【摘要】 用屏栅电离室对 3.6 7MeV与 4 .4 2MeV中子6Li(n ,t) 4He反应微分截面进行了测量。利用氘气体靶通过D(d ,n) 3 He反应产生中子 ,用BF3 和液闪探测器 (NE2 13)进行相对中子通量监测 ,绝对中子通量用2 3 8U(n ,f)与H(n ,p)反应来刻度。测量结果表明 ,氚的质心系微分截面在中子能量为 3.6 7MeV时很接近 90°对称 ,而到 4 .4 2MeV时则明显前倾更多还原

【Abstract】 By using a gridded ionization chamber, the differential cross sections and angle integrated cross sections for the 6Li(n,t) 4He reaction were measured at neutron energies of 3.67 and 4.42MeV. The neutrons were produced through D(d,n) 3He reaction by a deuteron gas target. Absolute neutron flux was determined through 238 U(n,f) and H(n,p) reactions. At 3.67MeV the differential cross section for triton is almost 90° symmetric but it is obviously forward peaked at 4.42MeV in the center-of-mass reference system.更多还原