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DenisH
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- TL;DR Summary
- I am searching to anticipate ionization yield in 2+1 photons resonant ionization as a function of the excited state. <moved>
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 concomitantly by the atom, then a third photon allows ionization).
I am trying to anticipate with excited state would lead to the better yields of ionization. I imagine ionization efficiency will depend on the cross-section of absorption of the photons by the element and by the life duration of the excited state (as far as it as a life duration higher than the time delay before statistically getting hit by a third photon).
My question thus are : can the cross-section and/or "half-lives" of energy levels be determined from the nature of the electronic transition and its energy? At least comparatively as a function of the state? Will the cross-section be energy or level dependant?
I am trying to anticipate with excited state would lead to the better yields of ionization. I imagine ionization efficiency will depend on the cross-section of absorption of the photons by the element and by the life duration of the excited state (as far as it as a life duration higher than the time delay before statistically getting hit by a third photon).
My question thus are : can the cross-section and/or "half-lives" of energy levels be determined from the nature of the electronic transition and its energy? At least comparatively as a function of the state? Will the cross-section be energy or level dependant?