Sub-Iron Nuclei and Cosmic-Ray Propagation Model
Abstract
Elemental abundances of iron secondaries in cosmic rays have been measured by the French-Danish instrument on board the HEAO-3. The results are first interpreted by the energy-dependent leaky-box model, after which they are related to the results of other propagation models. This includes the diffusion model with a halo as well as models with simultaneous acceleration and propagation of cosmic rays. Particular attention is given to manganese, whose abundance relative to iron varies less steeply than those of other secondary nuclei. Koch et al. (1981) attributed this behavior to the partial beta (-) decay of the isotope Mn-54. Although the beta (-) half-life of Mn-54 has not yet been determined, it is believed to be in the 1-10 Myr range (Casse, 1973; Wilson, 1978).
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- 1981
- Bibcode:
- 1981ICRC....2...22C
- Keywords:
-
- Heavy Nuclei;
- Particle Motion;
- Secondary Cosmic Rays;
- Astronomical Models;
- Iron;
- Manganese;
- Particle Acceleration;
- Space Radiation;
- HEAVY NUCLEI;
- PARTICLE MOTION;
- SECONDARY COSMIC RAYS;
- ASTRONOMICAL MODELS;
- IRON;
- MANGANESE;
- PARTICLE ACCELERATION