• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Radiocarbon >Estimation of gas purity in a CO2-filled proportional counter by rise-time analysis
【24h】

Estimation of gas purity in a CO2-filled proportional counter by rise-time analysis

机译：通过上升时间分析估算填充二氧化碳的比例计数器中的气体纯度

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Since 1994, a new data-acquisition system with rise-time (RT) based background reduction has been in operation at the Gliwice Radiocarbon Laboratory. During long-term stability tests, we observed large shifts in the RT spectra obtained during various measurement series. These shifts caused important changes in the count rate measured with RT reduction. As a result, we have ascertained that the shifts are the consequence of variable concentration of electronegative impurities. A correction method was considered, using average RT of pulses obtained in coincidence with the muon events, so-called ARTL (average rise time of L pulses), for estimation of the RT of the spectrum's shift. However, radiocarbon dates calculated based on count rates with RT discrimination, which were corrected using this method, are not more precise than traditional C-14 dates. Nevertheless, the value of the average coincidence pulse RT is a good indication of sample gas purity. [References: 4]
机译：自1994年以来，格利维采（Gliwice）放射性碳实验室就开始使用一种新的基于上升时间（RT）的背景数据采集系统。在长期稳定性测试中，我们观察到在各种测量系列中获得的RT光谱有很大变化。这些变化导致RT降低测量计数率发生重要变化。结果，我们已经确定，位移是由于负电性杂质浓度变化的结果。考虑了一种校正方法，该方法使用与μon事件相一致获得的脉冲的平均RT，即所谓的ARTL（L个脉冲的平均上升时间）来估计频谱偏移的RT。但是，使用这种方法校正的，基于具有RT区分度的计数率计算的放射性碳数据日期，并不比传统的C-14日期更精确。然而，平均一致脉冲RT的值很好地表明了样品气体的纯度。 [参考：4]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号