets to implosion nonuniformities is studied by means of 2-D numerical simulations. The effect of single-wavelength, low-mode number perturbations of the driving pressure is considered. It is shown that the ratio Q of the 2-D target yield to the yield obtained in the spherically symmetric case is a function of the perturbation parameters as well as of the spark convergence ratio and of the 1-D ignition margin of the target. The scaling of Q with mode number and amplitude is derived; it is also shown that tolerable levels of nonuniformities depend critically on the 1-D ignition margin.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.