公开(公告)号：US20090166539A1

公开(公告)日：2009-07-02

申请号：US12342592

申请日：2008-12-23

申请人： Ming RUAN ,  Yingrong JIAN ,  Kun ZHAO ,  Yali XIE ,  Jin LIN

发明人： Ming RUAN ,  Yingrong JIAN ,  Kun ZHAO ,  Yali XIE ,  Jin LIN

IPC分类号： G01T1/20 ,  G01D18/00

CPC分类号： G01T1/362 ,  G01T1/40

摘要： The invention provides a multichannel analyzer for use in a multichannel spectrometer, which comprises a standard spectrum calibrator for obtaining energy calibration parameters of said multichannel spectrometer; an environment background spectrum calibrator for obtaining parameters of a current and a previous environment background spectrum; a peak shift detector for analyzing the parameters of the current and previous environment background spectrum to determine whether a peak shift occurs between them and to determine a correction coefficient of the peak shift; and a parameter corrector for correcting the energy calibration parameters of said multichannel spectrometer using said peak shift correction coefficient. The invention also provides a method for correcting a peak shift of a multichannel spectrometer adapted in the multichannel analyzer. The method for correcting and the multichannel analyzer can correct and monitor the peak shift of the multichannel spectrometer in real time.

摘要翻译： 本发明提供一种用于多通道光谱仪的多通道分析仪，其包括用于获得所述多通道光谱仪的能量校准参数的标准光谱校准器; 环境背景光谱校准器，用于获得当前和先前环境背景光谱的参数; 峰值移位检测器，用于分析当前和以前的环境背景谱的参数，以确定它们之间是否发生峰值偏移，并确定峰值偏移的校正系数; 以及参数校正器，用于使用所述峰值偏移校正系数校正所述多通道光谱仪的能量校准参数。 本发明还提供了一种校正适用于多通道分析仪的多通道光谱仪的峰值偏移的方法。 校正方法和多通道分析仪可以实时校正和监测多通道光谱仪的峰值偏移。

公开(公告)号：US20090166542A1

公开(公告)日：2009-07-02

申请号：US12340966

申请日：2008-12-22

申请人： Ming RUAN ,  Yingrong JIAN ,  Kun ZHAO ,  Jin LIN

发明人： Ming RUAN ,  Yingrong JIAN ,  Kun ZHAO ,  Jin LIN

IPC分类号： G01T1/20

CPC分类号： G01T1/362

摘要： A data processing device for processing a reference background spectrum and a measurement spectrum of a radioactive material represented by a multichannel spectrum to acquire energy region information of detected gamma rays is provided, said data processing device comprising: energy region dividing means for degenerating said multichannel spectrum into a degenerated spectrum of limited channels, each degenerated spectrum representing an energy region; degenerated spectrum calculating means for calculating a background degenerated spectrum and measurement degenerated spectrum based on said background spectrum and said measurement spectrum corresponding to said degenerated spectrum of limited channels respectively; energy ratio calculating means for calculating a energy ratio based on the calculated background degenerated spectrum and measurement degenerated spectrum; peak-detection means, for searching a peak value in the calculated energy ratios; energy region determining means for determining a corresponding energy region of said gamma rays based on the searched peak value in the energy ratios. A corresponding radiation detection method and a radiation detection system employing the data processing device are also provided.

摘要翻译： 一种数据处理装置，用于处理参考背景光谱和由多通道光谱表示的放射性物质的测量光谱，以获取检测到的伽马射线的能量区域信息，所述数据处理装置包括：能量区域划分装置，用于简化所述多通道光谱 变成有限通道的退化光谱，每个退化光谱表示能量区域; 退化频谱计算装置，用于分别基于所述背景谱和与所述限制信道的所述简并谱相对应的所述测量谱计算背景退化谱和测量退化谱; 能量比计算装置，用于基于所计算的背景退化光谱和测量退化光谱计算能量比; 峰值检测装置，用于搜索所计算的能量比的峰值; 能量区域确定装置，用于基于所搜索的能量比的峰值来确定所述伽马射线的相应能量区域。 还提供了相应的辐射检测方法和采用该数据处理装置的放射线检测系统。

公开(公告)号：US20090283694A1

公开(公告)日：2009-11-19

申请号：US12437044

申请日：2009-05-07

申请人： Zhiqiang CHEN ,  Yuanjing LI ,  Hua PENG ,  Qingjun ZHANG ,  Jin LIN ,  Shaoji MAO ,  Zhude DAI ,  Shiping CAO ,  Zhongxia ZHANG ,  Yangtian ZHANG ,  Dexu LIN ,  Qinghua WANG ,  Shaofeng WANG ,  Hui LI

发明人： Zhiqiang CHEN ,  Yuanjing LI ,  Hua PENG ,  Qingjun ZHANG ,  Jin LIN ,  Shaoji MAO ,  Zhude DAI ,  Shiping CAO ,  Zhongxia ZHANG ,  Yangtian ZHANG ,  Dexu LIN ,  Qinghua WANG ,  Shaofeng WANG ,  Hui LI

IPC分类号： H01J27/00 ,  H01J49/00 ,  G21G4/00

CPC分类号： H01J49/14 ,  H01J27/20

摘要： Disclosed is an ion source comprising a plate-shaped source body which has radioactivity on its both sides and allows positive and negative ions to penetrate through the source body. The present invention gives beneficial effects. First, the ion source structure can improve the ionization efficiency of sample molecules, and the generated sample ions have a centralized distribution within a flat space on both sides of the source body. Such distribution of ion cloud facilitates to improve the IMS sensitivity. Meanwhile, the source body of the present invention has a transmittance in itself. Thus, positive and negative ions generated on both sides of the source body can penetrate through the source body and be separated to the both sides of the source body. In this way, it is possible to improve the utilization efficiency of ions.

摘要翻译： 公开了一种离子源，其包括在其两侧具有放射性并允许正离子和负离子穿过源体的板状源体。 本发明具有有益效果。 首先，离子源结构可以提高样品分子的电离效率，并且所产生的样品离子在源体的两侧的平坦空间内具有集中分布。 这种离子云的分布有助于提高IMS灵敏度。 同时，本发明的源体本身具有透光性。 因此，源体两侧产生的正离子和负离子可以穿透源体并分离到源体的两侧。 以这种方式，可以提高离子的利用效率。