Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/4454
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 | Authors: | Ferreira, L. F. Requicha Ferreira, H. M. N. B. L. Veloso, J. F. C. A. Santos, J. M. F. dos |
Keywords: | Inorganic scintillators; NaI(Tl); Energy non-linearity | Issue Date: | 2004 | Citation: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 516:2-3 (2004) 486-491 | 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. | URI: | https://hdl.handle.net/10316/4454 | DOI: | 10.1016/j.nima.2003.08.171 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
file8c32fa693ff5485ca2fbdc46ecb87bb0.pdf | 239.69 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
6
checked on Oct 14, 2024
WEB OF SCIENCETM
Citations
4
checked on Oct 2, 2024
Page view(s)
332
checked on Oct 15, 2024
Download(s)
297
checked on Oct 15, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.