Highly efficient acceleration and collimation of high-density plasma using laser-induced cavity pressure

Badziak, J.; Borodziuk, S.; Pisarczyk, T.; Chodukowski, T.; Krousky, E.; Masek, K.; Skala, J.; Ullschmied, J.; Yong-Joo Rhee
June 2010
Applied Physics Letters;6/21/2010, Vol. 96 Issue 25, p251502
Academic Journal
An efficient scheme of acceleration and collimation of dense plasma is proposed and examined. In the scheme, a target placed in a cavity coupled with a guiding channel is irradiated by a laser beam introduced into the cavity through a hole and accelerated along the channel by the pressure of the ablating plasma confined in the cavity. Using 1.315 μm, 0.3 ns laser pulse of energy up to 200 J and a thin CH target, it was shown that the energetic efficiency of acceleration in this scheme is an order of magnitude higher than in the case of conventional ablative acceleration.


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