화학공학소재연구정보센터
Applied Surface Science, Vol.197, 656-660, 2002
Cluster ion control by simultaneous irradiations of femtosecond laser and nanosecond laser pulses
Generation of multiply charged ions and molecular ions have been investigated using simultaneous irradiation of high intensity and ultrashort pulse of Ti:sapphire laser and fourth harmonics of Q-switched nanosecond pulse of Nd:YAG laser on carbon targets [Morimoto et al., in: Proceedings of the 13th International Conference on High-Power Particles Beams (BEAMS2000),Vol. PB-89, Nagaoka, 2000, p. 359; Toyoda et al., in: Proceedings of the 8th International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference (GCL-HPL2000), Vol. P1.60,2000, p. 101]. The ion current waveforms have been analyzed by means of time-of-flight (tof) mass measurement. Simultaneous irradiation of high intensity and ultrashort pulse of Ti:sapphire laser and fourth harmonics of Q-switched nanosecond pulse of Nd:YAG laser on carbon targets was found to generate molecular ions of carbon. (C) 2002 Published by Elsevier Science B.V.