RATE OF EXTENSIVE SHOWERS OF HIGH ELECTRON DENSITY AT SEA LEVEL. Technical Final Report covering Period from December 1, 1956 through November 30, 1958

Technical Report · Sat Oct 31 04:00:00 EST 1959

OSTI ID:4239143

BS>An experimental study was made of the variations in the rates of local penetrating showers of cosmic radiation with solar time, of dense extensive air showers with solar time, and of penetrating extensive showers with sidereal time. The variation in rate of local penetrating showers with solar time was confirmed by measurements made in Dublin, and the results are in reasonable agreement with the theory of Bassi and Ferrari. The study of variation in rate of dense extensive air showers with solar time shows that the size of the showers producing this effect is between 10/sup 6/ and 10/sup 7/ particles at sea level. The hypothesis that the immediate cause is a change in the structure of the showers at sea level is suggested. The variation with sidereal time was confirmed, but greater statistical accuracy is needed for satisfactory analysis. The performance of arrays for detecting air shower direction was analyzed theoretically, and one array was tested experimentally. (J.S.R.)

• Research Organization: Dublin Inst. for Advanced Studies. School of Cosmic Physics
• NSA Number: NSA-13-018396
• OSTI ID: 4239143
• Report Number(s): AFOSR-TR-59-54; AD-216623
• Country of Publication: United States
• Language: English

Related Subjects

COSMIC RADIATION
ELECTRONS
ERRORS
LEVELS
MEASURED VALUES
PERFORMANCE
PHYSICS AND MATHEMATICS
QUANTITY RATIO
RECORDING SYSTEMS
SCATTERING
SHOWERS
STATISTICS
SUN
TESTING
VARIATIONS