Opening angles of electron–positron pairs

Autor:	C. Y. Kim, L. E. Richards
Rok vydání:	1977
Předmět:	Physics Positron General Physics and Astronomy Nuclear emulsion Electron Atomic physics Nuclear Experiment Linear particle accelerator Bremsstrahlung photon Intensity (physics)
Zdroj:	Canadian Journal of Physics. 55:615-619
ISSN:	1208-6045 0008-4204
DOI:	10.1139/p77-085
Popis:	G-5, 200 μm, nuclear emulsion plates were exposed to a bremsstrahlung photon spectrum of known intensity, produced by 100 MeV electrons at the Saskatchewan Linear Accelerator. The emulsions were later scanned for electron–positron pairs. Measurements were made such that the pair opening angle could be determined. From the resulting distribution of angles, the photon spectra predicted by the theories of Borsellino and Olsen, relating the most probable photon energy to a measured opening angle, were calculated. These spectra were compared to the experimental photon spectrum for the energy interval 50 to 100 MeV. Agreement was obtained for the theory of Olsen, within experimental error.
Databáze:	OpenAIRE
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