Inelastic scattering of NCO([tilde X][sup 2]II) + He: Prototypical rotational state distributions for Hund's case (a) radicals

Journal Article · Thu Nov 28 04:00:00 EST 1991 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100177a007· OSTI ID:6818107

MacDonald, R G; Liu, Kopin ^[1]

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1. Argonne National Lab., IL (United States)

State-resolved cross sections for the inelastic scattering of the linear triatomic radical NCO([tilde X][sup 2]II[sub 3/2]) by He have been measured in a pulsed, crossed-beam apparatus at a collision energy of 3.74 kcal mol[sup [minus]1]. Dramatically different rotational state distributions were found depending on whether or not the spin-orbit state of NCO was preserved in the collision. It is proposed that the observed different distributions are generic to the inelastic scattering of a Hund's case (a) [sup 2]II radical, arising naturally as a dynamical consequence of the Renner-Teller effect.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6818107
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 95:24; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
CARBON COMPOUNDS
COLLIDING BEAMS
COUPLING
CROSS SECTIONS
DATA
ELEMENTS
ENERGY LEVELS
ENERGY SPECTRA
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM
INELASTIC SCATTERING
INFORMATION
INTERMEDIATE COUPLING
L-S COUPLING
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
RADICALS
RARE GASES
ROTATIONAL STATES
SCATTERING
SPECTRA