Measurement of the Dissociation Rate of Molecular Ions PDF Download

Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Measurement of the Dissociation Rate of Molecular Ions PDF full book. Access full book title Measurement of the Dissociation Rate of Molecular Ions by Ch Ottinger. Download full books in PDF and EPUB format.

Measurement of the Dissociation Rate of Molecular Ions

Measurement of the Dissociation Rate of Molecular Ions PDF Author: Ch Ottinger
Publisher:
ISBN:
Category : Dissociation
Languages : en
Pages : 52

Get Book Here

Book Description
The time interval between the ionization of a molecule by electron impact and its dissociation was determined from the kinetic energy of the fragment ions. This technique allows a direct differential sampling of the dissociation rate at various times, in contrast to previous, integral methods. The use of disc-shaped molecular beam of 28 micrometers half-width and a draw-out field of 10,000 V/cm in the ionization region resulted in a minimum measured time interval of 7.4 nonoseconds. The longest times measured were between 5 and 6 microseconds. The time dependence of the decomposition rate was measured for two decompositions in butane, five in heptane, three in benzene, one in CD4 and one in CO2(++), with rather similar results. It was established that the decay is not exponential. All decay curves, plotted semi-logarithmically, were found to have an increasing slope towards shorter times, indicating contributions from a variety of rate constants in agreement with the predictions of the statistical theory of ion decompositions.