A Study of Periodicities and Recurrences in Solar Activity and Cosmic Ray Modulation
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Galactic cosmic ray flux decline and periodicities in the interplanetary
[1] Ti and Al activities and heavy nuclei tracks produced by cosmic rays have been measured in 19 stone meteorites that fell during the period 1766 to 2001. The gamma activity measurements of cosmogenic isotopes were performed using a highly specific and selective large volume Ge-NaI (Tl) spectrometer. The Ti activity, corrected for the target element abundances and shielding effects, shows a d...
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