公开(公告)号：US06707034B1

公开(公告)日：2004-03-16

申请号：US10230349

申请日：2002-08-29

申请人： Haruhisa Yamaguchi ,  Makoto Nakamura ,  Takehisa Okamoto ,  Hiroshi Suzuki ,  Takayuki Ohmura

发明人： Haruhisa Yamaguchi ,  Makoto Nakamura ,  Takehisa Okamoto ,  Hiroshi Suzuki ,  Takayuki Ohmura

IPC分类号： H01J4926

CPC分类号： H01J49/025

摘要： An ion detector includes an ion input face, a Faraday cup, an ion-to-electron converter dynode, two ion deflection electrodes, an electron multiplier portion, and an anode. The ion input face is formed with an ion input opening. The Faraday cup has an ion collection surface that confronts the ion input opening. The ion-to-electron converter dynode is disposed to one side with respect to the Faraday cup and the ion input opening and has a conversion surface that converts impinging ions into electrons. The two ion deflection electrodes generate an electron lens that attracts and focuses ions from the ion input opening toward the conversion surface of the ion-to-electron converter dynode. The electron multiplier portion receives and multiplies the electrons from the ion-to-electron converter dynode, and includes a plurality of dynodes that multiply electrons one after the other. The plurality of dynodes are juxtaposed in an arc-shape around the Faraday cup. The anode receives electrons from the electron multiplier portion and outputs a signal that corresponds to the amount of input ions.

摘要翻译： 离子检测器包括离子输入面，法拉第杯，离子到电子转换器倍增极，两个离子偏转电极，电子倍增器部分和阳极。 离子输入面由离子输入口形成。 法拉第杯具有面对离子输入口的离子收集表面。 离子 - 电子转换器倍增电极相对于法拉第杯和离子输入开口设置在一侧，并且具有将入射离子转化为电子的转换表面。 两个离子偏转电极产生电子透镜，其吸引并聚焦离子从离子输入开口朝向离子到电子转换器倍增极的转换表面。 电子倍增器部分接收和乘以离子到电子转换器倍增电极的电子，并且包括一个接一个地乘以电子的多个倍增电极。 多个倍增电极以法拉第杯周围的弧形并列。 阳极从电子倍增器部分接收电子，并输出与输入离子量对应的信号。

公开(公告)号：US08013294B2

公开(公告)日：2011-09-06

申请号：US12607410

申请日：2009-10-28

申请人： Motohiro Suyama ,  Takayuki Ohmura ,  Hiroshi Kobayashi

发明人： Motohiro Suyama ,  Takayuki Ohmura ,  Hiroshi Kobayashi

IPC分类号： H01J49/40 ,  H01J43/00

CPC分类号： H01J43/246 ,  H01J43/22

摘要： This ion detector includes an MCP and a plurality of planar dynodes respectively having a plurality of slits. The plurality of planar dynodes are stacked via spacers parallel to an electron output plane of the MCP, and the first stage planar dynode is opposed parallel to the electron output plane. In accordance with this ion detector, it is possible to obtain output signals having the linearity reaching mV order, and to shorten its pulse width to approximately 600 ps.

公开(公告)号：US20080088232A1

公开(公告)日：2008-04-17

申请号：US11594234

申请日：2006-11-08

申请人： Takayuki Ohmura ,  Teruhiko Yamaguchi

发明人： Takayuki Ohmura ,  Teruhiko Yamaguchi

IPC分类号： H01J43/18

CPC分类号： H01J43/26 ,  H01J43/20 ,  H01J43/28

摘要： The present invention relates to a photomultiplier that realizes significant improvement of response time properties with a structure enabling mass production. In the sealed container, a photocathode, a dynode unit including at least one dynode set, and preferably dynode sets of two series, a focusing electrode unit arranged between the photocathode and the dynode unit are housed. The focusing electrode unit is set to the same potential as the second dynode arranged at a position where secondary electrons from said first dynode, which emits secondary electrons in response to incidence of photoelectrons, arrive, and is provided with partitioning plates partitioning the second dynode into two in a longitudinal direction of the second dynode.

