Divergence of electron beams produced by laser irradiating on metal wires

Chen Shi; Huang Jiaofeng

doi:10.3788/HPLPB20122412.3019

Volume 24 Issue 12

Nov. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(12): 3019-3022

Chen Nan, Dai Man, Gao Feng, et al. Energy spectrum measurement with circular array method[J]. High Power Laser and Particle Beams, 2013, 25: 2995-2998. doi: 10.3788/HPLPB20132511.2995

Citation:

Chen Shi, Huang Jiaofeng. Divergence of electron beams produced by laser irradiating on metal wires[J]. High Power Laser and Particle Beams, 2012, 24: 3019-3022. doi: 10.3788/HPLPB20122412.3019

Chen Nan, Dai Man, Gao Feng, et al. Energy spectrum measurement with circular array method[J]. High Power Laser and Particle Beams, 2013, 25: 2995-2998. doi: 10.3788/HPLPB20132511.2995

Citation:

Chen Shi, Huang Jiaofeng. Divergence of electron beams produced by laser irradiating on metal wires[J]. High Power Laser and Particle Beams, 2012, 24: 3019-3022. doi: 10.3788/HPLPB20122412.3019

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Divergence of electron beams produced by laser irradiating on metal wires

doi: 10.3788/HPLPB20122412.3019

Chen Shi^,,
Huang Jiaofeng

1.
Institute of Fluid Physics,CAEP,P.O.Box 919-105,Mianyang 621900,China

Received Date: 2012-06-26
Rev Recd Date: 2012-08-28
Publish Date: 2012-11-05

Abstract

Abstract

The effect of self-generated magnetic field of electron beams produced by laser irradiating on metal wires on the divergence of the electron beams is studied. The theoretical analysis and magnitude order estimation show that, between the laser spot and the right end of the wire, the electrons are subject to both electrostatic and self-generated magnetic fields, which leads to considerable collimation, and during their motion from the right end of the wire to IP stacks, the space-charge field and magnetic field roughly cancel each other and the divergence is maintained roughly. The classic trajectory Monte Carlo method is used to simulate this process, and the simulation result indicates that both the electron beam divergence and its dependence on wire length could be explained by the self-generated magnetic field.
- laser-produced electron,
- divergence,
- self-generated magnetic field,
- Monte Carlo method

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