Elemental abundances of cosmic rays with Z 33 as measured on HEAO-3

Details Elemental abundances of cosmic rays with Z 33 as measured on HEAO-3 Elemental abundances of cosmic rays with Z 33 as measured on HEAO-3

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....2..123n&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 2 p 123-126 (SEE N85-34006 22-93)

Astronomy and Astrophysics

Astronomy

Abundance, Cerenkov Radiation, Cosmic Rays, Galactic Radiation, Heavy Nuclei, Cerenkov Counters, Heao 3, Ionization Chambers, Maximum Likelihood Estimates, Resolution

Scientific paper

The Heavy Nuclei Experiment on (HEAO-3) high energy astronomy observatory 3 uses a combination of ion chambers and a Cerenkov counter. During analysis, each particle is assigned two parameters, Zc and Zi, proportional to the square roots of the Cerenkov and mean ionization signals respectively. Because the ionization signal is double valued, a unique assignment of particle charge, Z, is not possible in general. Previous work was limited to particles of either high rigidity or low energy, for which a unique charge assignment was possible, although those subsets contain less than 50% of the total number of particles observed. The maximum likelihood technique was used to determine abundances for the complete data set from approx. 1.5 to approx. 80 GeV/amu.

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