The temporal and spatial variation in cosmic rays

Conference · Sun Dec 01 00:00:00 EST 1963

OSTI ID:4007532

Schaeffer, O. A.; Davis, R. Jr.; Stoenner, R. W.; Heymann, D.

The ratios /sup 39/Ar//sup 36/Cl in five dated fall meteorites were determined and compared with a production cross section ratio obtained from production measurements with iron targets. The results indicate that the average intensity of cosmic rays during the last million years was the same, within 10% of the average value during the last thousand years. Determination of the /sup 37/Ar//sup 39/Ar activity ratio in recently fallen meteorites and comparison with production cross sections measured with high-energy protons and alpha particles indicated that there is a 10 to 20% gradient in cosmic-ray intensity in space between the earth and a point some hundreds of kilometers further from the sun. Also, intense solar flares seem to produce measurable effects on meteorites. (D.C.W.)

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: AT(30-2)-GEN-16
• NSA Number: NSA-18-020815
• OSTI ID: 4007532
• Report Number(s): BNL--7948; CONF-320--2
• Conference Information: International Conference on Cosmic Rays, Jaipur (India) 2-14 Dec 1963
• Country of Publication: United States
• Language: English

Related Subjects

ALPHA PARTICLES
ARGON 37
ARGON 39
CHLORINE 36
COSMIC RADIATION
CROSS SECTIONS
EARTH
ENERGY RANGE
INTERACTIONS
LEVELS
METEORITES
ORBITS
PHYSICS
PRODUCTION
PROTONS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
SOLAR FLARES
SPACE
SUN
VARIATIONS