How to Increase The Fluorescence Yield of Lead Tungstate
Lead tungstate crystals have become a new generation of scintillating materials due to the high density, short radiation length and Moliere radius fast flicker decay time, strong anti-radiation damage ability, air deliquescence, chemical stability and low price. In recent years, lead tungstate crystals have also attracted attention in the field of nuclear medical equipment applications, especially in the positron emission tomography (PET) and other nuclear medicine imaging has become a hot research at home and abroad. However, lead tungstate scintillation crystals have many advantages, but lower fluorescence yields limit the use of lead tungstate crystals in high energy applications. Therefore, to improve the fluorescence yield of lead tungstate, we can better expand its field of application. At present, there are commonly used ways to improve the low light yield of lead tungstate crystals: (1) Improve the growth conditions, improve the purity of raw materials and adjus...