Cosmic Ray H And He Spectra From 2 To 800 Tev/Nucleon From The Jacee Experiments
INTERSECTIONS BETWEEN PARTICLE AND NUCLEAR PHYSICS - 6TH CONFERENCE(1997)
Abstract
Results for the cosmic ray hydrogen and helium spectra up to 800 TeV, near the "knee" region, are presented. There is no sign of a break in either the hydrogen or helium spectra. The differential power law slopes are 2.80 +/- 0.04 for hydrogen and 2.68 +/- 0.06 for helium. With these new H and Re measurements, together with earlier reported results for the heavier elements, the sum of the spectra give an all-particle spectrum that is in good agreement with the all-particle spectrum measured using extensive air showers.
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Key words
spectrum,cosmic ray,power law,elementary particles
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