MOLECULAR ION DETECTION BY A LASER INDUCED CHANGE IN MOBILITY.
R.E. Walkup, R.W. Dreyfus, et al.
Colloque International du CNRS 1982
We have used laser-induced fluorescence to measure the energy distributions of Al atoms and AlO molecules produced by excimer laser ablation of Al 2O3. Excimer laser fluences close to the threshold for ablation were used to minimize the effects of gas phase collisions. The kinetic energies of both species were high, ∼4 eV for Al and ∼1 eV for AlO, but the AlO rotational and vibrational energies were quite low, corresponding to a temperature of ∼600 K. These results rule out thermal vaporization and provide indirect support for an electronic ablation mechanism.
R.E. Walkup, R.W. Dreyfus, et al.
Colloque International du CNRS 1982
R.W. Dreyfus, R.T. Hodgson
Physical Review A
Roger Kelly, R.W. Dreyfus
Surface Science
R.W. Dreyfus, Roger Kelly, et al.
Nuclear Inst. and Methods in Physics Research, B