Isochoric heating of low-Z, reduced-mass targets with high intensity laser pulse
2010
Energy deposition by hot electrons in ultra-short, high intensity laser produced dense plasma was investigated by X-ray spectroscopy. Kα lines from partially ionized chlorine embedded in a triple layered, reduced mass target was observed to derive electron temperatures. Fast electrons generated by intense laser were confined in the smaller mass target, showing efficient increase of temperature. Heating efficiency by electron refluxing was one percent of laser energy and surface heating is significant at the laser intensity of ~ 1×1018 W/cm2.
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