PMID: 11328014May 1, 2001Paper

Observation of accurate ion dissociation thresholds in pulsed field ionization-photoelectron studies

Physical Review Letters
K M WeitzelC Y Ng

Abstract

We report the first observation, together with a mechanism for such an observation, of a steplike feature in the pulsed field ionization photoelectron measurement of CH4(C2H2), marking the 0 K dissociation threshold for the formation of CH3(+) + H(C2H(+) + H) from CH4(C2H2). The nonexistence of a step in the spectrum for C 2H4 at its dissociation threshold for C2H2(+) formation provides strong support for the proposed mechanism. This experiment shows that, for a range of molecules, where the ion dissociation lifetimes near the dissociation thresholds are <10(-7) s, pulsed field ionization photoelectron measurements will yield not only highly accurate ionization energies, but also 0 K dissociation thresholds.

References


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Citations

Apr 25, 2002·Annual Review of Physical Chemistry·Cheuk-Yiu Ng
May 19, 2007·The Journal of Chemical Physics·Juan LiC Y Ng
Feb 22, 2011·Mass Spectrometry Reviews·Karl-Michael Weitzel
Nov 7, 2017·Physical Chemistry Chemical Physics : PCCP·Andras BodiRichard P Tuckett
Jan 16, 2007·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Karl-Michael Weitzel
Apr 7, 2005·Physical Chemistry Chemical Physics : PCCP·Jie YangC Y Ng
Jun 19, 2019·Physical Chemistry Chemical Physics : PCCP·Zied GouidLionel Poisson
Sep 8, 2012·The Journal of Physical Chemistry. a·Jonelle HarveyAndras Bodi

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