Perveance characteristics of intense electron beams in high power cylindrical diodes

Summary form only given, as follows. When an electron beam is generated from a cathode, an electron sheath plasma is also generated so that perveance of the diode is varied and changes the diode output characteristics. In our pulse power system Chundoong (Max 600 kV, 88 kA, 60 ns), the perveance val...

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Bibliographic Details
Main Authors: Kew Yong Sung, Wook Jeon, Seung Hun Chun, Ki Baek Song, Yoon Jung, Mung Chul Choi, Eun Ha Choi, Han Sup Uhm
Format: Conference Proceeding
Language:English
Subjects:
Biomedical measurements
Diodes
Electron beams
Extraterrestrial measurements
Isotopes
Magnetic analysis
Magnets
Physics
Plasma measurements
Plasma sheaths
Online Access:Request full text
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Description
Summary:Summary form only given, as follows. When an electron beam is generated from a cathode, an electron sheath plasma is also generated so that perveance of the diode is varied and changes the diode output characteristics. In our pulse power system Chundoong (Max 600 kV, 88 kA, 60 ns), the perveance value have been experimentally investigated and estimated from diode voltage and diode current. In this experiment, the anode-cathode (A-K) gap distance has been varied from 4 mm to 10 mm. It is noted in this experiment that the diode perveance characteristics could be described as P = 7.0 /spl times/ 10/sup -9/ /d/sup 1.82/. The sheath plasma expansion speed has also been estimated from the experiment which is to be about 7 cm/us under A-K gap distance 4 mm.
ISSN:0730-9244
2576-7208
DOI:10.1109/PLASMA.2003.1228756