Determining aerosol particles by in-air micro-IL analysis combined with micro-PIXE

大気中IL顕微分光分析とマイクロPIXE法の併用によるエアロゾル粒子の顕微イメージングへのアプローチ

加田 渉; 佐藤 隆博; 横山 彰人; 江夏 昌志; 神谷 富裕

Kada, Wataru; Sato, Takahiro; Yokoyama, Akihito; Koka, Masashi; Kamiya, Tomihiro

Growing interests are being paid for the behaviour of several kinds of aerosols, known as a long-distance transmission medium of microbes and the viruses in the atmosphere. In this study a new microscopic spectroscopy and imaging system of ion-microbeam-induced luminescence (Ion-Luminescence, IL) is being developed on the beam line of micro-PIXE analysis system of a 3 MV single-ended accelerator at Takasaki TIARA facility, TARRI, JAEA. Individual imaging and analysis of specific kind of aerosols targets were performed using this system for the characterization of fluorescence properties of micrometer-sized particulate aerosols. Then the monochromatic IL images were obtained from several aerosol particles with wavelength at a band around 415 nm and 430 nm. The IL spectra obtained from aerosol target were also observed to be clearly different from those of other silicon dioxide particles.