Summary
G-5 emulsions were exposed in February, 1957 during the Operation EQUEX on two flights of about 100 000 foot altitudes for about 71/2 h each. Tracks of nuclei cfZ ⩾ 10 were studied. The δ-ray method of counting was used. Results are given for the angular distribution, charge spectrum, flux at the top of the atmosphere, and attenuation mean free path.
Riassunto
Nel Febbraio 1957, durante l’operazione EQUEX, furono esposte in due lanci, all’altezza di 100 000 piedi circa e per la durata approssimativa di 7 1/2 h ciascuno, delle emulsioni G-5. Furono esaminate le tracce dei nuclei diZ ⩾ 10. Fu adottato il metodo del conteggio dei raggi δ. Si riportano i risultati relativi alla distribuzione angolare, allo spettro della carica, al flusso sulla sommità dell’atmosfera ed al cammino libero medio di attenuazione.
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Also appreciated is the assistance given by Prof.Marcel Schein and his Cosmic Ray Group at the University of Chicago.
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Young, O.B., Zurheide, F.W. Primary heavy cosmic rays near the geomagnetic equator. Nuovo Cim 14, 90–98 (1959). https://doi.org/10.1007/BF02725009
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DOI: https://doi.org/10.1007/BF02725009