Accession Number : ADD095441

Title :   Ion-Molecule Reactions,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : McDaniel, E W ; Cermak, V ; Dalgarno, A ; Ferguson, E E ; Friedman, L

Report Date : Oct 1969

Pagination or Media Count : 388

Abstract : The fact that ion-molecule reactions can occur in gases has been known since early in this century, but until recently such reactions excited comparatively little curiosity, and research in this field proceeded at a slow pace. The first theoretical work of relevance here appeared in Langevin's famous mobility papers of 1903 and 1905, in which he considered the clustering of molecules about gaseous ions and orbiting collisions between ions and molecules. Approximately the first half of this volume is devoted to a discussion of all the known experimental methods for making quantitative studies of ion-molecule reactions, and a critical analysis is made of the accuracy and reliability of these methods. Considerable space is then devoted to the theoretical foundations of the subject and to the various models which have been adopted in computations of reaction rates. A review is given of the measurements in the earth's atmosphere from which information on ion-molecule reactions has been deduced, and this is followed by a discussion of ion-molecule chemistry. Finally, experimental data on 230 ion-molecule reactions are displayed in tabular and graphical form. All the available data on these reactions were critically analyzed, and the best values chosen for inclusion. In many cases, in which more than one good measurement appears to have been made on a given reaction several data are presented to indicate the magnitude of the disagreements among the separate results.

Descriptors :   *ION ION INTERACTIONS, *MOLECULAR IONS, *MOLECULE MOLECULE INTERACTIONS, TABULATION PROCESSES, REACTION KINETICS, MOLECULAR ORBITALS, RELIABILITY, GASES, RATES, REACTION TIME, CLUSTERING, PLANETARY ATMOSPHERES, EARTH(PLANET), TABLES(DATA), METHODOLOGY

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE