Measurements of He-3 and He-4 nuclei using a balloon borne telescope

Details Measurements of He-3 and He-4 nuclei using a balloon borne telescope Measurements of He-3 and He-4 nuclei using a balloon borne telescope

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icrc....1..312w&link_type=abstract

In: International Cosmic Ray Conference, 14th, Munich, West Germany, August 15-29, 1975, Conference Papers. Volume 1. (A76-26851

Physics

8

Balloon-Borne Instruments, Cosmic Rays, Helium Isotopes, Nucleons, Particle Flux Density, Abundance, Earth Atmosphere, Energy Spectra, Interstellar Radiation, Particle Telescopes

Scientific paper

Relative abundances of cosmic-ray He-3 and He-4 nuclei in the 125-210 MeV/nucleon energy range are reported from balloon data. The He-3 spectrum above roughly 40 MeV/nucleon can be derived from the He-4 spectrum. Predicted and observed He-3 spectra are compared, with solar modulation taken into account, to interstellar He-4 spectra. It is concluded that conventional interstellar He-4 spectra cannot simultaneously reproduce high-energy and low-energy He-4 fluxes seen at earth in 1972, and medium-energy and low-energy He-4 fluxes seen at earth in 1972.

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