【摘 要】
：
Under vacuum conditions,radon is completely condensed on a small metal surface through the precise control of the condensation temperature gradient.The absolute
【机 构】
：
Radiation Metrology Division,
【出 处】
：
Annual Report of China Institute of Atomic Energy
论文部分内容阅读
Under vacuum conditions,radon is completely condensed on a small metal surface through the precise control of the condensation temperature gradient.The absolute measurementof radon activity can be achieved by the small solid angle alpha method with a semiconductor detector,through the measurements and corrections of several of factors.In this method,the
Under vacuum conditions, radon is completely condensed on a small metal surface through the precise control of the condensation temperature gradient. The absolute measurement of radon activity can be achieved by the small solid angle alpha method with a semiconductor detector, through the measurements and corrections of several of factors.In this method, the
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