Summary
The scattering distributions of μ-mesons in lead and copper have been investigated using a cloud chamber operated underground at a depth of 40 m w.e. At high momenta the observed scattering distributions are similar to those given byMolière for a « point » nucleus at large angles. It is shown that the results are consistent with a cross-section that varies asA 2 orZ 2 but not asZ orA.
Riassunto
Si sono studiate le distribuzioni dello scattering dei mesoni μ in piombo e in rame per mezzo di una camera a nebbia posta sotto terra alla profondità di 40 m a.e. Per momenti elevati le distribuzioni di scattering osservate sono simili a quelle data daMolière per un nucleo «puntiforme» sotto grandi angoli. Si dimostra che i risultati sono comparabili con una sezione d’urto variabile comeA 2 oZ 2 ma non comeZ oA.
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The apparatus used in this work was built in part with a grant from the Government Grant Committee of the Royal Society.
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Nash, W.F., Pointon, A.J. The scattering of μ-mesons in lead and copper. Nuovo Cim 9, 412–421 (1958). https://doi.org/10.1007/BF02725097
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DOI: https://doi.org/10.1007/BF02725097