Accession Number : AD0617869

Title :   STUDIES ON THE EXCITATION OF N2 AND N2(+) BANDS IN AURORA.

Descriptive Note : Scientific rept.,

Corporate Author : NORWEGIAN INST OF COSMIC PHYSICS OSLO

Personal Author(s) : Eftestol,A. ; Omholt,A.

Report Date : 22 MAY 1964

Pagination or Media Count : 17

Abstract : Some excitation mechanisms for N2 and N2(+) in aurora are discussed with emphasis on the time delays caused by secondary mechanisms. The N2(+) First negative (0-1) band at 4278A and one of the following bands: (A) the N2(+) Meinel (4-1) band at 7037A, (B) the First positive (5-2) band at 6705A and (C) the Second positive (0-3) band at 4059A emitted from active aurora were recorded simultaneously by a filter photometer. The observations are consistent with the view that the three latter bands may in part be excited by secondary mechanisms. The time delays caused by secondary mechanisms are compared with the corresponding time delay caused by an analogue RC-circuit indicating time constants of the order of one second. (Author)

Descriptors :   (*AURORAE, BAND SPECTRA), (*NITROGEN, EXCITATION), ATOMIC ENERGY LEVELS, EMISSIVITY, ANALOG SYSTEMS, CIRCUITS, NORWAY

Distribution Statement : APPROVED FOR PUBLIC RELEASE