Heavy cosmic rays at sea level

Details Heavy cosmic rays at sea level Heavy cosmic rays at sea level

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..34..698y&link_type=abstract

Physical Review D (Particles and Fields), Volume 34, Issue 3, 1 August 1986, pp.698-706

Physics

2

Scientific paper

An experimental study of heavy cosmic rays at sea level has been carried out. Fluxes of protons, deuterons, tritons, and 3He nuclei in various speed intervals between 0.4c and 0.6c were measured and an upper limit obtained for the α-particle flux. These are reported and compared with earlier measurements. A model is given to account for the fluxes. Four anomalous events were recorded which are difficult to account for in terms of known nuclei. The data are consistent with a flux, of primary origin, of approximately 2×10-9 cm-2sec-1sr-1 at the zenith of singly charged long-lived particles with mass >~4.5mp but they do not require such a flux. Some theoretical speculations based on the possible existence of heavy particles are briefly given.

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