کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1829853 | 1526493 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Investigation of luminescent properties of LSO:Ce, LYSO:Ce and GSO:Ce crystal scintillators under low-energy γ-ray excitation used in nuclear imaging Investigation of luminescent properties of LSO:Ce, LYSO:Ce and GSO:Ce crystal scintillators under low-energy γ-ray excitation used in nuclear imaging](/preview/png/1829853.png)
LSO:Ce, LYSO:Ce and GSO:Ce single-crystal scintillator light emission characteristics were studied in the low γ-ray energy range (99mTc source) used in nuclear medical imaging. The absolute luminescence efficiency and the optical emission spectrum of the three scintillators were measured, under γ-ray excitation using an integration sphere coupled to a photomultiplier and an optical spectrometer, respectively. Spectral compatibility of all scintillators to optical sensors was also estimated. The absolute luminescence efficiency of all crystals was found adequately high (8.7 μW m−2/μGy s−1 for GSO:Ce, 15.3 μW m−2/μGy s−1 for LYSO:Ce and 20.0 μW m−2/μGy s−1 for LSO:Ce). Their emission spectra were found compatible (57–94%) to currently employed optical photon detectors.
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 581, Issues 1–2, 21 October 2007, Pages 99–102