TY - JOUR
T1 - The effects of isotopomers in the state-selected photofragmentation of BCl3+, PCl3+ and PBr3+
AU - Jarvis, Gary
AU - Seccombe, Dominic
AU - Tuckett, Richard
PY - 1999/12/1
Y1 - 1999/12/1
N2 - Analysis of the shapes of time-of-flight (TOF) peaks of singly-charged polyatomic cations produced in photoelectron-photoion coincidence spectra allows a determination of the total mean kinetic energy released into translational motion of the fragment species, (KE)(t). In turn, this value can indicate the mechanism of unimolecular photofragmentation. We show that in cases where the daughter ion has more than one isotopomer, allowance must be made for them in analysing the TOF distributions. Otherwise, values for (KE)t are obtained which are too large. Examples are given from recent work by us on state-selected (BCl3+)* --> BCl2+ + Cl and (PX3+)* --> PX2+ + X (X = Cl,Br). (C) 1999 Elsevier Science B.V. All rights reserved.
AB - Analysis of the shapes of time-of-flight (TOF) peaks of singly-charged polyatomic cations produced in photoelectron-photoion coincidence spectra allows a determination of the total mean kinetic energy released into translational motion of the fragment species, (KE)(t). In turn, this value can indicate the mechanism of unimolecular photofragmentation. We show that in cases where the daughter ion has more than one isotopomer, allowance must be made for them in analysing the TOF distributions. Otherwise, values for (KE)t are obtained which are too large. Examples are given from recent work by us on state-selected (BCl3+)* --> BCl2+ + Cl and (PX3+)* --> PX2+ + X (X = Cl,Br). (C) 1999 Elsevier Science B.V. All rights reserved.
U2 - 10.1016/S0009-2614(99)01208-7
DO - 10.1016/S0009-2614(99)01208-7
M3 - Article
VL - 315
SP - 287
EP - 292
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -