EXTENSIVE AIR SHOWERS AT 4200 m

Journal Article · Mon Jan 01 04:00:00 EST 1962 · J. Phys. Soc. Japan

OSTI ID:4763838

Hersil, J; Escobar, I; Clark, G; Olbert, S; Moore, C; Scott, D

Extensive air showers were studied at an altitude of 4200 m with the same apparatus previously used at sea level. The properties of the showers were found to be distinctly different at the higher altitude. It is concluded that the average atmospheric depth of maximum development for showers with a maximum of 2 x 10/sup 8/ particles is about 800 g cm/sup -2/. The average lateral distribution at distances greater than 30 m from the core is markedly steeper than at sea level and varies significantly with zenith angle. A map of the celestial arrival directions of 195 showers with N > 10/sup 8/ and 6 with N > 10/ sup 9/, corresponding to primary energies in excess of 10/sup 11/ and 10/sup 18/ ev respectively, shows no anistropy. Because of the geographic location (near La Paz, Bolivia) most of the events came from the southern hemisphere. (A.G.W.)

• Research Organization: Laboratorio de Fisica Cosmica, La Paz, Bolivia
• NSA Number: NSA-17-013060
• OSTI ID: 4763838
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 17: Suppl. A-III
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AIR
ANISOTROPY
ATMOSPHERE
COSMIC RADIATION
DIAGRAMS
DISTRIBUTION
ENERGY
PHYSICS
SCATTERING
SHOWERS