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Chemistry of recoil tritium atoms. Part 1.—Reaction with n-butane, n-pentane and neo-pentane

1968; Royal Society of Chemistry; Volume: 64; Linguagem: Inglês

10.1039/tf9686401547

2050-5647

D. S. Urch, Michael J. Welch,

Mass Spectrometry Techniques and Applications

The reactions of recoil tritium atoms with n-butane, n-pentane and neo-pentane in the presence of about 2 % oxygen (scavenger) and varying amounts of helium (inert moderator) are described. Using the Estrup-Wolfgang kinetic theory average molecular moderating parameters α are determined. Reactivity integrals Ii and Ki, integrals, are also found. It is proposed that reactive and non-reactive collisions are essentially of the same (inelastic) type and that the ability of a paraffin molecule to absorb energy is related to the number of its fundamental vibrations. This model explains the observations that both l(=Σli) and α appear to increase with molecular size.