The thermal defect of A-150 plastic and graphite for low-energy protons.
The thermal defect of A-150 plastic and graphite for low-energy protons.
复制标题
A-150 塑料和石墨对于低能质子的热缺陷。
DOI：
10.1088/0031-9155/35/11/010
复制
发表时间：
1990
影响因子：
3.5
通讯作者：
Huq,MS
中科院分区：
文献类型：
--
作者：
Schulz,RJ;Venkataramanan,N;Huq,MS
用2微米镍箔(平均传输能量=550keV)散射800keV质子，测定了以铝为参照物的A-150塑料和石墨的热缺陷。采用Al/A-150、石墨/A-150和Al/石墨的复合芯材，可从一侧或另一侧进行辐照。用安装在惠斯通电桥相对支腿上的两个热敏电阻测量了30-100nA S辐照(3-6nA的质子束流)引起的堆芯温升。A-150塑料的热缺陷被确定为铝的0.0421+或-0.0036(SE)和石墨的0.0402+或-0.0034。以铝为基准的石墨的热缺陷为0.0043+或-0.0034。累积剂量达8×105Gy时，A-150塑料的热缺陷无明显变化。
The thermal defects of A-150 plastic and graphite referenced to aluminium were determined for 800 keV protons scattered by a 2 mu m nickel foil (mean transmitted energy= 550 keV). Composite cores of Al/A-150, graphite/A-150 and Al/graphite which could be irradiated from one side or the other were employed. The temperature increase of a core caused by 30-100 s of irradiation (3-6 nA of proton beam current) was detected by two thermistors mounted in opposite legs of a Wheatstone bridge. The thermal defect of A-150 plastic was determined to be 0.0421+ or-0.0036 (SE) referenced to aluminium and 0.0402+ or-0.0034 referenced to graphite. The thermal defect of graphite referenced to aluminium is 0.0043+ or-0.0034. No change in the thermal defect of A-150 plastic was detected for accumulated doses up to 8* 10 5 Gy.