Accession Number : AD0749780

Title :   COSPAR Symposium on D- and E-Region Ion Chemistry--An Informal Symposium Record.

Descriptive Note : Final rept.,

Corporate Author : ILLINOIS UNIV URBANA AERONOMY LAB

Personal Author(s) : Sechrist,C. F. , Jr. ; Geller,M. A.

Report Date : 01 JUN 1972

Pagination or Media Count : 461

Abstract : Presented are the papers given at the symposium and the discussions on them. The topic was on aspects of the neutral and ion chemistry of the lower ionosphere. The importance of improved information on the height distributions of minor neutral constituents was emphasized. The role of model calculations was discussed. The importance of metastable states in the production of ionization was stressed; and the relative importance of particle precipitation, Lyman-alpha, and Lyman-beta sources of ionization was not resolved. The importance of precipitating particles as a source of ionization in the nighttime lower ionosphere at middle latitudes was also discussed. The observations of positive water-cluster ions were reported. In the session on electron density profiles, it was evident that the winter anomaly in the lower ionosphere remains unexplained.

Descriptors :   (*UPPER ATMOSPHERE, *SYMPOSIA), NITROGEN OXIDES, CHEMICAL REACTIONS, PHOTOCHEMICAL REACTIONS, DISSOCIATION, OZONE, OXYGEN, ATOMS, IONOSPHERE, GAS IONIZATION, ELECTRON DENSITY, NITROGEN

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE