Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/4454
DC Field | Value | Language |
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dc.contributor.author | Ferreira, L. F. Requicha | - |
dc.contributor.author | Ferreira, H. M. N. B. L. | - |
dc.contributor.author | Veloso, J. F. C. A. | - |
dc.contributor.author | Santos, J. M. F. dos | - |
dc.date.accessioned | 2008-09-01T11:07:23Z | - |
dc.date.available | 2008-09-01T11:07:23Z | - |
dc.date.issued | 2004 | en_US |
dc.identifier.citation | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 516:2-3 (2004) 486-491 | en_US |
dc.identifier.uri | https://hdl.handle.net/10316/4454 | - |
dc.description.abstract | The response of a YAP, NaI(Tl) and BaF2 scintillators to X-rays with energies around the Y, I, and Ba K-absorption edges, respectively, was investigated. For all the scintillators, the amplitude response follows different linear trends for X-ray energies below and above the respective K-edges, presenting a discontinuity at these energies. An abrupt decrease of about 3%, 5% and 2% were observed in the detector amplitude at the K-edges, for the YAP, the NaI(Tl) and the BaF2 scintillator, respectively, corresponding to a decrease of 0.5±0.1, 1.7±0.3 and 0.8±0.2 keV in the energy calibration line. These discontinuities result in a region within 0.5±0.1, 1.6±0.3 and 0.9±0.2 keV where the X-ray energy cannot be obtained unambiguously. The scintillation yields for X-rays present abrupt decreases of about 3%, 4% and 2%, respectively, at the K-edges. The measured non-linearity effects are significantly larger than those obtained for gaseous and semiconductor detectors. The higher amplitude non-linearity observed in NaI(Tl) is attributed to the larger light yield non-linearity in the electron response of this crystal. | en_US |
dc.description.uri | http://www.sciencedirect.com/science/article/B6TJM-49N7V56-3/1/6bc7816ad91bca6e857e9a848f8eb8a2 | en_US |
dc.format.mimetype | aplication/PDF | en |
dc.language.iso | eng | eng |
dc.rights | openAccess | eng |
dc.subject | Inorganic scintillators | en_US |
dc.subject | NaI(Tl) | en_US |
dc.subject | Energy non-linearity | en_US |
dc.title | Energy non-linearity effects in the response of ionic crystal scintillators to X-rays with energy in the region of the K-absorptions edges: experimental results | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1016/j.nima.2003.08.171 | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | Com Texto completo | - |
item.languageiso639-1 | en | - |
crisitem.author.researchunit | LIBPhys - Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics | - |
crisitem.author.parentresearchunit | University of Coimbra | - |
crisitem.author.orcid | 0000-0002-7107-7203 | - |
crisitem.author.orcid | 0000-0002-8841-6523 | - |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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file8c32fa693ff5485ca2fbdc46ecb87bb0.pdf | 239.69 kB | Adobe PDF | View/Open |
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