公开(公告)号：US20100102219A1

公开(公告)日：2010-04-29

申请号：US12579719

申请日：2009-10-15

申请人： Hua Peng ,  Qingjun Zhang ,  Jin Lin ,  Yuanjing Li ,  Zhiqiang Chen ,  Shaoji Mao ,  Zhude Dai ,  Shiping Cao ,  Zhongxia Zhang ,  Yangtian Zhang ,  Dexu Lin ,  Qinghua Wang ,  Zhang Qing Jun

发明人： Hua Peng ,  Qingjun Zhang ,  Jin Lin ,  Yuanjing Li ,  Zhiqiang Chen ,  Shaoji Mao ,  Zhude Dai ,  Shiping Cao ,  Zhongxia Zhang ,  Yangtian Zhang ,  Dexu Lin ,  Qinghua Wang ,  Zhang Qing Jun

IPC分类号： H01J49/02 ,  B01D59/44

CPC分类号： H01J3/04 ,  H01J49/004 ,  H01J49/061

摘要： Disclosed is an ion gate for a dual IMS and method. The ion gate includes an ion source, a first gate electrode placed on one side of the ion source, a second gate electrode placed on the other side of the ion source, a third gate electrode placed on the side of the first gate electrode away from the ion source, a fourth gate electrode placed on the side of the second gate electrode away from the ion source, wherein during the ion storage, the potential at the position on the tube axis of the ion gate corresponding to the first gate electrode is different from the potentials at the positions on the tube axis corresponding to the ion source and the third gate electrode, and the potential at the position on the tube axis corresponding to the second gate electrode is different from the potentials at the positions on the tube axis corresponding to the ion source and the fourth gate electrode. According to the present invention, after sample gas enters the ion gates, charge exchange with reaction ions occurs between the first gate electrode and the second electrode, and positive and negative ions are continuously stored into the storage regions for the positive and negative ions. This leads to an improvement of utility rate of ions. Then, the ions are educed in a step-wise manner from the storage regions for the positive and negative ions by a simple control of a combination of the electrodes.

摘要翻译： 公开了一种用于双重IMS和方法的离子门。 离子浇口包括离子源，位于离子源一侧的第一栅电极，位于离子源另一侧的第二栅电极，位于第一栅电极侧的第三栅电极， 离子源，第四栅极放置在远离离子源的第二栅电极侧，其中在离子存储期间，对应于第一栅电极的离子门的管轴上的位置的电位不同 从对应于离子源和第三栅电极的管轴上的位置的电位和对应于第二栅电极的管轴上的位置的电位与管轴对应的位置的电位不同 到离子源和第四栅电极。 根据本发明，在样品气体进入离子浇口之后，在第一栅电极和第二电极之间产生与反应离子的电荷交换，正离子和负离子被连续地存储在正离子和负离子的存储区中。 这导致了离子的利用率的提高。 然后，通过简单地控制电极的组合，从正离子和负离子的存储区域逐步地排出离子。

公开(公告)号：US20090309013A1

公开(公告)日：2009-12-17

申请号：US12455029

申请日：2009-05-27

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： H01J49/00

CPC分类号： G01N27/622

摘要： Disclosed is an electrode structure for a drift tube in IMS comprising a ring electrode, for each of two surfaces of the ring electrode, at least a part adjacent to the inner radius is formed into a cone, and the angles formed between the cones and the axis of the ring electrode are different from each other. The electrode structure of the present invention can alleviate, even eliminate, the accumulation of space charges in the drift tube. Such structure is particularly suitable when the electric field in the drift tube is low in strength or a great number of ions pass through. Meanwhile, the structure allows a significant decrease in the size of the outer radius of the electrode, while the inner radius remains constant. In this way, it is possible to effectively reduce the outline size of the drift tube and thus make the IMS compact.

摘要翻译： 公开了一种用于IMS中的漂移管的电极结构，包括环形电极，对于环形电极的两个表面中的每一个，至少与内半径相邻的部分形成为锥体，并且在锥体和 环电极的轴线彼此不同。 本发明的电极结构可以减轻甚至消除漂移管中空间电荷的累积。 当漂移管中的电场强度低或大量离子通过时，这种结构特别合适。 同时，结构允许电极的外半径的大小显着减小，而内半径保持恒定。 以这种方式，可以有效地减小漂移管的轮廓尺寸，从而使得IMS紧凑。

公开(公告)号：US08217365B2

公开(公告)日：2012-07-10

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： H01J27/20 ,  H01J49/14

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。