| 北京慢正电子强束流运行性能测试 |
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| 引用本文： | 曹兴忠,王宝义,王平,马雁云,秦秀波,魏龙. 北京慢正电子强束流运行性能测试[J]. 中国物理 C, 2006, 30(12): 1196-1199 |
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| 作者姓名： | 曹兴忠 王宝义 王平 马雁云 秦秀波 魏龙 |
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| 作者单位： | 中国科学院高能物理研究所核分析技术重点实验室,北京100049 |
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| 基金项目： | 国家自然科学基金 , 中国科学院科研基金 |
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| 摘 要： | 慢正电子强束流采用高能脉冲电子束流轰击金属钽靶, 以产生正负电子对的方式提供正电子, 作为慢正电子束流方法学研究和薄膜材料缺陷研究的束流基础. 本文是在该装置实现运行后, 对慢正电子束流的强度、能散、形貌等运行性能的测试工作的介绍, 以及慢正电子湮没多普勒测量系统的调试和标准样品的测量结果.
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| 关 键 词： | 慢正电子束流 束流强度 能散 束流形貌 正电子湮没 S参数 |
| 收稿时间： | 2006-03-10 |
| 修稿时间： | 2006-03-10 |
Performance of Beijing Intense Slow Positron Beam |
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| CAO Xing-Zhong,WANG Bao-Yi,WANG Ping,MA Yan-Yun,QIN Xiu-Bo,WEI Long. Performance of Beijing Intense Slow Positron Beam[J]. High Energy Physics and Nuclear Physics, 2006, 30(12): 1196-1199 |
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| Authors: | CAO Xing-Zhong WANG Bao-Yi WANG Ping MA Yan-Yun QIN Xiu-Bo WEI Long |
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| Affiliation: | Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, CAS, Beijing 100049, China |
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| Abstract: | Beijing intense slow positron beam has been constructed successfully, which utilizes the pulsed electron beam of the BEPC LINAC with high energy to inject into the Ta target. The system will be used to expand the methodology research on positron beam and to study the defect of film materials. The running performance of DC positron beam will be introduced in this paper, such as the intensity, the energy spread and the beam size. As the main measurement method, Doppler broadening spectrum system of positron annihilation has also been accomplished. |
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| Keywords: | slow positron beam beam intensity energy spread beam size positron annihilation S parameter |
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