Realization of an efficient electron source by ultraviolet-light-assisted field emission from a one-dimensional ZnO nanorods/n-GaN heterostructure photoconductive detector

Nanoscale ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 1351-1359 ◽  
Author(s):  
Yiren Chen ◽  
Zhiwei Zhang ◽  
Hong Jiang ◽  
Zhiming Li ◽  
Guoqing Miao ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Field Emission ◽  
Positive Feedback ◽  
Uv Light ◽  
Zno Nanorods ◽  
Electron Source ◽  
One Dimensional ◽  
Emission Electron ◽  
Gan Heterostructure ◽  
Photoconductive Detector

A type of UV-light-assisted positive-feedback enhanced field emission electron source is proposed.

Off-axis electron holography by field emission electron microscope

1978 ◽  
Vol 36 (1) ◽  
pp. 224-225
Author(s):  
A. Tonomura ◽  
T. Matsuda ◽  
T. Komoda
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
Electron Source ◽  
Electron Gun ◽  
Electron Holography ◽  
One Dimensional ◽  
Interference Fringes ◽  
Emission Electron ◽  
Electric Supply ◽  
Optical Laser

Although the feasibility of electron holography has been verified by several authors, it has not yet been put to practical use. This is because of the lack of a coherent electron source, such as optical laser. In practice, the number of interference fringes produced with a biprism is 200 at most, the exception being one dimensional cases. Off-axis holography requires 5,000∼100,000 interference fringes. Therefore, the useful application of electron holography in higher resolution and phase contrast electron microscopy hinges on development of a coherent electron source capable of producing 5,000 fringes or more.To realize a coherent electron source, a 100 kV field emission electron gun was developed and attached to an electron microscope. In designing the microscope,special care was taken in the column and electric supply. This was done to minimize movement of the small beam spot, which is easily disturbed from outside, so as to maintain the field emission electron beam.

The development of a 200kV monochromated field emission electron source

2014 ◽  
Vol 140 ◽  
pp. 37-43 ◽  
Author(s):  
Masaki Mukai ◽  
Judy S. Kim ◽  
Kazuya Omoto ◽  
Hidetaka Sawada ◽  
Atsushi Kimura ◽  
...  
Keyword(s):  
Field Emission ◽  
Electron Source ◽  
Emission Electron

Silicon Field Emission Electron Source With Individually Controllable Single Emitters

2021 ◽  
pp. 1-7
Author(s):  
Robert Lawrowski ◽  
Matthias Hausladen ◽  
Philipp Buchner ◽  
Rupert Schreiner
Keyword(s):  
Field Emission ◽  
Electron Source ◽  
Emission Electron

Optimization of multi-tip field emission electron source

Vacuum ◽  
1999 ◽  
Vol 52 (3) ◽  
pp. 295-300 ◽  
Author(s):  
N.V. Egorov ◽  
A.A. Almazov
Keyword(s):  
Field Emission ◽  
Electron Source ◽  
Emission Electron

WE-C-103-03: Design of a Novel 3D Field Emission Electron Source for High Power X-Ray Tube

2013 ◽  
Vol 40 (6Part29) ◽  
pp. 481-481
Author(s):  
Y Xu ◽  
D Li ◽  
J Zhang
Keyword(s):  
Field Emission ◽  
High Power ◽  
Electron Source ◽  
X Ray ◽  
Emission Electron
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