Feasibility study of a nano-particle doped glass as a scintillation counter

2009 Fiscal Year Final Research Report

• Project/Area Number: 19540293
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University
• Principal Investigator: HARA Takanori Osaka University, 素粒子原子核研究所, 准教授 (70283827)
• Project Period (FY): 2007 – 2009
• Keywords: 粒子識別 / シンチレーション / 検出器

Research Abstract

A new material "nano-particle doped glass" is studied whether or not it is applicable as a scintillation counter to detect a charged particle. In this study, two samples are used. One is the sample in which 2.7nm-radius silicon particles are doped at a rate of 2.8×10^<-5>mol/l (Sample A) and the other in which 3.8nm-radius silicon particles are doped at a rate of 1.2×10^<-5>mol/l (Sample B). Also a glass without doping any silicon nano-particle is tested as a reference. Although the Sample A and B produce scintillation light with a peak of about 570nm and 670nm in the wavelength distribution respectively, we found that these do not lie in the wavelength range where typical photo-sensors are sensitive. Not only because of this fact but also because of opacity, difficulty of making a thick and large sample, it is concluded that the nano-particle doped glass is not suitable for a scintillation counter with a current technology.