摘要翻译： 光电倍增管技术领域本发明涉及一种光电倍增管，其可实现响应时间特性的显着改善，并能实现批量生产。 在密封容器中，容纳有光电阴极，包括至少一个倍增电极组的倍增电极单元，优选两个串联的倍增电极组，布置在光电阴极和倍增极单元之间的聚焦电极单元。 聚焦电极单元被设置为与布置在响应于光电子的入射发射二次电子的来自所述第一倍增电极的二次电子到达的位置处的第二倍增电极相同的电位，并且设置有将第二倍增电极分隔成的分隔板 两个在第二倍增电极的纵向方向上。

公开(公告)号：US20080087831A1

公开(公告)日：2008-04-17

申请号：US11594244

申请日：2006-11-08

申请人： Takayuki Ohmura ,  Suenori Kimura ,  Masuo Ito ,  Teruhiko Yamaguchi

发明人： Takayuki Ohmura ,  Suenori Kimura ,  Masuo Ito ,  Teruhiko Yamaguchi

IPC分类号： H01J43/00

CPC分类号： H01J43/28

摘要： The present invention relates to a photomultiplier that realizes significant improvement of response time properties with a structure enabling mass production. The photomultiplier comprises a sealed container, and the sealed container includes a hollow body section, extending along a tube axis, and a faceplate. The faceplate has a light incidence surface and a light emission surface on which a photocathode is formed. In particular, the light emission surface is constituted by a flat region, and a curved-surface processed region that is positioned at a periphery of the flat region and that includes edges of the light emission surface. A surface shape of the peripheral region of the light emission surface of the faceplate is thus intentionally changed in order to adjust the angles of emission of photoelectrons from the photocathode positioned at the peripheral region. Thus, the spread of transit times of photoelectrons propagating from the photocathode to a first dynode is thus reduced effectively and made not to depend on the emission positions of the photoelectrons.

摘要翻译： 光电倍增管技术领域本发明涉及一种光电倍增管，其可实现响应时间特性的显着改善，并能实现批量生产。 光电倍增管包括密封容器，密封容器包括沿管轴延伸的中空主体部分和面板。 面板具有光入射面和形成有光电阴极的发光面。 特别地，光发射表面由平坦区域和位于平坦区域的周边并且包括发光表面的边缘的曲面处理区域构成。 因此，为了调整位于周边区域的光电面的光电子的发射角度，有意地改变面板的发光面的周边区域的表面形状。 因此，有效地降低了从光电阴极传播到第一倍增电极的光电子的传输时间的扩散，并且不依赖于光电子的发射位置。

公开(公告)号：US20070241677A1

公开(公告)日：2007-10-18

申请号：US11783907

申请日：2007-04-13

申请人： Takayuki Ohmura ,  Teruhiko Yamaguchi

发明人： Takayuki Ohmura ,  Teruhiko Yamaguchi

IPC分类号： H01J43/18 ,  H01J43/04 ,  H01J43/00

CPC分类号： H01J43/18

摘要： The present invention relates to a photomultiplier having a configuration for improving response time characteristics. The photomultiplier comprises at least a sealed container, a photocathode, and an electron multiplier section. The electron multiplier section has an upper unit and a lower unit. The upper unit includes a focusing electrode, a mesh electrode, and a first dynode. The lower unit includes the subsequent dynodes excluding the first dynode and a pair of insulating supporting members. The length in the longitudinal direction of the first dynode is made greater than the interval between the pair of insulating supporting members. By this configuration, the sizes of the effective regions of the assigned electron multiplier channels can be set arbitrarily without being restricted by the pair of insulating supporting members.

摘要翻译： 本发明涉及具有改善响应时间特性的结构的光电倍增管。 光电倍增管至少包括密封容器，光电阴极和电子倍增器部分。 电子倍增器部分具有上部单元和下部单元。 上部单元包括聚焦电极，网状电极和第一倍增极。 下部单元包括除了第一倍增电极之外的后续倍增电极和一对绝缘支撑构件。 第一倍增极的长度方向的长度大于绝缘支撑构件对之间的间隔。 通过这种构造，可以任意设定分配的电子倍增器通道的有效区域的尺寸，而不受一对绝缘支撑构件的限制。

公开(公告)号：US20090045741A1

公开(公告)日：2009-02-19

申请号：US11921959

申请日：2006-06-01

申请人： Hiroyuki Kyushima ,  Hideki Shimoi ,  Hiroyuki Sugiyama ,  Hitoshi Kishita ,  Suenori Kimura ,  Yuji Masuda ,  Takayuki Ohmura

