• The azimuthal effect of cosmic rays at Lahore

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/022/02/0053-0059

    • Keywords

       

      Azimuth; Zenith Angle; Azimuth Angle; Geomagnetic Latitude; Azimuthal Variation

    • Abstract

       

      Four triple coincidence cosmic-ray telescopes directed at a common zenith angle of 60° were mounted on a turn table. Each telescope represented a vertical plane 90° from that of its neighbour. In each was inserted 10·2 cm. of lead. By 180° reversals each telescope was interchanged in its position with, the one directly opposite. Countings were made at settings of the table for every 10 degree of azimuth angle. Azimuthal variations in the North-West and North-East quadrants check qualitatively those theoretically predicted by Hutner. The data are still not sufficient to warrant quantitative comparison. It has been found that the maximum East-West asymmetry does not coincide with the magnetic East-West plane, but occurs at 280°–100° plane.

    • Author Affiliations

       

      P S Gill1

      1. Forman Christian College, Lahore
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