HIGH-ALTITUDE INTENSITIES OF THE MEDIUM AND HEAVY COSMIC-RAY NUCLEI AND OF THE STAR-PRODUCING COMPONENT OVER A 25-HOUR INTERVAL

Journal Article · Sun Dec 01 04:00:00 EST 1957 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.108.1327· OSTI ID:4343376

Missert, R F

Results are reported on a study of the hourly averaged values of intensity of medium and heavy cosmic-ray nuclei and of the star-producing component over a day and night interval, at an avcrage atmospheric depth of 15 g/ cm/sup 2/. The equipment was carried aloft by a Skyhook balloon on August 6, 1954 from Minneapolis, Minnesota (geomagnetic latitude 55 deg N). A large, thin- walled spherical pulseionization chamber served as the dctecting instruroent. Approximately 125 000 of these cosmic-ray events were recorded over the 25-hour flight interval; thus, statistical counting rate fluctuations wcre reduced substantially below those previously attained in this field. Analysis shows that approximately one-half of the counting rate at 15 g/cm/sup 2/ can be ascribed to the medium and heavy nuclei, the remainder being reasonably accounted for as arising from the star-producing component. No variation is observed in the hourly averaged counting rate oi pulses of size greater than 6 Mev throughout the flight, to within the combined statistical and experimental uncertainties of plus or minus 4 to 6% during the daytime, and plus or minus 8 to 10% during the night. (auth)

• Research Organization: State Univ. of Iowa, Iowa City
• NSA Number: NSA-12-004267
• OSTI ID: 4343376
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 108; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BALLOONS
COSMIC RADIATION
COSMIC RAY STARS
EARTH
ENERGY
FISSION
GEOMAGNETIC COORDINATES
INTERACTIONS
IONIZATION CHAMBERS
LOSSES
MAGNETIC FIELDS
MASS
MEASURED VALUES
NUCLEI
PHYSICS
PULSES
STATISTICS
STRATOSPHERE
VARIATIONS