Production of an electron-positron pair,matter & antimatter,in the ALEPH detector at CERN,the European particle physics lab outside Geneva. In this electronic display,the basically cylindrical detector is outlined in white & blue. An electron and positron,accelerated to high energy in CERN's LEP collider,have entered (unseen) from left & right & annihilated in the centre of the detector to produce sprays of charged particles (blue dotted tracks). Also produced is an unseen gamma- ray photon,which materialises as matter and antimatter in the form of an electron (yellow) and positron (red). Because they are of lower energy,they travel in spirals in ALEPH's magnetic field | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Cern |
Taille de l’image : | 3902 px × 3000 px |
Model Release : | Non requis |
Property Release : | Non requis |
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