一种对样品进行识别与解析的方法及离子迁移谱仪

一种对样品进行识别与解析的方法，将样品同时并行通过光离子化电离VUV、放射性63Ni电离、尖端放电电离和电喷雾电离四种方式中的任意两种或三种方式组合进行电离；之后再同时进行正负离子模式检测，得到正负离子信号谱图，得到的离子信号用微电流放大器分别放大后，进入多通道数据采集卡采集，通过计算机对数据进行分析得到待测样品的种类和浓度。本发明的优点：根据离子迁移谱不同电离源和不同检测模式下测量化合物种类的不同，实现拓宽离子迁移谱测量的化合物种类，同时根据谱图本身的特征和谱图之间的差异，来分析识别样品，从而实现提高离子迁移谱对样品分析识别能力，同时又能保持离子迁移谱仪小型、便携的优点。带填

离子迁移谱的智能识别法及应用于易制毒化学品稽查

重点介绍一台自主研制、用于易制毒化学品现场稽查的真空紫外灯电离一离子迁移谱仪，以及为这台仪器开发的一套数据处理和智能识别软件。数据处理包括数据采集、傅立叶变换和小波变换降噪等。智能识别方面建立了一套利用迁移时间匹配、夹角余弦和命中率指数3个参数作为综合评价指数，智能分析图谱的识别方法。该系统在对常见的易制毒化学品的检测中，识别率达到90％

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies