Laser Consortium, Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom.
Phys Rev Lett. 2010 Nov 12;105(20):205003. doi: 10.1103/PhysRevLett.105.205003. Epub 2010 Nov 10.
We report on experimental investigations into strong, laser-driven, radiative shocks in cluster media. Cylindrical shocks launched with several joules of deposited energy exhibit strong radiative effects including rapid deceleration, radiative preheat, and shell thinning. Using time-resolved propagation data from single-shot streaked Schlieren measurements, we have observed temporal modulations on the shock velocity, which we attribute to the thermal cooling instability, a process which is believed to occur in supernova remnants but until now has not been observed experimentally.
我们报告了在团簇介质中强激光驱动辐射激波的实验研究。用几焦耳的沉积能量发射的圆柱形激波表现出强烈的辐射效应，包括快速减速、辐射预热和外壳变薄。利用单次条纹纹影测量的时间分辨传播数据，我们观察到了激波速度的时间调制，我们将其归因于热冷却不稳定性，这一过程被认为发生在超新星遗迹中，但直到现在还没有在实验中观察到。
