$n/{\gamma}$ 복합 방사선장에서의 중성자 스펙트럼 분리 측정연구(1)
Neutron Spectrum Measurement in $n/{\gamma}$ Mixed Field(1)
분석과학 / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1993, v.6 no.5, pp.501-508
이광필
김원식
이광필,
&
김원식.
(1993). <TEX>$n/{\gamma}$</TEX> 복합 방사선장에서의 중성자 스펙트럼 분리 측정연구(1). , 6(5), 501-508.
초록
$^{241}Am-Be$(${\alpha}$, n) 중성자 선원의 중성자/감마선(n/${\gamma}$) 복합 방사선장에서 $^6Li$(n, ${\alpha}$)T 핵반응을 이용하고 두 섬광체, BC 501($C_8H_{10}$)과 Cerium의 섬광 감쇠 시간차와 동일 섬광체 내에서의 n/${\gamma}$에 대한 서로 다른 섬광감쇠 시간차를 병용하여 PSD(Pulse Shape Disciminator) 및 CFD(Constant Fraction Discriminator) 방법으로 n와 ${\gamma}$성분을 분리 측정하였으며 $^6Li$ 속중성자 분광계의 figure of merit는 1.36으로 평가되었다.
- keywords
-
n/<TEX>${\gamma}$</TEX> mixed field,
<TEX>$^{241}Am-Be$</TEX>(<TEX>${\alpha}$</TEX>,
n),
<TEX>$^6Li$</TEX>(n,
<TEX>${\alpha}$</TEX>)T,
decay time,
scintillator,
BC501(<TEX>$C_8H_{10}$</TEX>),
cerium,
PSD,
CFD,
figure of merit
Abstract
In n/${\gamma}$ mixed field of $^{241}Am-Be$(${\alpha}$, n) neutron source, we seperated the neutron component from gamma ray component. At the center of the detector, $^6Li$ was doped on the cerium activated glass plate for $^6Li$(${\alpha}$, n)T nuclear reaction. The time differences of the light following excitations by different scintillators, BC501($C_8H_{10}$) 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 $^6Li$ fast neutron spectrometer is estimated as 1.36.
- keywords
-
n/<TEX>${\gamma}$</TEX> mixed field,
<TEX>$^{241}Am-Be$</TEX>(<TEX>${\alpha}$</TEX>,
n),
<TEX>$^6Li$</TEX>(n,
<TEX>${\alpha}$</TEX>)T,
decay time,
scintillator,
BC501(<TEX>$C_8H_{10}$</TEX>),
cerium,
PSD,
CFD,
figure of merit