|Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2009: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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.