Photofragment spectroscopy and dynamics of the visible photodissociation of ozone

Journal Article · Mon Aug 15 00:00:00 EDT 1983 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.446019· OSTI ID:5854661

Moore, D S; Bomse, D S; Valentini, J J

We report collision-free coherent anti-Stokes Raman scattering (CARS) spectra of the O/sub 2/ fragment formed in the photodissociation of ozone at 532 and 578 nm. From these spectra we have extracted the nascent electronic, vibrational, rotational, and translational energy distributions of the photofragments. The O/sub 2/ fragment is produced only in the ground /sup 3/..sigma../sup -//sub g/ electronic state, even though the /sup 1/..delta../sub g/ excited state is energetically allowed. High (Jroughly-equal23 to 51) rotational states in the first five vibrational levels of O/sub 2/(/sup 3/..sigma../sup -//sub g/) are populated in the photodissociation. For both photolysis wavelengths most of the available energy, 65%--67%, appears in translation, while 15%--18% is in rotation, and 17%--18% is in vibration. These energy distributions are discussed in terms of simple models of the dissociation dynamics.

• Research Organization: University of California, Los Alamos National Laboratory, Chemistry Division, Los Alamos, New Mexico 87545
• OSTI ID: 5854661
• Journal Information: J. Chem. Phys.; (United States), Vol. 79:4
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
OZONE
PHOTOLYSIS
DISTRIBUTION
ENERGY
RAMAN SPECTRA
ROTATIONAL STATES
VIBRATIONAL STATES
VISIBLE RADIATION
CHEMICAL REACTIONS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EXCITED STATES
PHOTOCHEMICAL REACTIONS
RADIATIONS
SPECTRA
400500* - Photochemistry