THE HIGH-ENERGY COSMIC-RAY FLARE OF MAY 4, 1960. PART I. HIGH-ALTITUDE IONIZATION AND COUNTER MEASUREMENTS

Journal Article · Sat Apr 01 04:00:00 EST 1961 · J. Geophys. Research

DOI:https://doi.org/10.1029/JZ066i004p01023· OSTI ID:4030890

Winckler, J R; Masley, A J; May, T C

Total ionization and counting rate measurements were made at 6 g/cm/sup 2/ depth at Minneapolis in the period from 7 to 16 hours following the cosmic-ray flare of May 4, 1960. The excess energy influx 7 hours after the flare was 340 Mev/cm/sup 2/ - sec in an atmospheric column. The omnidirectional ionization and counting rates were about 25% above normal and the ionization ratio per particle was 1.2 times normal galactic cosmic rays at the same altitude. This is consistent with the high-energy nature of the event and contrasts greatly with the steep low-energy spectrum frequently observed during geomagnetic disturbances at Minneapolis. There is evidence for a displaced impact zone effect in the period 7 to 15 hours after the flare. (auth)

• Research Organization: Univ. of Minnesota, Minneapolis
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-016290
• OSTI ID: 4030890
• Journal Information: J. Geophys. Research, Journal Name: J. Geophys. Research Vol. Vol: 66
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

COSMIC RADIATION
COUNTERS
DISTURBANCES
EARTH
ENERGY
ENERGY RANGE
IONIZATION
LEVELS
MAGNETIC FIELDS
MAGNETIC STORMS
MEASURED VALUES
PHYSICS
PRODUCTION
SOLAR FLARES
STRATOSPHERE
SUN
TURBULENCE
VARIATIONS