Thank you for your answer Twigg.
The approach you propose Twigg would work if the difference between the possible excited states and the ionization barrier energy would be higher than that of the UV photons... this is not our case and the third ionization photon comes from the same UV pulse...
Hello, I work with a spectrometer that does ionizations through laser 2+1 photons resonant ionization (a high power narrow bandwidth laser is tuned to a precise wavelenght so that it allows reaching an excited energy level of a particular element with the sum of two photons absorbed...
Hello,
I am running experiments where materials are heated at high temperatures during tens of hours under high-vacuum conditions. Since what I am investigating lies in the first hundreds of nanometers of the materials, I must take into account (and anticipate) surface sublimation.
Therefore I...