2-D NUMERICAL STUDY OF THE HYDRODYNAMICS OF LASER ACCELERATED FOILS
The large scale hydrodynamics of laser accelerated thin disks (foils) is studied numerically using a 2-D evolutionary Lagrangian fluid code. The considered laser and target parameters are relevent to direct drive laser fusion, in the classical interaction regime. Peculiar 2-D features observed in the experiments are recovered in the simulations; agreement with experimental data is found for a series of experiments concerning foils of different thickness. Scaling laws for the design of hydrodynamically equivalent experiments are tested, with the effects of non-scaled processes turning out to be fairly small, although observable, and qualitatively in agreement with the relevant theory. Simulations also indicate the adequacy of foil acceleration experiments driven by non-uniform (but controlled) beams to the quantitative study of the smoothing of the irradiation non-uniformities.
Bibliographic Reference: REPORT: RT/FUS/88/25 EN (1988) AVAILABLE FROM SERVIZIO STUDI E DOCUMENTAZIONE, ENEA, CENTRO RICERCHE ENERGIA FRASCATI, C.P. 65 - 00044 FRASCATI, ROMA (IT)
Record Number: 1989128048600 / Last updated on: 1990-11-09
Available languages: en