公开(公告)号：US07910896B2

公开(公告)日：2011-03-22

申请号：US12179969

申请日：2008-07-25

申请人： Terry M. Marta ,  Fouad Nusseibeh ,  Adam Dewey McBrady ,  Michael Rhodes

发明人： Terry M. Marta ,  Fouad Nusseibeh ,  Adam Dewey McBrady ,  Michael Rhodes

IPC分类号： H01J27/02

CPC分类号： H01J27/16

摘要： A micro discharge device (MDD) ionizer and a method for fabricating the MDD ionizer are disclosed. The MDD ionizer includes a dielectric barrier having a first open end connected to an electrically conductive capillary tube and a second open end connected to a sample collection capillary tube. A circular high voltage electrode can be positioned around the dielectric barrier in close linear proximity to the conductive capillary tube and sealed by a non-conductive epoxy. A plasma discharge can be formed in a flow path through the dielectric barrier when an AC potential is applied between the high voltage electrode and the electrically conductive capillary tube utilizing an electronic controller. Such a plasma discharge in the flow path of the sample achieves soft ionization of gaseous sample molecules. The high pressure region generally occurs in the plasma region (where the ionization occurs). The ions thus are drawn (i.e., pushed or pulled) toward the high vacuum region located downstream where the detector(s) can be located.

摘要翻译： 公开了一种微型放电装置（MDD）电离器及其制造方法。 MDD电离器包括电介质阻挡层，其具有连接到导电毛细管的第一开口端和连接到样品收集毛细管的第二开口端。 可以将环形高压电极定位在电介质阻挡层周围，紧密接近导电毛细管并被非导电环氧树脂密封。 当使用电子控制器在高压电极和导电毛细管之间施加AC电位时，可以在通过电介质阻挡层的流动路径中形成等离子体放电。 在样品的流动路径中的这种等离子体放电实现了气态样品分子的软电离。 高压区域通常发生在等离子体区域（其中发生电离）。 离子因此被拉向（即被推或拉）到位于检测器可位于下游的高真空区域。

公开(公告)号：US08196449B2

公开(公告)日：2012-06-12

申请号：US12262020

申请日：2008-10-30

申请人： Adam Dewey McBrady ,  Fouad Nusseibeh ,  Terry M. Marta ,  Robert Higashi

发明人： Adam Dewey McBrady ,  Fouad Nusseibeh ,  Terry M. Marta ,  Robert Higashi

IPC分类号： G01N30/62

CPC分类号： G01N30/64 ,  G01N30/74 ,  G01N2030/642 ,  G01N30/6095

摘要： A micro discharge device (MDD) capable of low voltage discharges in a variety of carrier gases for detection and/or ionization includes a sample introduction capillary having a first open end connected to a gas system and a second open end connected to a cylinder comprising a high dielectric constant material. A high voltage electrode can be placed in close proximity to the outer diameter of the cylinder and at a close linear distance to the second open end of the sample introduction capillary. A region can be formed inside the cylinder between the second end of the sample introduction capillary and the high voltage electrode wherein discharge can be located. An optical emission collector can be located through the flow manifold to a receiving location near the high voltage electrode within a region from inside the cylinder between the high voltage electrode and the manifold.

摘要翻译： 能够在用于检测和/或电离的各种载气中进行低电压放电的微放电装置（MDD）包括：样品导入毛细管，其具有连接到气体系统的第一开口端和连接到气缸的第二开口端， 高介电常数材料。 高压电极可以靠近气缸的外径并且与样品导入毛细管的第二开口端紧密的线性距离放置。 可以在气体中形成区域，该区域在样品引入用毛细管的第二端和可以放置放电的高压电极之间。 光发射集电器可以在从高压电极和歧管之间的气缸内部的区域内通过流量歧管定位到靠近高压电极的接收位置。

公开(公告)号：US20100045159A1

公开(公告)日：2010-02-25

申请号：US12262020

申请日：2008-10-30

申请人： Adam Dewey McBrady ,  Fouad Nusseibeh ,  Terry M. Marta ,  Robert Higashi

发明人： Adam Dewey McBrady ,  Fouad Nusseibeh ,  Terry M. Marta ,  Robert Higashi

IPC分类号： H01J1/00

CPC分类号： G01N30/64 ,  G01N30/74 ,  G01N2030/642 ,  G01N30/6095

摘要： A micro discharge device (MDD) capable of low voltage discharges in a variety of carrier gases for detection and/or ionization includes a sample introduction capillary having a first open end connected to a gas system and a second open end connected to a cylinder comprising a high dielectric constant material. A high voltage electrode can be placed in close proximity to the outer diameter of the cylinder and at a close linear distance to the second open end of the sample introduction capillary. A region can be formed inside the cylinder between the second end of the sample introduction capillary and the high voltage electrode wherein discharge can be located. An optical emission collector can be located through the flow manifold to a receiving location near the high voltage electrode within a region from inside the cylinder between the high voltage electrode and the manifold.

摘要翻译： 能够在用于检测和/或电离的各种载气中进行低电压放电的微放电装置（MDD）包括：样品导入毛细管，其具有连接到气体系统的第一开口端和连接到气缸的第二开口端， 高介电常数材料。 高压电极可以靠近气缸的外径并且与样品导入毛细管的第二开口端紧密的线性距离放置。 可以在气体中形成区域，该区域在样品引入用毛细管的第二端和可以放置放电的高压电极之间。 光发射集电器可以在从高压电极和歧管之间的气缸内部的区域内通过流量歧管定位到靠近高压电极的接收位置。

公开(公告)号：US20100019139A1

公开(公告)日：2010-01-28

申请号：US12179969

申请日：2008-07-25

申请人： Terry M. Marta ,  Fouad Nusseibeh ,  Adam Dewey McBrady ,  Michael Rhodes

发明人： Terry M. Marta ,  Fouad Nusseibeh ,  Adam Dewey McBrady ,  Michael Rhodes

IPC分类号： H01J49/00

CPC分类号： H01J27/16

摘要： A micro discharge device (MDD) ionizer and a method for fabricating the MDD ionizer are disclosed. The MDD ionizer includes a dielectric barrier having a first open end connected to an electrically conductive capillary tube and a second open end connected to a sample collection capillary tube. A circular high voltage electrode can be positioned around the dielectric barrier in close linear proximity to the conductive capillary tube and sealed by a non-conductive epoxy. A plasma discharge can be formed in a flow path through the dielectric barrier when an AC potential is applied between the high voltage electrode and the electrically conductive capillary tube utilizing an electronic controller. Such a plasma discharge in the flow path of the sample achieves soft ionization of gaseous sample molecules. The high pressure region generally occurs in the plasma region (where the ionization occurs). The ions thus are drawn (i.e., pushed or pulled) toward the high vacuum region located downstream where the detector(s) can be located.

摘要翻译： 公开了一种微型放电装置（MDD）电离器及其制造方法。 MDD电离器包括电介质阻挡层，其具有连接到导电毛细管的第一开口端和连接到样品收集毛细管的第二开口端。 可以将环形高压电极定位在电介质阻挡层周围，紧密接近导电毛细管并被非导电环氧树脂密封。 当使用电子控制器在高压电极和导电毛细管之间施加AC电位时，可以在通过电介质阻挡层的流动路径中形成等离子体放电。 在样品的流动路径中的这种等离子体放电实现了气态样品分子的软电离。 高压区域通常发生在等离子体区域（其中发生电离）。 离子因此被拉向（即被推或拉）到位于检测器可位于下游的高真空区域。