公开(公告)号：US4376246A

公开(公告)日：1983-03-08

申请号：US227342

申请日：1981-01-22

Applicant: Gilbert N. Butterwick

Inventor： Gilbert N. Butterwick

IPC: H01J43/06 ,  H01J39/00

CPC classification number: H01J43/06

Abstract: An improved photomultiplier tube comprises an evacuated envelope having a faceplate extending across one end thereof. A photoemissive cathode is disposed on the interior surface of the faceplate. A support electrode having a centrally located aperture therethrough is spaced from the faceplate. An electron multiplier assembly is attached to the support electrode. A focusing assembly is disposed about the centrally located aperture in the support electrode on a side of the support electrode opposite the electron multiplier assembly. The focusing electrode assembly comprises an insulating member having a generally tubular body with an interior surface and an exterior surface and having a proximal end and a distal end. A top-cap, having a substantially U-shaped cross-section including a flat central base and two mutually parallel projections at the ends of the base, is attached to the distal end of the insulating member. The parallel projections are directed toward the support electrode and extend along at least a portion of the interior and exterior surfaces of the insulating member. At least one antimony evaporator for forming the photocathode is disposed adjacent to the focusing assembly. One of the projections at the end of the top-cap shields the exterior surface of the insulating member from antimony deposition and thus prevents electrical shorting of the focusing assembly to the support electrode. The other projection shields the interior of the insulating member from impingement by photoelectrons from the photocathode and thereby prevents electrical charging of the insulating member. A focus potential is applied to the top-cap of the focusing electrode assembly to focus the photoelectrons into the electron multiplier assembly.

Abstract translation: 改进的光电倍增管包括具有延伸穿过其一端的面板的抽真空的外壳。 一个光发射阴极设置在面板的内表面上。 具有穿过其中心定位的孔的支撑电极与面板间隔开。 电子倍增器组件附接到支撑电极。 聚焦组件围绕支撑电极的中心定位的孔布置在与电子倍增器组件相对的支撑电极的一侧上。 聚焦电极组件包括绝缘构件，绝缘构件具有大体上具有内表面和外表面并具有近端和远端的管状体。 具有基本上U形横截面的顶盖附接到绝缘构件的远端，所述顶盖包括平坦的中心基部和在基部的端部处的两个相互平行的突起。 平行的突起指向支撑电极并且沿着绝缘构件的内表面和外表面的至少一部分延伸。 用于形成光电阴极的至少一个锑蒸发器邻近聚焦组件设置。 在顶盖末端的一个突出部分将绝缘部件的外表面与锑沉积屏蔽，从而防止聚焦组件电气短路到支撑电极。 另一个突起屏蔽绝缘构件的内部不受来自光电阴极的光电子的撞击，从而防止绝缘构件的充电。 将焦点电位施加到聚焦电极组件的顶帽以将光电子聚焦到电子倍增器组件中。

公开(公告)号：US3622827A

公开(公告)日：1971-11-23

申请号：US3622827D

申请日：1969-10-21

Applicant: BENDIX CORP

Inventor： SHRINER WILLAIM H

IPC: H01J43/06 ,  H01J49/02 ,  H01J43/16 ,  B01D59/44 ,  H01J39/34

CPC classification number: H01J49/025 ,  H01J43/06

Abstract: An apparatus for precisely locating the components at the input and output of an electron multiplier which includes mounting plates having precisely located holes for securing a plurality of arms in a predetermined arrangement. Mounted on the arms of the compoents which are fixed in their proper position when the apparatus is assembled.