Accession Number : AD0434176


Title :   THE MODULATION OF HEAVY NUCLEI IN THE PRIMARY COSMIC RADIATION,


Corporate Author : MINNESOTA UNIV MINNEAPOLIS SCHOOL OF PHYSICS AND ASTRONOMY


Personal Author(s) : Freier,P S ; Waddington,C J


Report Date : Feb 1964


Pagination or Media Count : 32


Abstract : The ntensities of the primary cosmic ray heavy nuclei, Z equal to or greater than 3, have been studied during several Forbush decreases. Fifteen values of the intensity were measured using nuclear emulsion detectors flown during a balloon cosmic ray monitoring program. These values are those observed before, during or after four of the largest Forbush decreases that occurred in the last solar cycle. Examination of this data, together with that previously available in the literature suggests that the heavy nuclei are modulated in a similar manner to the alphaparticle and protons of the primary radiation, showing that the modulation process is not a strongly charge dependent one. (Author)


Descriptors :   *COSMIC RAYS , INTENSITY , METEOROLOGICAL BALLOONS , IONIZATION CHAMBERS , GEIGER COUNTERS , MODULATION , ALPHA PARTICLES


Distribution Statement : APPROVED FOR PUBLIC RELEASE