Other
Scientific paper
Apr 1965
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965phrv..138..416w&link_type=abstract
Physical Review, vol. 138, Issue 2B, pp. 416-419
Other
5
Scientific paper
A balloon-borne scintillation-scintillation Čerenkov telescope has been used to measure the spectrum and geomagnetic cutoff-transmission effects on the low-energy proton and helium components in the primary cosmic radiation. Differences are found in the cutoff effects (assumed to be rigidity-dependent) of these two components in flights at closely adjacent latitudes. It is shown that these differences can be related to the presence of He3 in the primary radiation. The ratio (He3/He3+He4) is deduced to be 0.30+/-0.07, essentially independent of energy in the range 120-300 MeV/nucleon. This result is compared with other measurements and some implications regarding the production of the He3 nuclei are discussed.
Ormes Johnathan F.
Webber William R.
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