Study of low-lying electronic states of ozone by anion photoelectron spectroscopy of O−3

Abstract

The low-lying electronic states of ozone are studied using anion photoelectron spectroscopy of 0,. The spectra show photodetachment transitions from 0; to the r? 'A, ground state and to the five lowest lying electronic states of the ozone molecule, namely the 3A2, 3B,, 'A2, 3B t , and 'B t states. The geometry of the ozonide anion determined from a Franck-Condon analysis of the O3 X 'A 1 ground state spectrum agrees reasonably well with previous work. The excited state spectra are dominated by bending vibrational progressions which, for some states, extend well above the dissociation asymptote without noticeable lifetime broadening effects. Preliminary assignments are based upon photoelectron angular distributions and comparison with ab initio calculations. None of the excited states observed lies below the ground state dissociation limit of O3 as suggested by previous experimental and theoretical results.

Spectroscopic studies of ozone- the Earth's UV filter

“…The vibrational structure can be plausibly, but not unambiguously divided into two progressions labelled I and II in ® gure 8. The ® rst has an origin at 1× 29 6 0× 1 eV in excellent agreement with the data of Arnold et al (1994) and Anderson and Mauersberger (1994) and can be ascribed to the 3 B 1 state. The second progression may have an origin at 1× 528 6 0× 01 eV or 1× 45 eV the latter value being in better agreement with Arnold et al and Anderson and Mauersberger and assigned to the 3 B 1 state.…”

“…They proposed that the Wulf band was attributable to the 3 A 2 , a prediction supported by the theory of Braunstein et al (1995). They also determined the adiabatic energies of the 3 A 2 , 3 B 2 and 3 B 1 states with an accuracy of < 0× 05 eV, their results being in excellent agreement with those values derived from the anion photoelectron spectroscopy of Arnold et al (1994). Nevertheless fundamental questions remained, the most important of which was whether any of these states are capable of supporting vibronic excitation and thus are at least temporarily bound.…”

Vibrational Relaxation of Oxygen by O2–O Collision

“…As noted above, among these PESs, the 1 1 A 0 PES corresponds to the ground electronic state of the ozone molecule, and hence, some knowledge of the PES has been obtained experimentally in terms of studying the ozone molecule. 8,9) …”

Initial surface reactions in atomic layer deposition of HfSixOy and HfO2: A comparative study by density functional theory

“…Thus, it is becoming very important for the initiating dissociation of O 3 . The experimental dissociation energy (E diss ) of O 3 into O 2 + O( 3 P) [37] is measured to be 26.1 ± 0.4 kcal/mol, which is far lower than those for H 2 O: E diss (H-OH) = 117.59 ± 0.07 kcal/mol, E diss (OH) = 101.76 ± 0.07 kcal/mol [38]. The atomic oxygen can therefore be obtained more easily by the dissociation of O 3 than Table 1. that of H 2 O.…”