核电子学与探测技术
覈電子學與探測技術
핵전자학여탐측기술
NUCLEAR ELECTRONICS & DETECTION TECHNOLOGY
2013年
12期
1448-1450,1484
,共4页
王亮%莫钊洪%张宏俊%赵德山%窦天军
王亮%莫釗洪%張宏俊%趙德山%竇天軍
왕량%막쇠홍%장굉준%조덕산%두천군
主动中子多重符合%源-样耦合常数%增殖系数
主動中子多重符閤%源-樣耦閤常數%增殖繫數
주동중자다중부합%원-양우합상수%증식계수
active neutron multiplicity counting%coupling%multiplication
利用MCNPx软件对主动中子多重符合测量技术涉及的源-样耦合常数、增殖系数进行理论模拟,获得了不同形态样品两参量间的经验公式,初步分析了影响源-样耦合常数的主要因素,为HEU中235 U质量的认证测量及探测精度的提高奠定了重要的理论基础。
利用MCNPx軟件對主動中子多重符閤測量技術涉及的源-樣耦閤常數、增殖繫數進行理論模擬,穫得瞭不同形態樣品兩參量間的經驗公式,初步分析瞭影響源-樣耦閤常數的主要因素,為HEU中235 U質量的認證測量及探測精度的提高奠定瞭重要的理論基礎。
이용MCNPx연건대주동중자다중부합측량기술섭급적원-양우합상수、증식계수진행이론모의,획득료불동형태양품량삼량간적경험공식,초보분석료영향원-양우합상수적주요인소,위HEU중235 U질량적인증측량급탐측정도적제고전정료중요적이론기출。
Coupling and multiplication involved in the measurement technology of active neutron multiplicity counting were simulated by MCNPx in this paper , and the empirical formulas of two parameters from different samples were achieved .The main factor effecting coupling was analyzed preliminary , which laid the important theoretical basis for the verification measurement and detection precision of the 235 U mass in HEU.