Effect of generation of hard x rays of microsecond duration on a target to Q switching of a laser by a plasma mirror
Batanov V.A., Gochelashvili K.S., Ershov B.V., Malkov A.N., Kolisnichenko P.I., Prokhorov A.M., Fedorov V.B.
When the radiation of a neodymium-glass laser operating in the millisecond-pulse regime was focused on a soild target and in air, generation of "giant" microsecond pulses was observed as a result of the Q switching of the laser by the produced plasma mirror. Microsecond-duration laser plasma that generates hard χ rays with electron temperature Τ e 2-4 keV in air and Τ e =; 3-7 keV on a polyethylene target, was obtained experimentally for the first time. We investigated the reflection, transparency, and gasdynamics of the obtained plasma.