Strength of iron melt at high extension rate during femtosecond laser ablation

31st International Conference on Equations of State for Matter

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

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

125412, Russia^1

关键词: Extension rates;    Interferometric techniques;    Iron melt;    Molten iron;    Picosecond range;    Target surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012098/pdf
DOI  :  10.1088/1742-6596/774/1/012098

来源: IOP

【 摘 要 】

Time and spatial-resolved interferometric technique in a picosecond range was used for continuous registration of motion of iron target surface heated by femtosecond laser pulse. The magnitude of the tensile stress 0.5-1.3 GPa leading to fracture of molten iron at the strain rate of ∼ 109s-1was experimentally determined from the measured velocity histories of the spalled layer movement.