A discharge flow-photoionization mass spectrometric study of hydroxymethyl radicals (H{sub 2}COH and H{sub 2}COD): Photoionization spectrum and ionization energy
- Brookhaven National Lab., Upton, NY (United States)
- NASA/Goddard Space Flight Center, Greenbelt, MD (United States)
The photoionization spectrum of H{sub 2}COH was measured over the wavelength range 140-170 nm by using a discharge flow-photoionization mass spectrometer apparatus with synchrotron radiation. Hydroxymethyl radicals (H{sub 2}COH and H{sub 2}COD) were generated in a flow tube by the reaction of F atoms with CH{sub 3}OH(D). Ionization energies (IE) were determined directly from photoion thresholds. The IE values, 7.56 {plus_minus} 0.02 and 7.55 {plus_minus} 0.02 eV for H{sub 2}COH and H{sub 2}COD, respectively, are consistent with previous measurements. Also, the dissociative ionization process, presumed to be H{sub 3}CO* {yields} HCO{sup +} + H{sub 2}, was observed with a threshold at 8.61 {plus_minus} 0.06 eV. 44 refs., 5 figs.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 563379
- Journal Information:
- Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 1 Vol. 96; ISSN JPCHAX; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
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