We report on the design and first results from experiments looking at the formation of radiative shocks on the Shenguang-Ⅱ(SG-Ⅱ) laser at the Shanghai Institute of Optics and Fine Mechanics in ***-heating of a two-l...
We report on the design and first results from experiments looking at the formation of radiative shocks on the Shenguang-Ⅱ(SG-Ⅱ) laser at the Shanghai Institute of Optics and Fine Mechanics in ***-heating of a two-layer CH/CH-Br foil drives a~40 km/s shock inside a gas cell filled with argon at an initial pressure of 1 *** use of gas-cell targets with large(several millimetres) lateral and axial extent allows the shock to propagate freely without any wall interactions,and permits a large field of view to image single and colliding counter-propagating shocks with time-resolved,pointprojection X-ray backlighting(~20 μm source size,4.3 keV photon energy).Single shocks were imaged up to 100 ns after the onset of the laser drive,allowing to probe the growth of spatial nonuniformities in the shock *** results are compared with experiments looking at counter-propagating shocks,showing a symmetric drive that leads to a collision and stagnation from~40 ns *** present a preliminary comparison with numerical simulations with the radiation hydrodynamics code ARWEN,which provides expected plasma parameters for the design of future experiments in this facility.
We report on the design and first results from experiments looking at the formation of radiative shocks on the ShenguangII(SG-II)laser at the Shanghai Institute of Optics and Fine Mechanics in ***-heating of a two-lay...
详细信息
We report on the design and first results from experiments looking at the formation of radiative shocks on the ShenguangII(SG-II)laser at the Shanghai Institute of Optics and Fine Mechanics in ***-heating of a two-layer CH/CH–Br foil drives a∼40 km/s shock inside a gas cell filled with argon at an initial pressure of 1 *** use of gas-cell targets with large(several millimetres)lateral and axial extent allows the shock to propagate freely without any wall interactions,and permits a large field of view to image single and colliding counter-propagating shocks with time-resolved,pointprojection X-ray backlighting(∼20µm source size,4.3 keV photon energy).Single shocks were imaged up to 100 ns after the onset of the laser drive,allowing to probe the growth of spatial nonuniformities in the shock *** results are compared with experiments looking at counter-propagating shocks,showing a symmetric drive that leads to a collision and stagnation from∼40 ns *** present a preliminary comparison with numerical simulations with the radiation hydrodynamics code ARWEN,which provides expected plasma parameters for the design of future experiments in this facility.
暂无评论