Development of subnanosecond scintillators using superradiance

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630426
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering
• Research Institution: Tohoku University
• Principal Investigator: ASAI Keisuke 東北大学, 工学(系)研究科(研究院), 教授 (60231859)
• Co-Investigator(Kenkyū-buntansha): KOSHIMIZU Masanori 東北大学, 大学院工学研究科, 准教授 (40374962)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 超放射 / サブナノ秒 / 減衰時定数 / π電子

Outline of Final Research Achievements

In this study, we aim at developing fast scintillation materials having subnanosecond decay time constant of scintillation using superradiance. We have chosen tetracene as a candidate compound, for which suparradiance has been observed under pulsed laser irradiation. We have grown single crystals of tetracene with evaporation method. Temporal profiles of scintillation were measured using a pulsed electron beam as an excitation source. The observed decay time constant of the scintillation of tetracene was on the order of nanoseconds. Unfortunately, subnanosecond decay time constant has not been achieved, fast scintillation was achieved using tetracene.

Free Research Field

放射線物理化学