EP0809271A3 - Electron gun - Google Patents
Electron gun Download PDFInfo
- Publication number
- EP0809271A3 EP0809271A3 EP97303476A EP97303476A EP0809271A3 EP 0809271 A3 EP0809271 A3 EP 0809271A3 EP 97303476 A EP97303476 A EP 97303476A EP 97303476 A EP97303476 A EP 97303476A EP 0809271 A3 EP0809271 A3 EP 0809271A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrons
- area
- section
- emitting surface
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005684 electric field Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/023—Electron guns using electron multiplication
Landscapes
- Particle Accelerators (AREA)
- Microwave Tubes (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
The present invention pertains to an electron gun. The
electron gun comprises an RF cavity having a first side with an
emitting surface and a second side with a transmitting and emitting
section. The gun is also comprised of a mechanism for producing
an oscillating force which encompasses the emitting
surface and the section so electrons are directed between the
emitting surface and the section to contact the emitting surface
and generate additional electrons and to contact the section to
generate additional electrons or escape the cavity through the
section. The section preferably isolates the cavity from external
forces outside and adjacent the cavity. The section preferably
includes a transmitting and emitting screen. The screen can be of
an annular shape, or of a circular shape, or of a rhombohedron
shape. The mechanism preferably includes a mechanism for producing
an oscillating electric field that provides the force and
which has a radial component that prevents the electrons from
straying out of the region between the screen and the emitting
surface. Additionally, the gun includes a mechanism for producing
a magnetic field to force the electrons between the screen and
the emitting surface. The present invention pertains to a method
for producing electrons. The method comprises the steps of moving
at least a first electron in a first direction. Next there is the
step of striking a first area with the first electron. Then there
is the step of producing additional electrons at the first area
due to the first electron. Next there is the step of moving
electrons from the first area to a second area and transmitting
electrons through the second area and creating more electrons due
to electrons from the first area striking the second area. These
newly created electrons from the second area then strike the
first area, creating even more electrons in a recursive, repeating
manner between the first and second areas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65162696A | 1996-05-22 | 1996-05-22 | |
| US651626 | 1996-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0809271A2 EP0809271A2 (en) | 1997-11-26 |
| EP0809271A3 true EP0809271A3 (en) | 2000-03-15 |
Family
ID=24613581
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97925638A Withdrawn EP0900446A1 (en) | 1996-05-22 | 1997-05-20 | Electron gun having multiple emitting sections for generating multiple electron bunches |
| EP97303476A Withdrawn EP0809271A3 (en) | 1996-05-22 | 1997-05-21 | Electron gun |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97925638A Withdrawn EP0900446A1 (en) | 1996-05-22 | 1997-05-20 | Electron gun having multiple emitting sections for generating multiple electron bunches |
Country Status (5)
| Country | Link |
|---|---|
| EP (2) | EP0900446A1 (en) |
| JP (1) | JPH1055763A (en) |
| CA (2) | CA2205989A1 (en) |
| IL (1) | IL120874A0 (en) |
| WO (1) | WO1997044804A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9065244B1 (en) | 2014-05-01 | 2015-06-23 | The Boeing Company | Compact modular free electron laser (FEL) architecture |
| CN111341631B (en) * | 2020-04-07 | 2021-05-14 | 电子科技大学 | An Electromagnetic Wave Generator Using Secondary Electron Multiplication |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2381320A (en) * | 1940-11-28 | 1945-08-07 | Westinghouse Electric Corp | Electromagnetic apparatus |
| US2591322A (en) * | 1946-08-30 | 1952-04-01 | Csf | Generator of ultra-short electromagnetic waves |
-
1997
- 1997-05-16 CA CA002205989A patent/CA2205989A1/en not_active Abandoned
- 1997-05-20 EP EP97925638A patent/EP0900446A1/en not_active Withdrawn
- 1997-05-20 CA CA002254137A patent/CA2254137A1/en not_active Abandoned
- 1997-05-20 IL IL12087497A patent/IL120874A0/en unknown
- 1997-05-20 WO PCT/US1997/008461 patent/WO1997044804A1/en not_active Ceased
- 1997-05-21 EP EP97303476A patent/EP0809271A3/en not_active Withdrawn
- 1997-05-22 JP JP9131929A patent/JPH1055763A/en not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| MAKO F.M & PETER W: "A high-current micro-pulse electron gun", PROC: PARTICLE ACCELERATOR CONFERENCE, 17 May 1993 (1993-05-17) - 20 May 1993 (1993-05-20), pages 2702 - 2704, XP002128262, ISBN: 0-7803-1203-1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| IL120874A0 (en) | 1997-09-30 |
| EP0809271A2 (en) | 1997-11-26 |
| EP0900446A1 (en) | 1999-03-10 |
| JPH1055763A (en) | 1998-02-24 |
| CA2205989A1 (en) | 1997-11-22 |
| CA2254137A1 (en) | 1997-11-27 |
| WO1997044804A1 (en) | 1997-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT NL |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT NL |
|
| 17P | Request for examination filed |
Effective date: 20000530 |
|
| 17Q | First examination report despatched |
Effective date: 20020613 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20030917 |