Physics
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976phys...13...65j&link_type=abstract
Physica Scripta, vol. 13, Feb. 1976, p. 65-74.
Physics
5
Cosmic Rays, Heavy Ions, Ion Beams, Nuclear Emulsions, Particle Tracks, Angular Distribution, Data Reduction, Electron Energy, Electron Scattering, Energy Dissipation, Scattering Cross Sections
Scientific paper
Transverse absorptance profiles of 27 tracks of cosmic ray nuclei recorded in Ilford G5 nuclear emulsion have been measured by a nuclear track photometer. Included in the study were nuclei with atomic numbers 14, 16, 20, 24 and 26 with velocities relative to that of light within the range of beta values from 0.3 to 0.8. The experimental absorptance profiles have been compared with theoretical profiles calculated from the delta-ray theory of track formation developed by Katz and coworkers. Taking into account the rescattering of light into the cone of acceptance of the photometer, good agreement has been found between experimental and theoretical profiles within the entire charge and velocity interval. The semi-empirical formula for high aperture photometry is discussed in some detail, as well as the theory of delta-ray production and the transport of electrons and their energy dissipation in nuclear emulsion.
Jensen Marlene Mark
Larsson L.
Mathiesen O.
Rosander R.
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