- P-ISSN 1225-0163
- E-ISSN 2288-8985
<TEX>$^{241}Am-Be$</TEX>(<TEX>${\alpha}$</TEX>, n) 중성자 선원의 중성자/감마선(n/<TEX>${\gamma}$</TEX>) 복합 방사선장에서 <TEX>$^6Li$</TEX>(n, <TEX>${\alpha}$</TEX>)T 핵반응을 이용하고 두 섬광체, BC 501(<TEX>$C_8H_{10}$</TEX>)과 Cerium의 섬광 감쇠 시간차와 동일 섬광체 내에서의 n/<TEX>${\gamma}$</TEX>에 대한 서로 다른 섬광감쇠 시간차를 병용하여 PSD(Pulse Shape Disciminator) 및 CFD(Constant Fraction Discriminator) 방법으로 n와 <TEX>${\gamma}$</TEX>성분을 분리 측정하였으며 <TEX>$^6Li$</TEX> 속중성자 분광계의 figure of merit는 1.36으로 평가되었다.
In n/<TEX>${\gamma}$</TEX> mixed field of <TEX>$^{241}Am-Be$</TEX>(<TEX>${\alpha}$</TEX>, n) neutron source, we seperated the neutron component from gamma ray component. At the center of the detector, <TEX>$^6Li$</TEX> was doped on the cerium activated glass plate for <TEX>$^6Li$</TEX>(<TEX>${\alpha}$</TEX>, n)T nuclear reaction. The time differences of the light following excitations by different scintillators, BC501(<TEX>$C_8H_{10}$</TEX>) and cerium, and by the same scintillator for different radiations as neutrons and gamma-rays are used to apply the methods of PSD(Pulse Shape Discriminator) and CFD(Constant Fraction Discriminator). The figure of merit of <TEX>$^6Li$</TEX> fast neutron spectrometer is estimated as 1.36.