The behavior of tantalum under ultrashort loads induced by femtosecond laser

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Ashitkov, S.I.^1 ; Komarov, P.S.^1 ; Struleva, E.V.^1 ; Agranat, M.B.^1 ; Kanel, G.I.^1 ; Khishchenko, K.V.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

关键词: Picosecond range;    Single shots;    Spectral interferometry;    Submicron;    Surface velocity;    Tantalum films;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012001/pdf
DOI  :  10.1088/1742-6596/653/1/012001

来源: IOP

【 摘 要 】

We studied the shock-wave and ablation phenomena in tantalum films of submicron thicknesses irradiated by femtosecond laser pulses. The single-shot spectral interferometry was used for continuous diagnostics of movement in a picosecond range both the frontal and rear surfaces of a sample. Measured displacement histories were converted into surface velocity histories. As a result, the new data on shear and tensile strength have been obtained for solid and molten tantalum at strain rate ∼ 109s-1.