Time-resolved kinetic energy releases in propane

In this work we present a combined experimental and theoretical study of the time-resolved average kinetic energy release (KER)(╬╡) over bar of the H-. loss reaction in propane leading to the sec-propyl cation, C3H8.+ --\u3e sec-C3H7+ +H-.. The addition of a third field-free region to our double-focusing sector mass spectrometer, combined with previous results obtained by us and others, provides (╬╡) over bar values for ion lifetimes ranging from tau(mp) on the excess non-fixed energy E-# above the critical energy shows that the fraction (╬╡) over bar /E-# approaches a value of 1.0 for the metastable reaction