Resonance ionization spectroscopy of HCO and DCO. I. The 3 p sup 2. Pi. Rydberg state

Journal Article · Mon Jun 15 04:00:00 EDT 1992 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.462273· OSTI ID:7183147

Song, X; Cool, T A ^[1]

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1. School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853 (United States)

Resonance two-photon ionization (R2PI) spectroscopy has been used for medium resolution studies of HCO and DCO at wavelengths from 208 to 222 nm. Vibronic analysis of subband positions originating from both {ital A}{prime} and {ital A}{double prime} symmetry components of the 3{ital p} {sup 2}{Pi} Rydberg states of HCO and DCO yields values for the Renner--Teller parameter {Epsilon}, dipolar vibronic parameter {ital g}{sub {ital k}}, quartic anharmonicity constant {ital g}{sub 22}, harmonic bending vibrational frequency {omega}{sub 2}, anharmonicity constant {ital x}{sub 22}, and spin--orbit splitting constant {ital A}. Values of the harmonic frequencies {omega}{sub 2} and anharmonicity constants {ital x}{sub 22} for the bending vibrations of the HCO and DCO {ital {tilde X}} {sup 2}{ital A}{prime} ground states are also determined. Previously unidentified two-photon subbands, thought to be excitations of the 3{ital s} {sup 2}{Sigma}{sup +} Rydberg state, are assigned to the symmetric {ital A}{prime} component of the 3{ital p} {sup 2}{Pi} state.

• DOE Contract Number: FG02-86ER13508
• OSTI ID: 7183147
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 96:12; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
CHEMICAL REACTIONS
COMBUSTION
COUPLING
DEUTERATION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EXCITED STATES
GROUND STATES
INTERMEDIATE COUPLING
ION SPECTROSCOPY
IONIZATION
L-S COUPLING
MULTI-PHOTON PROCESSES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDATION
PHOTOIONIZATION
RADIATIONS
RADICALS
RESOLUTION
RESONANCE ABSORPTION
RYDBERG STATES
SORPTION
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
ULTRAVIOLET RADIATION