SEMINAR 

　　Key Laboratory of Transparent Opto-fuctional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences 

　　中国科学院上海硅酸盐研究所透明光功能无机材料重点实验室 

　　Recent R&D trends in inorganic single crystal scintillator materials for radiation detection 

　　Speaker 

　　Prof. Martin Nikl  

　　（中国科学院国际访问学者） 

　　Institute of Physics AC CR, Cukrovarnicka 10, 16253 Prague, Czech Republic 

　　时间：7月23日 （周四）9:00 AM 

　　地点：4号楼14楼第2会议室 

　　联系人：潘裕柏 研究员（2820） 

　　         李  江 研究员（2816） 

　　Brief introduction:  

　　Martin Nikl graduated in 1981 at Faculty of Nuclear Science and Physical Engineering, Czech Technical University in Prague, and obtained his PhD. in 1986 in Institute of Physics, CAS. Currently serves as the department head and vice-director for targeted research in Institute of Physics, AS CR. Associated professor at Czech Technical University. His research interests include luminescence and scintillation mechanism in wide band-gap solids, energy transfer processes and role of material defects in them. He is the coordinator and participant in about 30 domestic and 10 international projects so far in the field of scintillation materials. Author and co-author of more than 600 papers in the refereed impacted international journals, 48 papers in non-impacted journals, six chapters in books and 49 papers in conference proceedings. Author and co-author of 38 invited keynote and plenary lectures at International Conferences. The publications received more than 6800 citations (Scopus, auto-citations excluded), Hirsch factor, H=49. He was an invited professor at (i) Institute for Materials Research, Tohoku University, Sendai, Japan, (ii) Universita di Milano-Bicocca, Milan, Italy and (iii) Shanghai Institute of Ceramics, CAS, Shanghai, China. 

　　Abstract:  

　　In this lecture the major achievements and research and development (R&D) trends in the field of single crystal scintillator materials in the last decade are described. Two material families are included, namely those of halide and oxide compounds. In most cases the host crystals are doped by Ce³⁺, Pr³⁺ or Eu²⁺ rare earth ions. Their spin- and parity-allowed 5d-4f transitions enable a rapid scintillation response, on the order of tens to hundreds of nanoseconds. Technological recipes, extended characterization by means of optical and magnetic spectroscopies and theoretical studies are described. The latter provide further support to experimental results and provide better understanding of the host electronic band structure, energy levels of specific defects and the emission centers themselves.  

　　The intensity and extent of R&D in the scintillator field in the last two decades have been driven by a number of applications requiring tailored materials with specific parameters of critical importance for a particular use. While in 1990s applications were mainly in high energy physics, later medical imaging and finally the security-related techniques came into play. Though less known, high tech industry often, on a very short time scale, also calls for specific scintillator materials for their devices; here electron microscopy and detection of particle beams in general can be mentioned.