Details

Autor(en) / Beteiligte

• Ahnen, Max L.
• Hose, Jurgen
• Menzel, Uta
• Mirzoyan, Razmik

Titel

Light Induced Afterpulses in Photomultipliers

Ist Teil von

• IEEE transactions on nuclear science, 2015-06, Vol.62 (3), p.1313-1317

Ort / Verlag

IEEE

Erscheinungsjahr

2015

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• Various spurious effects limit the effectiveness of Photomultipliers when used in low-light-level coincidence counting experiments. One of these effects is afterpulses from light emission in the Photomultiplier. Here we present a study on the light emission in Photomultipliers using a variety of methods. First we image the light emission directly. Second we characterize the light emission spectrum. Finally we investigate the time resolved light emission. In particular we find that, not only the dynodes "glow," but also the support structure emits light. A fluorescent effect is found. The experiments performed help to understand the fundamental effects of light emission and afterpulses in Photomultipliers.