Physical Properties of LYSO Scintillator for NN-PET Detectors

Author

Du, Junwei ; Wang, Yonggang ; Zhang, Lijun ; Zhou, Zhonghui ; Xu, Zizhong ; Wang, Xiaolian

Author_Institution

Dept. of Modern Phys., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2009

fDate

17-19 Oct. 2009

Firstpage

1

Lastpage

5

Abstract

Cerium doped lutetium oxyorthosilicate scintillators, such as LYSO, which possess high stopping power, high light output and fast decay time, are promising candidates for use in positron emission tomography. In this paper, the luminescence and nuclear spectroscopic properties of two LYSO samples, used in the NN-PET detectors, are studied. UV-excited emission spectra show that maximum emission spectral values are within the range of 400-425 nm, which is well compatible with spectral response of PMT H7546B. The decay time, energy resolution, light output and energy spectra related to coincidence time window were investigated. The decay times of the two LYSO samples are 34.16plusmn1.43ns, 34.26plusmn1.95ns, respectively. The energy resolution and the light output, relative to Nal(Tl), are 10.25%plusmn0.06%, 10.17%plusmn0.10% and 75.3plusmn5.7, 76.1plusmn5.8 respectively when detected with PMT XP2262B. The energy spectra change obviously with coincidence time window and coincidence energy resolution is 14% when obtained using coincidence detector based on LYSO and H7546B.

Keywords

cerium; lutetium compounds; photoluminescence; positron emission tomography; scintillation counters; ultraviolet spectra; LYSO scintillator; Lu₂SiO₅:Ce; NN-PET detectors; PMT XP2262B; UV excited emission spectra; decay time; energy resolution; energy spectra; light output; luminescence; lutetium oxyorthosilicate scintillators; nuclear spectroscopy; positron emission tomography; wavelength 400 nm to 425 nm; Cerium; Energy resolution; Event detection; Face detection; Photodetectors; Photonic crystals; Positron emission tomography; Radiation detectors; Solid scintillation detectors; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics, 2009. BMEI '09. 2nd International Conference on

Conference_Location

Tianjin

Print_ISBN

978-1-4244-4132-7

Electronic_ISBN

978-1-4244-4134-1

Type

conf

DOI

10.1109/BMEI.2009.5305107

Filename

5305107