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高流强电子束在锥形SiO_2毛细管中的导向效应 被引量:1

Guiding effect on strong beam electrons in tapered SiO_2 capillary
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摘要 研究了高流强电子束(1-10μA)在单根锥形SiO2毛细管中的导向效应,测量了出射电子的角分布,分析了入射能量对电子传输效率的影响。实验发现:出射电子呈高斯分布且时间稳定性好,随着入射能量增加,电子在毛细管中的传输效率降低,传输效率与入射能量呈负指数关系。实验结果与导向效应模型符合得很好。 The transmission of strong beam electrons(1 to 10 μA) through a tapered SiO2 capillary was investigated.The time dependence of the total transmitted fraction and one-dimension angular distribution of transmitted electrons were experimentally studied.The result indicates that,the transmitted electrons have the Gaussian distribution and good temporal stability;the transmitted fraction decreases with the incident energy in a negative exponential manner,and this dependence is supported by the guiding effect model.
出处 《强激光与粒子束》 EI CAS CSCD 北大核心 2011年第4期1065-1067,共3页 High Power Laser and Particle Beams
基金 国家自然科学基金项目(10775160)
关键词 电子束 锥形毛细管 导向效应 角分布 传输效率 electron beam tapered capillary guiding effect angular distribution transmitted fraction
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