Threshold photoelectron photoion coincidence study of the fragmentation of valence states of CH2F CH3+

Details Threshold photoelectron photoion coincidence study of the fragmentation of valence states of CH2F CH3+ Threshold photoelectron photoion coincidence study of the fragmentation of valence states of CH2F CH3+

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007njph....9..104z&link_type=abstract

New Journal of Physics, Volume 9, Issue 4, pp. 104 (2007).

Physics

Scientific paper

We have carried out a comprehensive study of the decay dynamics of the valence electronic states of CH2F CH3+, by using threshold photoelectron photoion coincidence (TPEPICO) spectroscopy and a tunable vacuum ultraviolet synchrotron radiation source. Threshold photoelectron spectroscopy (TPES) has been recorded for the first time in the photon energy range of ~12 24 eV. Ion yield curves and breakdown diagrams have been determined in the energy range of ~ 11.5 18 eV. The dissociation process and fragmental mechanism of the valence states of the parent ion are discussed. The mean translational kinetic energy releases for fragmentation of CH2F CH3+, via a single bond cleavage have been measured and compared with the predictions of statistical and impulsive mechanisms. For dissociation CH2F CH3+→CHF CH3+ + H+e-, a non-statistical decay is assumed, and there seems to be a transition to statistical behaviour with increasing photon energy. For cleavage of the C C bond to form CH2F+, there seems again to be a transition to statistical decay. The ionization threshold measured from the TPES and the appearance energies (AEs) identified from the ion yield curves are presented. An upper limit for the ionization threshold of CH2F CH3 (11.66 ± 0.03 eV) and the enthalpy of formation of CH2F CH3+ at 298 K (679 ± 3 kJ mol-1) are determined.

Affiliated with

Also associated with

No associations

Rating

Threshold photoelectron photoion coincidence study of the fragmentation of valence states of CH2F CH3+ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Threshold photoelectron photoion coincidence study of the fragmentation of valence states of CH2F CH3+, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Threshold photoelectron photoion coincidence study of the fragmentation of valence states of CH2F CH3+ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1359627