医院中子照射器热中子束能谱特性研究  

Neutron Spectrum of Thermal Neutron Beam in IHNI

作　　者：鲁谨[1] 夏普[1] 李义国[1] 彭旦[1] 吴小波[1] 张金花[1] 邹淑芸[1] 洪景彦[1] 郝倩[1] 刘心灵[1] 

机构地区：[1]中国原子能科学研究院反应堆工程研究设计院,北京102413

出　　处：《原子能科学技术》2012年第B12期829-832,共4页Atomic Energy Science and Technology

摘　　要：医院中子照射器是我国建造的第1座用于医疗目的的微型反应堆,已于2009年12月7日首次达临界,2010年1月22日达到满功率运行。在治疗前,需测量出口处的中子通量密度及能谱等参数,为后续实验提供依据。本文用MCNP建立医院中子照射器模型,得到能谱计算值。选用金箔活化法测量绝对中子通量密度,多箔活化法测量中子能谱,用SAND-Ⅱ程序解谱,并将实验结果与计算结果进行了比较。In-Hospital Neutron Irradiator（IHNI） is the first miniature neutron source reactor for special medical treatment purpose.It got critical on December 7th,2009,and went to full power on January 22th,2010.Parameters,such as the neutron flux density and neutron spectrum of the thermal neutron beam in IHNI,should be given before the medical treatment.Model was built and calculation results were given by MCNP program.The neutron flux density was measured by gold foil activation technique,and the neutron spectrum was measured by multiple foils activation technique and unfolded by SAND-Ⅱ program.Detectors were irradiated and then measured by HPGe.Neutron flux density and distribution was given,and neutron spectrum was unfolded with SAND-Ⅱ program.

关 键 词：医院中子照射器 热中子 中子通量密度 中子能谱 

分 类 号：TL411.7[核科学技术—核技术及应用]