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调研keV能区单能中子的获得方法时,发现在加速器上利用反应45Sc(p,n)45Ti的共振峰可获得0.5keV￣40keV能区比较理想的单能中子。对德国的Cosack、英国的David、日本的Baba等人利用加速器获得该能区单能中子及其测量中子注量率的方法进行了比较和详细分析,并做了相关计算。明确了实验过程中应注意的事项及一些优化措施。
When investigating the method of obtaining single neutron in keV energy region, we found that the ideal single neutron energy of 0.5keV ~ 40keV can be obtained by using the 45Sc (p, n) 45Ti resonance peak at the accelerator. The methods of obtaining single-energy neutron energy neutron and measuring the neutron fluence rate by using accelerator in Cosack of Germany, David of UK, Japan Baba and others were compared and analyzed in detail and related calculations were made. Clear the experiment should pay attention to the matters and some optimization measures.