Development of transparent scintillators via controlling nano- and micro-scale structure

2017 Fiscal Year Final Research Report

• Project/Area Number: 26249147
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Nara Institute of Science and Technology (2015-2017); Kyushu Institute of Technology (2014)
• Principal Investigator: Yanagida Takayuki 奈良先端科学技術大学院大学, 物質創成科学研究科, 教授 (20517669)
• Co-Investigator(Renkei-kenkyūsha): Fujimoto Yutaka 東北大学, 工学研究科, 助教 (60639582) ; Koshimizu Masanori 東北大学, 工学研究科, 准教授 (40374962) ; Watanabe Kenichi 名古屋大学, 工学研究科, 准教授 (30324461)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: シンチレータ / ガンマ線 / 透明多結晶

Outline of Final Research Achievements

The advantage of transparent ceramic scintillators are high energy transfer efficiency due to the suppression of nano-scale defect and high transfer efficiency of optical photons via controlling the micro-scale grain. In order to develop efficient scintillators, doping of some ions which do not posses electron levels for luminescence sometimes works well. In this study, we developed new scintillators by controlling these properties. As a result, we achieved the light yield of 70000 ph/MeV, scintillation decay time of 80 ns, and energy resolution of 6% at 662 keV one year before the end of this project.

Free Research Field

放射線計測