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Malmfors, K. G. (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
The main purpose of the registrations reported here has been to study the diurnal variations of C. R. and especially to investigate how the amplitude and the phase of the variation depend on the direction of incidence. Since statistical fluctuations will dominate over the significant ones unless a sufficiently large number of coincidences is counted, it has been necessary to use an apparatus with a high counting speed. C. R. has been recorded continuously in Stockholm (magn. lat. 58°) since 1. 10. 1947 by means of large counters in coincidence circuit. Recordings have been made in three different directions simultaneously, and the total number of particles counted amounts to 109. The material has been analyzed with respect to diurnal variation. This analysis definitely proves that the variation is not the same in different directions. A term called C. R. activity has been introduced for the purpose of classifying the registrations according to the magnitude of the variation for each day. An analysis shows that large activity is very often observed during consecutive days.DOI: 10.1111/j.2153-3490.1949.tb01259.x
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    • A L F V ~ Nand MALMFORS19,43: Directional measurements of cosmic radiation, Ark. f. mat., astr. 0.fys. 29 A, N:o 24.
    • ALFV+N,1946: Changec in cosmic ray intensity associated with magnetic storms, Nature, 158,618.
    • A L F V ~ NR,ICHTMYERT,ELLER,1949: On the origin of cosmic raysr, Phys. Rev. 75, 892.
    • BLACKETT1,938: On the instability of the barytron and the temperature effect of cosmic rays, Phys. Rev. 549 973.
    • DUPERIER1,945: The geophysical aspect of cosmic raysr Phys. 57. 464.
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    • KOLHORSTE1R9,41: Der Tagesgang der Hohenstrahlung, Phys. Zs. 42. 5 s .
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