发明人： Hiroyuki Kyushima ,  Hideki Shimoi ,  Hiroyuki Sugiyama ,  Hitoshi Kishita ,  Suenori Kimura ,  Yuji Masuda ,  Takayuki Ohmura

IPC分类号： H01J43/04

CPC分类号： H01J43/24

摘要： The present invention relates to a photomultiplier having a fine structure capable of realizing high detection accuracy by effectively suppressing cross talk among electron-multiplier channels. The photomultiplier comprises a housing whose inside is maintained vacuum, and, in the housing, a photocathode, an electron-multiplier section, and anodes are disposed. The electron-multiplier section has groove portions for cascade-multiplying photoelectrons as electron-multiplier channels, and the anodes are constituted by channel electrodes corresponding to the groove portions respectively defined by wall parts. In particular, at least parts of the respective channel electrodes are located in spaces sandwiched between pairs of wall parts defining the corresponding groove portions.

摘要翻译： 本发明涉及具有能够通过有效地抑制电子倍增器通道之间的串扰来实现高检测精度的精细结构的光电倍增管。 光电倍增管包括其内部保持真空的壳体，并且在壳体中设置光电阴极，电子倍增器部分和阳极。 电子倍增器部分具有用于级联倍增光电子作为电子倍增器通道的槽部分，并且阳极由对应于分别由壁部分限定的槽部分的沟道电极构成。 特别地，各通道电极的至少一部分位于夹在形成相应凹槽部分的一对壁部分之间的空间中。

公开(公告)号：US07449834B2

公开(公告)日：2008-11-11

申请号：US11594235

申请日：2006-11-08

申请人： Takayuki Ohmura ,  Suenori Kimura

发明人： Takayuki Ohmura ,  Suenori Kimura

IPC分类号： H01J43/18 ,  H01J43/04

CPC分类号： H01J43/26

摘要： The present invention relates to a photomultiplier that realizes significant improvement of response time properties with a structure enabling mass production. The photomultiplier comprises an electron multiplier section for cascade-multiplying photoelectrons emitted from said photocathode. The electron multiplier has a structure holding at least two dynode sets while sandwiching the tube axis of a sealed container in this the electron multiplier is housed. In particular, the first dynodes respectively belonging to the two dynode sets are arranged such that their back surfaces opposing respective secondary electron emitting surfaces face each other while sandwiching the tube axis. In this arrangement, because each first dynode itself is positioned near the tube axis, the efficiency of collection of photoelectrons arriving at the periphery of the first dynode is improved significantly.

摘要翻译： 光电倍增管技术领域本发明涉及一种光电倍增管，其可实现响应时间特性的显着改善，并能实现批量生产。 光电倍增管包括用于使从所述光电阴极发射的光电子级联的电子倍增器部分。 电子倍增器具有保持至少两个倍增电极组的结构，同时夹着密封容器的管轴，容纳电子倍增器。 特别地，分别属于两个倍增电极组的第一倍增极被布置成使得它们与相应的二次电子发射表面相对的背面彼此面对，同时夹着管轴。 在这种布置中，由于每个第一倍增电极本身位于管轴附近，所以到达第一倍增极周边的光电子的收集效率显着提高。

公开(公告)号：US07427835B2

公开(公告)日：2008-09-23

申请号：US11294535

申请日：2005-12-06

申请人： Takayuki Ohmura ,  Suenori Kimura ,  Masuo Ito

发明人： Takayuki Ohmura ,  Suenori Kimura ,  Masuo Ito

IPC分类号： H01J43/18

CPC分类号： H01J43/06

摘要： The present invention relates to a photomultiplier having a structure that enables to perform high gain and satisfy higher required characteristics. In the photomultiplier, an electron-multiplying unit accommodated in a sealed container comprises a focusing electrode, an accelerating electrode, a dynode unit, and an anode. Particularly, at least the accelerating electrode and dynode unit are held unitedly in a state that at least a first-stage dynode and a second-stage included in the dynode unit are opposite directly to the accelerating electrode not through a conductive material. A conventional metal disk for supporting directly dynodes which are set to the same potential as that of the first-stage dynode is not placed between the accelerating electrode and dynode unit; thus, variations of the transit time of electrons may be drastically reduced while the electrons reach from the cathode to the second-stage dynode via the first-stage dynode.

