【摘要】 采用PIPS(PlanarImplantedPassivatedSilicon)探测器测量α气溶胶浓度,使用能量甄别的方法可以将人工α放射性和天然放射性区别开来,通过校正因子修正天然放射性对人工放射性的影响。由真空泵取样,连续测量空气中的气溶胶浓度。PIPS探测器能量分辨率好,在50Bq/m3的环境中,对239Pu(95%置信度)可达0.1Bq/m3。更多还原

【Abstract】 The pollution of long life α radiation is the key fraction what harm to health, so measuring α concentration fast in air is an important work. Long life radiation is discriminated from natural radiation by energy, and the modification coefficient is used to rectify the result. The PIPS detector is used to improved energy discrimination. On the radon level of 500 Bq/m³, the precision is 0.1 Bq/m³ for （）²³⁹Pu at the 95% confidence level.更多还原