Laser absorption and energy transfer in foams of various pore structures and chemical compositions

Autor: Limpouch, J., Borisenko, N. G., Demchenko, N. N., Gus'kov, S. Yu., Kasperczuk, A., Khalenkov, A. M., Kondrashov, V. N., Krousky, E., Kuba, J., Masek, K., Merkul'ev, Yu. A., Nazarov, W., Pisarczyk, P., Pisarczyk, T., Pfeifer, M., Renner, O., Rozanov, V. B., Limpouch, J., Borisenko, N. G., Demchenko, N. N., Gus'kov, S. Yu., Kasperczuk, A., Khalenkov, A. M., Kondrashov, V. N., Krousky, E., Kuba, J., Masek, K., Merkul'ev, Yu. A., Nazarov, W., Pisarczyk, P., Pisarczyk, T., Pfeifer, M., Renner, O., Rozanov, V. B.
Zdroj: Journal de Physique IV - Proceedings; June 2006, Vol. 133 Issue: 1 p457-459, 3p
Abstrakt: Interaction of sub-nanosecond intense laser pulses with foams containing fine and large pores has been studied experimentally. Laser penetration and energy transport in the foam material are measured via streaked side-on x-ray slit images. Shock wave transition through the foam is detected via streaked optical self-emission from foil attached on the foam rear side. The shock transition time increases with the pore size, foam density, and also with the contents of high Z additions in plastic foams. Foil acceleration is observed via 3-frame interferometry. Comparison of experimental results with numerical simulations and an analytical model is underway.
Databáze: Supplemental Index