用缓发中子计数法测铀时,每隔90秒左右就要换一次样品,用堆中子短照作纯仪器多元素活化分析时每隔5—6分钟也要更换一次样品,即使在测量长半衰期核素时,每天也要更换几十次样品。显然,靠人工换样,对工作人员不仅劳动强度大而且还要受到较强 With the slow neutron count method of measuring uranium, every 90 seconds or so will have to change the sample, heap neutron snapshot as a pure instrument multi-element activation analysis every 5-6 minutes to be replaced once the sample, even in the When measuring long half-life nuclides, dozens of samples are also changed daily. Obviously, by manual change, the staff not only labor-intensive, but also be strong