TY - JOUR
T1 - Intensity perturbations in the v(+)=2, 1 and 0 bands of the zero-kinetic-energy (ZEKE) photoelectron-spectrum of N2
AU - Wilson, S.H.S.
AU - Rednall, RJ
AU - Fielding, HH
AU - Merkt, F
AU - Softley, Timothy
PY - 1993/12/1
Y1 - 1993/12/1
N2 - The observation of the ν+ = 2 band in the first electronic system of the one-photon zero-kinetic-energy (ZEKE) photoelectron spectrum of N2 is reported for the first time. The band was recorded using a coherent extreme ultraviolet source, tunable around 130 000 cm−1; the use of a new two-photon resonance at 98 855.87 cm−1 for sum-frequency mixing in krypton is discussed. The new ZEKE photoelectron band shows marked intensity perturbations, similar to the ν+ = 1 band previously reported, and these are attributed to a final-state interaction with a Rydberg state belonging to the A 2Πu series. A calculation to model the interactions in both the ν+ = 1 and ν+ = 2 bands is presented. A new calculation of rotational autoionization rates is also described for Rydberg levels converging to the ν+ = 0 limit; these rates determine the observed intensity perturbations in the O and M branches of the ν+ = 0 band of the ZEKE spectrum.
AB - The observation of the ν+ = 2 band in the first electronic system of the one-photon zero-kinetic-energy (ZEKE) photoelectron spectrum of N2 is reported for the first time. The band was recorded using a coherent extreme ultraviolet source, tunable around 130 000 cm−1; the use of a new two-photon resonance at 98 855.87 cm−1 for sum-frequency mixing in krypton is discussed. The new ZEKE photoelectron band shows marked intensity perturbations, similar to the ν+ = 1 band previously reported, and these are attributed to a final-state interaction with a Rydberg state belonging to the A 2Πu series. A calculation to model the interactions in both the ν+ = 1 and ν+ = 2 bands is presented. A new calculation of rotational autoionization rates is also described for Rydberg levels converging to the ν+ = 0 limit; these rates determine the observed intensity perturbations in the O and M branches of the ν+ = 0 band of the ZEKE spectrum.
U2 - 10.1016/0368-2048(93)01834-2
DO - 10.1016/0368-2048(93)01834-2
M3 - Article
SN - 0368-2048
VL - 66
SP - 151
EP - 166
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
ER -