Abstract
Abstract Theoretical and experimental studies have led to the development and fabrication of a rocketborne beta-ray densitometer for the direct determination of atmospheric density in the 30–65 km atmospheric interval. Comparison of atmospheric density profiles determined by the Betasonde densitometer with temperature-derived atmospheric density profiles showed excellent agreement to 35 km. Above 35 km, however, the two profiles gradually, diverged until at 50 km the Betasonde-determined density was 35–40%. greater than the temperature-derived density. This paper discusses the results of the cosmic ray count determination in the 0–50 km region with a cosmic ray detector, identical in configuration and sensitivity to the Betasonde, which served as a part of the instrument package on a high-altitude balloon flight from White Sands Missile Range, to 50 km on 22 September 1969. These results indicate that the differences in the comparison atmospheric density values can be attributed to cosmic rays which are d...
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