Accession Number : AD0701931

Title :   ROCKET MEASUREMENTS OF NITRIC OXIDE IN THE LOWER D-REGION OF THE IONOSPHERE,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK IONOSPHERE RESEARCH LAB

Personal Author(s) : Pontano,B. A.

Report Date : 01 FEB 1970

Pagination or Media Count : 95

Abstract : A rocket borne probe which measures nitric oxide concentration in the D-region has been designed, built, and successfully flown on September 22, 1968, December 6, 1968, and December 12, 1968. The probe measures changes in ionization caused by photo-ionizing neutral nitric oxide with a flashing Lyman-alpha source. The experiment yielded nitric oxide densities greater than 10 to the 8th power/cc in the 40-63 rm altitude range. Chemical equilibrium conditions do not explain the observed NO data. Below the mesopause, the atomic nitrogen concentration is so low that a photoequilibrium value of NO cannot be reached. Therefore, nitric oxide must be transported from the lower thermosphere, a region where atomic nitrogen is abundant, into the mesosphere and stratosphere. (Author)

Descriptors :   (*IONOSPHERE, ATMOSPHERIC SOUNDING), (*NITROGEN OXIDES, MEASUREMENT), IONIZATION, CHARGED PARTICLES, INTERACTIONS, SOUNDING ROCKETS, SPECTROMETERS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE