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Thermoluminescence of CVD diamond films used in photon dosimetry
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SYSNO ASEP 0185374 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Thermoluminescence of CVD diamond films used in photon dosimetry Author(s) Pospíšil, J. (CZ)
Novák, R. (CZ)
Sopko, B. (CZ)
Spěváček, V. (CZ)
Hlídek, P. (CZ)
Matějka, P. (CZ)
Macková, Anna (UJF-V) RID, ORCID, SAI
Cejnarová, Andrea (FZU-D)
Juha, Libor (FZU-D) RID, ORCID, SAI
Krása, Josef (FZU-D) RID, ORCIDSource Title Physica Status Solidi A : Applied Research - ISSN 0031-8965
Roč. 185, č. 1 (2001), s. 195-202Number of pages 8 s. Language eng - English Country DE - Germany Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders R&D Projects KSK1010104 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) Annotation The diamond films, properties of which art: presented in this contribution, were grown on a silicon substrate using the microwave plasma-enhanced chemical vapour deposition (MPECVD) technique. The films were characterised by means of Raman/photoluminescence/FTIR spectroscopy, XRD, RES and elastic recoil detection analysis (ERDA). Thermoluminescent (TL) responses of this material to photons provided by radionuclide Co-60 source (1.173/1.332 MeV) over a dose range from 1 to 50 Gy were measured. During the initial, i.e.first irradiation cycle, the dependencies of TL signals onthe gamma-ray doses seem to be quite linear up to 20 Gy. However, dramatic changes in the evolution of the TL signals occur during further irradiation, i.e. when the irradiation continues with another irradiation cycle. Then the sensitivity of the TL material to high-energy photons increases significantly with the dose. An explanation of this phenomenon lies very likely in the radiation driven formationof TL active defects. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2002
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