公开(公告)号：US2228941A

公开(公告)日：1941-01-14

申请号：US33818940

申请日：1940-05-31

Applicant: RCA CORP

Inventor： AYER RAYMOND B

IPC: H01J1/15

CPC classification number: H01J1/15

公开(公告)号：US2133434A

公开(公告)日：1938-10-18

申请号：US74137034

申请日：1934-08-25

Applicant: BELL TELEPHONE LABOR INC

Inventor： CHARLES DEPEW ,  RONCL VICTOR L

IPC: H01J1/15 ,  H01J17/06

CPC classification number: H01J1/15 ,  H01J17/06

公开(公告)号：US1987424A

公开(公告)日：1935-01-08

申请号：US62425232

申请日：1932-07-23

Applicant: TELEFUNKEN GMBH

Inventor： WALDEMAR WEHNERT

IPC: H01J1/15

CPC classification number: H01J1/15

公开(公告)号：US1946603A

公开(公告)日：1934-02-13

申请号：US36165229

申请日：1929-05-09

Applicant: ELECTRONS INC

Inventor： WEDEL CARL J R H VON

IPC: H01J1/15

CPC classification number: H01J1/15 ,  Y10T29/49881 ,  Y10T428/12201 ,  Y10T428/12333 ,  Y10T428/12451 ,  Y10T428/12535 ,  Y10T428/12646

公开(公告)号：US1911024A

公开(公告)日：1933-05-23

申请号：US21026227

申请日：1927-08-03

Applicant: WESTINGHOUSE ELECTRIC & MFG CO

Inventor： KIMMELL WILLIAM J ,  LEE SUTHERLIN

IPC: H01J1/15

CPC classification number: H01J1/15

公开(公告)号：US1839323A

公开(公告)日：1932-01-05

申请号：US34114329

申请日：1929-02-19

Applicant: SIEGMUND LOEWE

Inventor： SIEGMUND LOEWE

IPC: H01J1/15

CPC classification number: H01J1/15

公开(公告)号：US1410062A

公开(公告)日：1922-03-21

申请号：US1410062D

IPC: H01J1/15

CPC classification number: H01J1/15

公开(公告)号：US10056218B1

公开(公告)日：2018-08-21

申请号：US15435976

申请日：2017-02-17

Applicant: Savannah River Nuclear Solutions, LLC

Inventor： Joshua T. Hewitt ,  Gregory Hall ,  Charles R. Schick, Jr.

IPC: H01J1/14 ,  H01J49/16 ,  H01J1/15

Abstract: Methods and systems for thermal ionization of a sample and formation of an ion beam are described. The systems incorporate a thermal ionization filament that is formed of a graphene-based material such as graphite, graphene, graphene oxide, reduced graphene oxide or combinations thereof. The filament material can be doped or chemically modified to control and tune the work function of the filament and improve ionization efficiency of a system incorporating the filament. The systems can be utilized in forming an ion beam for target bombardment or analysis via, e.g., mass spectrometry.

公开(公告)号：US09129771B2

公开(公告)日：2015-09-08

申请号：US14224149

申请日：2014-03-25

Applicant: HITACHI HIGH-TECH SCIENCE CORPORATION

Inventor： Anto Yasaka ,  Yasuhiko Sugiyama ,  Hiroshi Oba

IPC: G21K5/04 ,  H01J27/26 ,  H01J37/08 ,  H01J1/15 ,  H01J1/18 ,  H01J3/04

CPC classification number: H01J27/26 ,  H01J1/15 ,  H01J1/18 ,  H01J3/04 ,  H01J27/024 ,  H01J37/08 ,  H01J2237/002 ,  H01J2237/06316

Abstract: There is provided an emitter structure, a gas ion source including the emitter structure, and a focused ion beam system including the gas ion source. The emitter structure includes a pair of conductive pins which are fixed to a base member, a filament which is connected between the pair of conductive pins, and an emitter which is connected to the filament and has a sharp tip. A supporting member is fixed to the base material, and the emitter is connected to the supporting member.

Abstract translation: 提供了发射极结构，包括发射极结构的气体离子源和包括气体离子源的聚焦离子束系统。 发射极结构包括固定到基底构件的一对导电引脚，连接在一对导电引脚之间的细丝和连接到灯丝并具有尖锐尖端的发射极。 支撑构件固定在基材上，发射体与支撑构件连接。

公开(公告)号：US08547005B1

公开(公告)日：2013-10-01

申请号：US12851562

申请日：2010-08-06

Applicant: Peter Clark Smith ,  Robert W. LeClair

Inventor： Peter Clark Smith ,  Robert W. LeClair

IPC: H01J1/15

CPC classification number: H01J1/22 ,  H01J1/14

Abstract: The electron emission portion of a cathode for an electron gun has layers of substrate material formed from a ceramic powder such as Aluminum nitride. The substrate layers have conductive traces formed on them, the conductive traces made from sintered tungsten or alternatively a refractory foil. When current is passed through the conductive traces, heat is coupled to a cathode which is thermally coupled to the heater assembly. In another embodiment of the invention, one of the layers of the heater includes a thermionic emission material and optionally a work function lowering material such as BaO, which allows the outer layer of the multi-layer heater to directly emit electrons. In another embodiment of the invention, a control grid is formed on a layer above the thermionic cathode layer, which provides for a complete electron gun assembly having a heater, cathode with a reduced work function material, and control grid to be fabricated as a single unit at the same time.

Abstract translation: 用于电子枪的阴极的电子发射部分具有由诸如氮化铝的陶瓷粉末形成的衬底材料层。 衬底层具有形成在其上的导电迹线，导电迹线由烧结钨或替代性的耐火箔制成。 当电流通过导电迹线时，热耦合到热耦合到加热器组件的阴极。 在本发明的另一个实施例中，加热器的一个层包括热离子发射材料和任选的诸如BaO的功函数降低材料，其允许多层加热器的外层直接发射电子。 在本发明的另一个实施例中，控制栅格形成在热离子阴极层上方的层上，其提供了一个完整的电子枪组件，该电子枪组件具有加热器，具有减少的功函数材料的阴极以及要被制造为单个的控制栅格 单位同时进行。