High-speed cobalt film fracture under the action of loads created by a picosecond laser pulse

The movement of the rear free surface of submicron cobalt film samples exposed to picosecond laser pulses with different energy densities was studied experimentally. The displacement of the free rear surface of the sample determined in the picosecond range in single-pulse mode using spectral interferometry. Data were obtained on the spall strength cobalt in a condensed state for a strain rate of $\sim10^9$ s$^1$.