Accession Number : AD0268348

Title :   THE HE-3/ (HE-3+HE-4) RATIO IN PRIMARY COSMIC RADIATION

Corporate Author : ROCHE PRODUCTS LTD WELWYN (ENGLAND)

Personal Author(s) : RAO,M.V.K. APPA

Report Date : 17 NOV 1961

Pagination or Media Count : 1

Abstract : The rtio equals He3/ (He3 + He4) is determined using a nuclear emulsion stack exposed at the geomagnetic latitude 61 N on Augut 3, 1958 under 3.8 gms/sq. cm. of matter. The ratio R found at the top of the atmosphere is 0.31 + or - 0.08 for the same energy per nucleon (160-355 ev) and 0.33 + or - 0.08 for the same rigidity (1.05 - 1.48 Bv). These values are lower than a previous observation, but in agreement within the statistical errors, thus implying little or no time variation in the ratio R over a period of one year. (Author)

Descriptors :   *COSMIC RAYS, *HELIUM, ASTRONOMY, CHARGED PARTICLES, INTERSTELLAR MATTER, ISOTOPES, NUCLEI, NUCLEONS, PARTICLES, PHOSPHINOBORINES, SCATTERING, SPALLATION, STATISTICAL ANALYSIS, TABLES(DATA)

Distribution Statement : APPROVED FOR PUBLIC RELEASE