Resonance ionization spectroscopy of cyanogen

Journal Article · Sun Mar 01 04:00:00 EST 1998 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.475775· OSTI ID:613982

Velazquez, J; Cool, T A ^[1]

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

Strong (1+2) resonance-enhanced multiphoton ionization (REMPI) spectra have been recorded for cyanogen resonantly excited by single photon absorption on vibronically allowed transitions to the {tilde A}{sup 1}{Sigma}{sub u}{sup {minus}} and {tilde B}{sup 1}{Delta}{sub u} electronic states at wavelengths from 205 to 220 nm. A previously unreported Fermi resonance between the {nu}{sub 2} and 4{nu}{sub 5} vibrational modes of the {tilde A} state is observed for the rotationally resolved spectra of transitions that involve excitations of the {nu}{sub 2} mode. New measurements of vibrational and rotational spectroscopic constants are reported for the {tilde A} and {tilde B} electronic states. A detection limit of 120 ppb measured for (1+2) REMPI of cyanogen is an order of magnitude larger than typical (2+1) REMPI detection limits for other aliphatic compounds. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 613982
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 9 Vol. 108; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
COMBUSTION
CYANOGEN
DETECTION
FERMI RESONANCE
HAZARDOUS MATERIALS
INCINERATORS
MONITORING
MULTI-PHOTON PROCESSES
PHOTOIONIZATION
PRECURSOR
VIBRATIONAL STATES