High-resolution spectroscopy of the 16-. mu. m bending fundamental of CF/sub 4/

Journal Article · Tue Jan 01 04:00:00 EST 1980 · J. Mol. Spectrosc.; (United States)

DOI:https://doi.org/10.1016/0022-2852(80)90068-5· OSTI ID:6177165

McDowell, R S; Reisfeld, M J; Galbraith, H W; Krohn, B J; Flicker, H; Kennedy, R C; Aldridge, J P; Nereson, N G

The 16-..mu..m bending fundamentals (..nu../sub 4/) of /sup 12/CF/sub 4/, /sup 13/CF/sub 4/, and /sup 14/CF/sub 4/ have been observed at Doppler-limited resolution using a tunable PbSnSe semiconductor diode laser. The tetrahedral splittings of the rotational manifolds have been observed in all three branches, and in particular the dense and partially overlapping transitions in the Q branches have been resolved and assigned. A least-squares fit of the Hamiltonian, including off-diagonal terms, yielded five scalar and three tensor spectroscopic constants for each of the three isotopes. From these constants the upper-state rotational constant B/sub 4/ and the Coriolis constant zeta/sub 4/ have been calculated, together with some of the other molecular constants. An absorption feature at about 0.18 cm/sup -1/ to the red of the main Q branch of each isotopic species has been identified as the Q branch of (..nu../sub 2/ + ..nu../sub 4/) - ..nu../sub 2/, which is the transition that lases when CF/sub 4/ is pumped by a CO/sub 2/ laser at 9.4 ..mu..m (i.e., in ..nu../sub 2/ + ..nu../sub 4/).

• Research Organization: Los Alamos Scientific Lab., NM
• OSTI ID: 6177165
• Journal Information: J. Mol. Spectrosc.; (United States), Journal Name: J. Mol. Spectrosc.; (United States) Vol. 83; ISSN JMOSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON 12
CARBON 13
CARBON 14
CARBON ISOTOPES
CARBON TETRAFLUORIDE
DATA
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
ISOTOPE EFFECTS
ISOTOPES
LABELLED COMPOUNDS
LASER SPECTROSCOPY
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
RADIOISOTOPES
SPECTROSCOPY
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES