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| Content Provider | Springer Nature Link |
|---|---|
| Author | Srivastava, Anurag So, Jin Kyu Wang, Yiman Wang, Jinshu Raju, R. S. Han, Seong Tae Park, Gun Sik |
| Copyright Year | 2009 |
| Abstract | The design of a sheet-beam electron gun with planar cathode was made with the help of a three-dimensional electrostatic field solver that was capable of forming a sheet-beam of 19 mA at 12 kV. It uses one-dimensional three-fold beam cross-sectional area compression meets the specific requirement of a beam to be formed of height 30 µm and width 600 µm at the beam–waist position with over 100 A/cm$^{2}$ uniform current density and 0.068 π-mm-mrad emittance, typically, for 0.5 THz devices. A novel beam focusing electrode (BFE) provided with extended-corner rectangular-aperture geometry alleviating the commonly encountered sheet-beam formation problem with a gun that uses a conventional BFE, as well as it reduced beam emittance more than 50%. The practicability of the design was tested by the high-voltage, the thermal and structural analyses. Work has been initiated to test the performance of special high current scandate cathode using anode-aperture mapping. |
| Starting Page | 670 |
| Ending Page | 678 |
| Page Count | 9 |
| File Format | |
| ISSN | 18666892 |
| Journal | International Journal of Infrared and Millimeter Waves |
| Volume Number | 30 |
| Issue Number | 7 |
| e-ISSN | 15729559 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2009-05-05 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Sheet-beam Electron gun Terahertz (THz) devices Beam compression Scandate cathode Beam emittance Classical Electrodynamics, Wave Phenomena Electronics and Microelectronics, Instrumentation Electrical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Instrumentation Condensed Matter Physics Electrical and Electronic Engineering Radiation |
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