Frontiers of Electrical and Electronic Engineering >
PIC simulation study of electron gun with rotational surface cathode
Received date: 20 Apr 2010
Accepted date: 17 Sep 2010
Published date: 05 Dec 2011
Copyright
The electron gun with rotational surface cathode is presented to improve the laminarity of the converging electron beams in this paper, and the function expression of the rotational surfaces is given. The results of particle in cell (PIC) simulation indicate that anode-hole spherical aberration is the major cause for the nonlaminarity of the electron beams. By properly choosing the size of the shape, rotational surface cathode can effectively counteract the effect of the anode-hole spherical aberration and enhance the laminarity of the electron beams. The theoretical analysis was carried out for the explanation of the phenomenon that appeared in the PIC simulation.
Weihao LIU , Shenggang LIU . PIC simulation study of electron gun with rotational surface cathode[J]. Frontiers of Electrical and Electronic Engineering, 2011 , 6(4) : 556 -562 . DOI: 10.1007/s11460-011-0156-9
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