Investigation of the compression of high-aspect targets irradiated with a laser pulse of the second harmonic of the Iskra-4 iodine laser

Theoretical modeling of experiments on the compression of targets under exploding pusher shell conditions, carried out at the Iskra-4 facility with the iodine laser pulsed at its fundamental frequency (λ= 1.315 μm) showed a correlation between the increase in the discrepancy between the calculated and experimental neutron yields and increase of the aspect ratio of the shell of the target used in the experiment. After conversion of the Iskra-4 facility to generate the second harmonic and improving the beam uniformity in the region of the target, a series of experiments was carried out on the compression of high-aspect targets As > 300. In this series a record neutron yield for this installation, N = 6 x 107, was obtained in experiments with glass-shell targets