곡류 중 수입이 활발한 밀과 옥수수에 대하여 국제적으로 이용이 허가된 감마선과 전자선 에너지를 총 흡수선량 를 조사한 다음 photostimulated luminescence(PSL), thermoluminescence(TL) 및 electron spin resonance(ESR)를 분석하여 조사여부 검지 특성을 확인하였다. PSL 분석 결과, 두 시료 모두 조사선원에 관계없이 비조사구에서는 photon count/sec 값으로 700(nega

This study determined the photostimulated luminescence(PSL), thermoluminescence(TL), and electron spin resonance(ESR) properties of wheat and corn irradiated with 0-10 kGy of gamma-ray or electron-beam. PSL values of both irradiated grains, regardless of radiation source, were 241-429 photons/sec in nonirradiated samples(negative values, defined as photons/60 sec) and 5,528-40,870 photons/60 sec in irradiated ones(positive values, defined as photons/sec), thereby distinguishing irradiated from nonirradiated samples. The TL glow curves() peaked at around in nonirradiated samples, but at about in irradiated samples, at high intensities, regardless of radiation source. The TL ratios() calculated to strengthen data reliability were less than 0.03 for nonirradiated samples and over 0.20 for irradiated materials, in good agreement with threshold values for nonirradiated() and irradiated() samples. ESR analysis was not applicable in identification of irradiated wheat and corn. Electron-beam irradiation resulted in higher PSL and TL signals than did gamma-rays, at the same applied doses.

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