[5a-S43-1~9] 2.3 Application, radiation generators, new technology

[5a-S43-9] Application of beta-ray spectrometer for antique watch

〇Etsuko Furuta¹, Takuya Saze², kazuo Shimada³ (1.Ochanomizu Univ., 2.NIFS, 3.Crown Misters)

Keywords:beta-ray spectrometer, plastic scintilator, internal conversion electron

Four internal conversion electron peaks were used to estimate the relation between channel and beta-ray energy. The end point of continuous beta-energies from other 6 beta emitters were used to draw a calibration curve.Using the calibration curve, Rolex watches were measured their beta-energies and one of them was estimated that it was not a real Rolex.