Lutetium–yttrium oxyorthosilicate
Identifiers | |
---|---|
Properties | |
Lu2(1-x)Y2xSiO5 | |
Density | 7.3 g/cm3 |
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 [77 °F], 100 kPa). | |
Infobox references | |
Lutetium–yttrium oxyorthosilicate, also known as LYSO, is an inorganic chemical compound with main use as a scintillator crystal for gamma radiation detection. [1] Its chemical formula is Lu2(1-x)Y2xSiO5. 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. [2] The crystals are often grown in boules using the Czochralski process, and cutting or polishing can be challenging because LYSO is brittle and hard. [3]
Density (g/cm3) | 7.4 |
Effective Atomic Number | 66 |
Radiation length (cm) | 1.10 |
Decay Constant (ns) | 40-44 |
Peak Emission (nm) | 428 |
Light Yield (Relative BGO=100%) | 190 |
Index of Refraction | 1.82 |
Peak excitation (nm) | 375 |
Radiation Hardness (rad) | >106 |
Melting Point (°C) | 2050 |
Hardness (Mohs) | 5.8 |
References[]
- ^ 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.
- ^ 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.
- ^ 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.
Categories:
- Phosphors and scintillators
- Crystals
- Silicates
- Lutetium compounds
- Yttrium compounds
- Inorganic compound stubs