Dynamic response of molybdenum to ultrafast laser induced shock loading

Abstract

Molybdenum is a bcc transitional metal whose high-pressure behavior has attracted considerable experimental and theoretical interest. In the present paper, a chirped pulse interferometry was applied to study shock waves evolution in molybdenum under ultrafast loading created by a femtosecond laser. The elastic compression up to 17 GPa on a submicron propagation distance was achieved. Also the spall strength of molybdenum film samples was estimated to be 30-40% of ultimate tensile strength value at the strain rate of 109 s-1.