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Hydrodynamic Effects on Thermalisation of Dense Core with Surrounding Corona in Laser‐Imploded Z‐Layered Plasma Target
Author(s) -
Singh D. P.,
Harith M. A.,
Palleschi V.,
Vaselli M.
Publication year - 1991
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.2150310407
Subject(s) - plasma , corona (planetary geology) , thermalisation , atomic physics , core (optical fiber) , mean free path , materials science , physics , flux (metallurgy) , heat flux , electron temperature , laser , electron , heat transfer , optics , mechanics , nuclear physics , astrobiology , venus , metallurgy
Plasma ablation effect on the heat transfer from the superthermal corona to the inner cold dense core in the case of Z layered plasma target is analysed. Thermalisation of core with the surrounding corona depends on the laser wavelength, the ‘flux‐limit’ parameter, width of Z layer and the mean electron temperature of the overlapping region between the core and the corona. The presence of Z layer reduces the electronic mean free path and consequently the width of the plasma ablation zone. Considering the self‐regulation condition for the heating of plasma target, the dependence of core‐corona coupling on the “flux‐limit”, the laser and plasma parameters has been studied.