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Decrease of hard primary cosmic rays in matter

โœ Scribed by J. Clay; J.T. Wiersma; E.M. Bruins

Publisher
Elsevier Science
Year
1937
Weight
299 KB
Volume
4
Category
Article
ISSN
0031-8914

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Since the lower atmospheric layers give a much' larger decrease of primary rays than found for layers of lead, iron and water of the same mass per em' the possibility is considered that nitrogen might act abnormally on the rays. In consideration of this possibility the decrease in ureurn, CO(XH,l,

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The number of showers of Cosmic Rays was measured in lead cylinders under layers of iron and lead up to 700 gr/cm t โ€ข The number of showers under iron and lead sheets was also measured. Under lead and iron were found two maxima which are explained by the two kinds of primaries both of which produce