J. Phys. IV France 11 (2001) Pr2-563-Pr2-566
Jetlike visible emission from preplasma pumped by a longitudinal picosecond laser pulseT. Ozaki, K. Yamamoto and H. Kuroda
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
We report on the observation of jetlike visible emission from molybdenum plasma, which is pumped by a high-intensity 2-ps-duration Nd : phosphate glass laser pulse. These jets are found to extend over an unusually long length of several millimeters. The structure appears only at longitudinal pump intensities between 5x1014 W/cm2 and 7.5x1014 W/cm2, and the temporal duration of the jetlike emission is measured to be 500 ns.
© EDP Sciences 2001