scholarly journals Near-UV Resonant Two-Photon Ionization Spectroscopy of Gas Phase Guanine:  Evidence for the Observation of Three Rare Tautomers

2006 ◽  
Vol 110 (38) ◽  
pp. 10921-10924 ◽  
Author(s):  
Michel Mons ◽  
François Piuzzi ◽  
Iliana Dimicoli ◽  
Leonid Gorb ◽  
Jerzy Leszczynski
Keyword(s):  
Gas Phase ◽  
Two Photon ◽  
Photon Ionization ◽  
Rare Tautomers

scholarly journals Simulated and Experimental Time-Resolved Photoelectron Spectra of the Intersystem Crossing Dynamics in 2-Thiouracil

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2836 ◽  
Author(s):  
Sebastian Mai ◽  
Abed Mohamadzade ◽  
Philipp Marquetand ◽  
Leticia González ◽  
Susanne Ullrich
Keyword(s):  
Gas Phase ◽  
Single Photon ◽  
Photoelectron Spectra ◽  
Time Resolved ◽  
Single Photon Ionization ◽  
Biologically Relevant ◽  
Two Photon ◽  
Photon Ionization ◽  
Ionic States ◽  
Good Agreement

We report time-dependent photoelectron spectra recorded with a single-photon ionization setup and extensive simulations of the same spectra for the excited-state dynamics of 2-thiouracil (2TU) in the gas phase. We find that single-photon ionization produces very similar results as two-photon ionization, showing that the probe process does not have a strong influence on the measured dynamics. The good agreement between the single-photon ionization experiments and the simulations shows that the norms of Dyson orbitals allow for qualitatively describing the ionization probabilities of 2TU. This reasonable performance of Dyson norms is attributed to the particular electronic structure of 2TU, where all important neutral and ionic states involve similar orbital transitions and thus the shape of the Dyson orbitals do not strongly depend on the initial neutral and final ionic state. We argue that similar situations should also occur in other biologically relevant thio-nucleobases, and that the time-resolved photoelectron spectra of these bases could therefore be adequately modeled with the techniques employed here.

Laser two-photon ionization of aniline in a molecular beam and the bulk gas phase

1979 ◽  
Vol 67 (2-3) ◽  
pp. 351-355 ◽  
Author(s):  
John H. Brophy ◽  
Charles T. Rettner
Keyword(s):  
Gas Phase ◽  
Molecular Beam ◽  
Two Photon ◽  
Photon Ionization

Two-photon ionization of Cs2, Rb2and RbCs using an Ar-ion

1976 ◽  
Vol 9 (5) ◽  
pp. 865-873 ◽  
Author(s):  
E H A Granneman ◽  
M Klewer ◽  
K J Nygaard ◽  
M J Van der Wiel
Keyword(s):  
Two Photon ◽  
Photon Ionization
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