Aging of proportional counters with gas mixtures containing impurities of aromatic hydrocarbons
Aging of proportional counters with gas mixtures containing impurities of aromatic hydrocarbons
复制标题
正比计数器与含有芳香烃杂质的气体混合物的老化
DOI：
10.1109/nssmic.2004.1462667
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
O. Vilhu
中科院分区：
文献类型：
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作者：
H. Andersson;T. Andersson;J. Heino;J. Huovelin;K. Kurvinern;R. Lauhakangas;S. Nenonen;A. Numminen;J. Ojala;R. Orava;J. Schultz;H. Sipila;O. Vilhu
系统研究了一些芳香烃和其他一些具有环状分子结构的溶剂的老化特性。研究的浓度范围从几 ppm 到几百 ppm。还测试了含有和不含碳氢化合物的气体混合物，以确定碳氢化合物是否有助于等离子体聚合过程。十二个单线正比计数器阵列用于加速老化测试，所有计数器都从 X 射线设备接收大致相同的辐射剂量。老化率被测量为所研究化合物浓度的函数。结果表明，老化速率与所研究的芳烃浓度成正比，并且有机淬灭组分通过提高老化速率来参与该过程。还研究了一些建筑材料的除气情况。使用热解吸管对材料中释放的有机化合物进行取样，并使用 GC/MS 分析仪进行分析。该方法还用于分析由于添加芳香烃而在正比计数器中产生的化合物。
The aging characteristics of some aromatic hydrocarbons and some other solvents with a ring like molecule structure are systematically studied. The concentrations ranging from a few ppm to several hundred ppm were investigated. Gas mixtures with and without hydrocarbons were tested as well, to find out whether the hydrocarbons contribute to the plasma polymerisation process. An array of twelve single-wire proportional counters, all receiving roughly the same irradiation dose from an X-ray device, was used for the accelerated aging tests. The aging rates were measured as a function of the concentration of the compounds under study. The results indicated that rate of aging is proportional to the concentration of aromatic hydrocarbons studied, and that the organic quenching component is taking part to the process by enhancing the aging rate. Outgassing of some construction materials was investigated as well. A thermal desorption tube was used for sampling the organic compounds released from the materials and a GC/MS analyser was used for the analysis. The method was utilised also for analysing the compounds created in the proportional counter due to the addition of the aromatic hydrocarbons.