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Identification of bremsstrahlung events in gamma-ray tracking detectors
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Helmholtz Association, Germany.
2010 (Engelska)Ingår i: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 5, artikel-id P10004Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Tracking of gamma-rays in position sensitive germanium and silicon detectors is a relatively new concept. In the energy region of a few hundred keV up to a few MeV it aims at identification of the sequence and positions of photon scattering points inside a detector. This is achieved by verifying the energy and momentum conservation laws for each Compton interaction as well as the scattering and absorption probabilities. By calculating multiple figures of merit, each favoring a specific class of events (e.g. full-energy, escape and bremsstrahlung), one can identify these events and increase the peak/total ratio of the full-energy spectrum. As an example, events where bremsstrahlung photons are produced by Compton recoiled electrons are identified. A further extension of this technique may allow identification of pair production events and extend the tracking analysis into a higher energy region of several MeV where pair production dominates.

Ort, förlag, år, upplaga, sidor
2010. Vol. 5, artikel-id P10004
Nyckelord [en]
Particle identification methods, Gamma telescopes, Solid state detectors
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:su:diva-51434DOI: 10.1088/1748-0221/5/10/P10004ISI: 000283797200009OAI: oai:DiVA.org:su-51434DiVA, id: diva2:385691
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Tillgänglig från: 2011-01-12 Skapad: 2011-01-10 Senast uppdaterad: 2017-12-11Bibliografiskt granskad

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