Key words: supercritical water, laser-induced formation, laser pulse, laser technologies, phase diagram.
The work uses the possibility of formation supercritical water (SCW) upon absorption
of a laser pulse with a duration of 8 ns by a 50 nm thick gold film, which is in contact with
water. To estimate the growth of the pressure jump film, we used an approach based on
measuring the acoustic pressure in the far field using a hydrophone based on a lithium
niobate crystal. The temperature jump was estimated using a reference point — the
melting point of gold. It is shown that at a laser pulse energy of 65 mJ, a thin layer of
water in contact with a metal film is in a supercritical state for ~4.5 ns.
doi:10.1134/S1990793121070162