Rotationally resolved threshold photoelectron spectrum of the methyl radical

Journal Article · Sun Feb 14 23:00:00 EST 1993 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.464077· OSTI ID:6881508

Blush, J A; Chen, P ^[1]; Wiedmann, R T; White, M G ^[2]

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1. Mallinckrodt Chemical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States)
2. Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

We report the rotationally resolved, one-photon threshold photoelectron spectrum of the methyl radical, CH[sub 3], produced by supersonic-jet, flash pyrolysis. Only rotational transitions with [Delta][ital K]=0, [plus minus]2 are observed and this result is shown to be consistent with photoionization selection rules in [ital D][sub 3[ital h]] symmetry. Assignment of the threshold photoelectron spectrum results in an adiabatic ionization potential of 79 349[plus minus]3 cm[sup [minus]1].

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6881508
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 98:4; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
664400 -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ADIABATIC APPROXIMATION
ALKYL RADICALS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY
ENERGY LEVELS
EXCITED STATES
FAR ULTRAVIOLET RADIATION
FLUID FLOW
IONIZATION POTENTIAL
JETS
METHYL RADICALS
MONOCHROMATIC RADIATION
PHOTOELECTRON SPECTROSCOPY
RADIATIONS
RADICALS
RESOLUTION
ROTATIONAL STATES
SPECTROSCOPY
SUPERSONIC FLOW
THRESHOLD ENERGY
ULTRAVIOLET RADIATION