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The report details instrumentation designed to measure the parameters in the D-region of the ionosphere during a total solar eclipse. Four Nike-Hydac rockets were fired from Cassino, Brazil, in connection with the eclipse of 12 November 1966; a test flight round was flown on 5 November, and the remaining three rockets were fired during various phases of the eclipse on 12 November. The rocket payloads were identical and were designed to measure the following parameters: Positive ion composition, Positive ion density, Positive ion energy distribution, X-ray flux, Lyman-alpha radiation, Electron density, Electron temperature.
This bibliography lists all in-house reports, journal articles, and contractor reports issued from 1 July 1966 to 30 September 1967. Part I lists all in-house reports by the series in which they were issued; Part II lists all in-house reports, journal articles, and contractor reports by the Laboratory responsible for their preparation. In Part I, the reports are listed numerically by series; in Part II, in-house reports and journal articles are listed alphabetically by author, and contractor reports are listed numerically by the AFCRL report number.

Hearings

United States. Congress. House. Committee on Science and Astronautics

Published: 1967

Total Pages: 1098


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Positive ion composition measurements in the D and E regions were performed on three rocket flights during the 1966 solar eclipse program conducted at Cassino, Brazil. The E region results showed that, at totality, NO+ and O2+ decreased in density while the ratio NO+/O2 increased. Long-lived meteoric ions appeared to be unaffected during the short period of the eclipse. A submerged layer of meteoric ions became prominent at totality when the molecular ion densities were smallest and produced a sporadic E layer. The D region results indicated that the decay in the water cluster ions at totality was probably less than a factor of four in the vicinity of 80 km. This work represents part of a continuing Air Force program to study lower ionospheric processes which affect communications. (Author).