Abstract
Variation of cosmic ray intensity with altitude was measured at Mt. Fuji located at about 26°N on geomagnetic latitude on August 1994. The measurement was carried out with a spectrometer equipped with a 76.4 mm (3″) diameter spherical NaI (Tl) scintillator. Analysis was made for absorbed energy spectra above 3 Me V by the peeling-off method, and the cosmic ray intensity was calculated as the exposure rate from the ionizing component of the cosmic rays. The cosmic ray intensity increased with increasing altitude. The maximum (30.7×10-10 C/kg/h) and minimum (8.5×10-10 C/kg/h) values were observed at summit area of Mt. Fuji (3740 m) and near the sea level (about 20 m), respectively. Above 2500 m, the rate of change of cosmic ray intensity with altitude was estimated to be about 0.99×10-12 (C/kg) /h/m. The rate from near the sea level to about 2 500 m was also estimated to be about 0.39×10-12 (C/kg) /h/m.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