摘要翻译： 本发明涉及具有能够实现高增益并满足更高要求特性的结构的光电倍增管。 在光电倍增器中，容纳在密封容器中的电子倍增单元包括聚焦电极，加速电极，倍增电极单元和阳极。 特别地，加速电极和倍增电极单元至少保持在至少第一级倍增电极和包括在倍增极单元中的第二级不是通过导电材料与加速电极直接相对的状态。 在加速电极和倍增电极单元之间没有设置用于直接设置与第一级倍增电极相同电位的倍增电极的金属盘; 因此，电子的通过时间的变化可以大大降低，同时电子经由第一级倍增极从阴极到达第二级倍增极。

公开(公告)号：US20080061690A1

公开(公告)日：2008-03-13

申请号：US10585355

申请日：2004-12-24

申请人： Takayuki Ohmura ,  Suenori Kimura ,  Masuo Ito

发明人： Takayuki Ohmura ,  Suenori Kimura ,  Masuo Ito

IPC分类号： H01J43/18

CPC分类号： H01J43/08

摘要： Therefore, use of the electron lens forming electrodes 115 and 117 flattens the potential distribution in the longitudinal direction of the first dynode 107a in front of the first dynode 107a, that is, between the dynodes 107a and 107b. As a result, both photoelectrons emitted from the peripheral edge of the cathode 3 and photoelectrons emitted from the center region of the cathode 3 travel substantially in a straight line from the first dynode 107a after being multiplied thereby to impinge on the second dynode 107b. Since this structure reduces deviation in the transit distance of photoelectrons based on the irradiated position of light on the cathode 3, the structure also reduces the cathode transit time difference (CTTD) according to the irradiated position of light and a transit time spread (TTS) when light is irradiated on the entire surface. In particular, since the transit distance between the dynodes 107a and 107b is greater than that between other dynodes, the CTTD and TTS can be effectively reduced by providing the electron lens forming electrodes 115 and 117.

摘要翻译： 因此，使用电子透镜形成电极115和117使第一倍增电极107a前面的第一倍增电极107a的长度方向上的电位分布平坦化，即在倍增电极107a和107b之间。 结果，从阴极3的周缘发射的光电子和从阴极3的中心区域发射的光电子从乘法后的第一倍增电极107a基本上以直线行进，从而撞击在第二倍增电极107b上 。 由于该结构基于阴极3上的照射位置减少光电子的传送距离的偏差，所以结构还根据光的照射位置和通过时间扩展（TTS）减小阴极通过时间差（CTTD） 当光照射在整个表面上时。 特别地，由于倍增电极107a和107b之间的传输距离大于其他倍增电极之间的传输距离，所以可以通过提供电子透镜形成电极115和117来有效地减小CTTD和TTS。

公开(公告)号：US07990064B2

公开(公告)日：2011-08-02

申请号：US11594234

申请日：2006-11-08

申请人： Takayuki Ohmura ,  Teruhiko Yamaguchi

发明人： Takayuki Ohmura ,  Teruhiko Yamaguchi

IPC分类号： H01J43/20

CPC分类号： H01J43/26 ,  H01J43/20 ,  H01J43/28

摘要： The present invention relates to a photomultiplier that realizes significant improvement of response time properties with a structure enabling mass production. In the sealed container, a photocathode, a dynode unit including at least one dynode set, and preferably dynode sets of two series, a focusing electrode unit arranged between the photocathode and the dynode unit are housed. The focusing electrode unit is set to the same potential as the second dynode arranged at a position where secondary electrons from said first dynode, which emits secondary electrons in response to incidence of photoelectrons, arrive, and is provided with partitioning plates partitioning the second dynode into two in a longitudinal direction of the second dynode.

摘要翻译： 光电倍增管技术领域本发明涉及一种光电倍增管，其可实现响应时间特性的显着改善，并能实现批量生产。 在密封容器中，容纳有光电阴极，包括至少一个倍增电极组的倍增电极单元，优选两个串联的倍增电极组，布置在光电阴极和倍增极单元之间的聚焦电极单元。 聚焦电极单元被设置为与布置在响应于光电子的入射发射二次电子的来自所述第一倍增电极的二次电子到达的位置处的第二倍增电极相同的电位，并且设置有将第二倍增电极分隔成的分隔板 两个在第二倍增电极的纵向方向上。