Accession Number : AD0677283

Title :   THE VERY HEAVY NUCLEI IN THE PRIMARY COSMIC RADIATION. PART II. INTERPRETATION OF THE ENERGY SPECTRA.

Descriptive Note : Technical rept.,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS COSMIC RAY GROUP

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

Report Date : 1968

Pagination or Media Count : 38

Abstract : An attempt has been made to understand the form of the observed energy spectrum of the highly charged, 20 less than Z less than 30, nuclei in the primary cosmic radiation. It is shown that the behavior of this spectrum relative to that of the helium nuclei also present in the cosmic radiation can be explained by assuming that the highly charged nuclei have two components. The first of these components is dominant at high energies and has a spectrum at the source that can be represented as a simple power law with a slope somewhat flatter than that of the source spectrum of the helium nuclei. The nuclei in this component may be regarded as having traversed several g/sq cm of matter between the times of acceleration and of detection. The second component is only of importance at relatively low energies, of a few hundred MeV per nucleon, has a spectrum that falls steeply with increasing energy and cannot simply be represented as a power law. The possible consequences of such a model are briefly considered. (Author)

Descriptors :   (*COSMIC RAYS, NUCLEI), HELIUM, INTERACTIONS, ENERGY, ACCELERATION, DETECTION, INTERSTELLAR MATTER, CHARGED PARTICLES, PHASE STUDIES, MATHEMATICAL MODELS, KINETIC ENERGY, NUCLEONS

Subject Categories : Atmospheric Physics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE