Plastic Scintillators Enable Live Imaging of ³²P-labelled Phosphorus Movement in Large Plants

Abstract

We updated our imaging system, namely real-time radioisotope imaging system (RRIS) to observe ³²P movement in large plants using a large size scintillator. In the previous version of RRIS, the view was limited by the size of a CsI (Tl) scintillator deposited on a fiber optic plate (FOS). However, owing to the high price and difficulty in handling of FOS, the view area was limited to 100×200 mm. In this study, we evaluated 5 large and low-cost plastic scintillators and showed that plastic scintillators can be used in RRIS for the quantitative analysis of ³²P. We also evaluated the resolution of the imaging system with plastic scintillator.