| 高流强电子束在锥形SiO2毛细管中的导向效应 |
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| 引用本文： | 王伟, 陈婧, 于得洋, 等. 高流强电子束在锥形SiO2毛细管中的导向效应[J]. 强激光与粒子束, 2011, 23(04). |
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| 作者姓名： | 王伟 陈婧 于得洋 武晔虹 张明武 蔡晓红 |
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| 作者单位： | 1.中国科学院 近代物理研究所, 兰州 730000;;;2.中国科学院 研究生院,北京 1 00039 |
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| 摘 要： | 研究了高流强电子束(1～10 μA)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。
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| 关 键 词： | 电子束 锥形毛细管 导向效应 角分布 传输效率 |
Guiding effect on strong beam electrons in tapered SiO2 capillary |
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| wang wei, chen jing, yu deyang, et al. Guiding effect on strong beam electrons in tapered SiO2 capillary[J]. High Power Laser and Particle Beams, 2011, 23. |
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| Authors: | wang wei chen jing yu deyang wu yehong zhang mingwu cai xiaohong |
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| Affiliation: | 1. Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;;;2. Graduate University of Chinese Academy of Sciences,Beijing 100039,China |
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| Abstract: | 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． |
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| Keywords: | electron beam tapered capillary guiding effect angular distribution transmitted fraction |
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