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Lutetium–yttrium oxyorthosilicate

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Lutetium–yttrium oxyorthosilicate
Identifiers
PubChem CID
Properties
Chemical formula Lu2(1-x)Y2xSiO5
Molar mass 988.21 g/mol
Density Between 4.44 g/cm and 7.4 g/cm, depending on Y/Lu ratio
Melting point 2,047 °C (3,717 °F; 2,320 K)
Refractive index (nD) 1.82
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Lutetium–yttrium oxyorthosilicate, also known as LYSO, is an inorganic chemical compound with main use as a scintillator crystal for gamma radiation detection. Its chemical formula is Lu2(1-x)Y2xSiO5. The percentage of yttrium varies considerably, with values in the literature ranging from 5% to 70%. It is commonly used to build screens and electromagnetic calorimeters in particle physics. LYSO crystals have the advantages of high light output and density, quick decay time, excellent energy resolution. The crystals are often grown in boules using the Czochralski process, and cutting or polishing can be challenging because LYSO is brittle and hard.





References

  1. "Lutetium orthosilicate". PubChem. National Center for Biotechnology Information. Retrieved 2024-08-02.
  2. "Yttrium Orthosilicate - Y2SiO5 | Scientific Materials | YSO LASER Materials".
  3. Daghighian, F.; Shenderov, P.; Pentlow, K.S.; Graham, M.C.; Eshaghian, B.; Melcher, C.L.; Schweitzer, J.S. (August 1993). "Evaluation of cerium doped lutetium oxyorthosilicate (LSO) scintillation crystals for PET" (PDF). IEEE Transactions on Nuclear Science. 40 (4): 1045–1047. Bibcode:1993ITNS...40.1045D. doi:10.1109/23.256710. S2CID 28011497. Retrieved 18 November 2022.
  4. Lowdon, Matthew; Martin, Peter G.; Hubbard, M.W.J.; Taggart, M.P.; Connor, Dean T.; Verbelen, Yannick; Sellins, P.J.; Scott, Thomas B. (2019). "Evaluation of Scintillator Detection Materials for Application within Airborne Environmental Radiation Monitoring". Sensors. 18 (8): 13. Bibcode:2019Senso..19.3828L. doi:10.3390/s19183828. PMC 6767284. PMID 31487922.
  5. Radiation Detection and Measurement, p. 249, at Google Books
  6. Chen, Jianming; Mao, Rihua; Zhang, Liyuan; Zhu, Ren-Yuan (2007). "Large Size LSO and LYSO Crystals for Future High Energy Physics Experiments" (PDF). IEEE Transactions on Nuclear Science. 4 (3): 718–724. Bibcode:2007ITNS...54..718C. doi:10.1109/TNS.2007.897823. S2CID 6606410.
  7. Shang, Xi; Xie, Qiangqiang; Xie, Siwei; Yu, Xin; Xu, Jianfeng; Peng, Qiyu (2021). "A Novel Portable Gamma Radiation Sensor Based on a Monolithic Lutetium-Yttrium Oxyorthosilicate Ring". Sensors. 21 (10): 16. Bibcode:2021Senso..21.3376Z. doi:10.3390/s21103376. PMC 8150370. PMID 34066224.


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