Symmetry-dependent vibrational excitation in N 1s photoionization of N2: experiment and theory.

Title Symmetry-dependent vibrational excitation in N 1s photoionization of N-2: Experiment and theory

Vibrationally resolved partial cross sections and asymmetry parameters for carbon K-shell photoionization of the CO2 molecule

We have measured the vibrationally resolved partial cross sections σv′ 1 and asymmetry parameters βv′ 1 for C K-shell photoionization of the CO2 molecule in the u shape resonance region above the C K-shell ionization threshold. The positions of both the maxima of σv′ 1 and the minima of βv′ 1 move towards the C K-shell threshold with increasing symmetric stretching vibrational excitation v′ 1 i...

Symmetry-resolved vibrational spectroscopy for the C 1s(-1)2 pi(u) Renner-Teller pair states in CO(2).

Symmetry-resolved excitation spectra have been measured for the Renner-Teller pair states A(1) and B(1) split from the core-excited C 1s(-1)2 pi(u) state in CO(2). A vibrational progression with the spacings of approximately 145 meV is found in both the A(1) and B(1) spectra at different energies and assigned to the symmetric stretching mode caused in the B(1) linear state, with the help of ab ...

Electron-impact resonant vibrational excitation and dissociation processes involving vibrationally excited N2 molecules

Resonant vibrational excitation cross sections and the corresponding rate coefficients for electron–N2 collisions occurring through the N − 2 (X 2 g) resonant state are reviewed. New calculations are performed using accurate potential energy curves for the N2 electronic ground state, taken from the literature, and for the N2 resonant state, obtained from R-matrix calculations. The calculations ...

Mode-dependent enhancement of photodissociation and photoionization in a seven atom molecule.

We report the first experimental demonstration of vibrational mode-dependent enhancement in photodissociation and photoionization of a seven atom molecule, methylamine (CH(3)NH(2)). The fundamental C-H stretches and the overtones or combinations of CH(3) bends were prepared via stimulated Raman excitation (SRE) prior to their 243.135 nm one-photon dissociation or two-photon ionization. The phot...