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Investigation of Direct Pair Formation by Electrons (in German)

Journal Article · · European Physical Journal. A
DOI:https://doi.org/10.1007/BF01327021· OSTI ID:4185976
The direct production of electron-positron pairs by 31.5Mev electrons was investigated using a counting device. The external electron beam of a betatron, collimated and by deflection cleaned of photons, passed through a thin copper foil and was collected in a Faraday cup. The fast positrons emerging from the foil were analyzed in a magnetic field and detected by a plastic scintillator. By varying the thickness of the foil the differential cross section for (real) trident production was obtained. It was found to amount to about one third of the cross section predicted by Bhabha's theory (with k = k' = 1).
Research Organization:
Technische Hochschule, Karlsruhe, Ger.; Max-Planck-Institut fur Chemie, Mainz
Sponsoring Organization:
USDOE
NSA Number:
NSA-14-015262
OSTI ID:
4185976
Journal Information:
European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 4 Vol. 158; ISSN 1434-6001
Publisher:
Springer
Country of Publication:
Country unknown/Code not available
Language:
German

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