Accession Number : AD0722470

Title :   Consecutive Ion-Molecule Reactions in Acetylene Investigated by Charge Exchange Mass Spectrometry,

Corporate Author : ROYAL INST OF TECH STOCKHOLM (SWEDEN) DEPT OF PHYSICS

Personal Author(s) : Szabo,I. ; Derrick,P. J.

Report Date : 30 NOV 1970

Pagination or Media Count : 30

Abstract : The consecutive ion-molecule reactions in acetylene within the pressure limits of 0.00001 and 0.01 torr have been investigated as a function of the energy transferred to the acetylene molecule during the initial ionization by charge exchange with incident positive ions of low kinetic energy. The reactions of the molecular ion in the ground electronic state pi(u)(-1) are distinguished from those of the molecular ion in an excited electronic state sigma(g)(-1). The various chain sequences of reaction, including those involving ions with uneven numbers of carbon atoms, are elucidated, and numerous reactions proposed by earlier workers are shown to be unimportant in the pressure range investigated. Rate constants are calculated for the various ion-molecule reactions. (Author)

Descriptors :   (*ALKYNES, *IONIZATION POTENTIALS), ION BOMBARDMENT, EXCITATION, MOLECULAR ORBITALS, REACTION KINETICS, SWEDEN

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE