首页 | 本学科首页   官方微博 | 高级检索  
     检索      

用于静电加速器的高频离子源及其引出特性
引用本文:詹福如,袁宏永,范维程,胡素华,余增亮.用于静电加速器的高频离子源及其引出特性[J].强激光与粒子束,2001,13(4):498-502.
作者姓名:詹福如  袁宏永  范维程  胡素华  余增亮
作者单位:1.中国科学技术大学火灾实验室,安徽 合肥230027;2.中国科学院等离子体物理研究所,安徽 合肥 230031
基金项目:国家“九五”攻关项目资助课题 ( 96-5 3 8)
摘    要: 根据离子束生物工程的需要,设计和研制了一台用于静电加速器的小型高频离子源。针对使用环境从理论上确定了离子源的结构和尺寸。通过实验调试取得了引出束流与引出电压、聚焦电压以及放电气压之间的变化特性曲线,测定了引出束流的束径包络,对束流的不稳定性进行了分析,在设计中采取了有效的措施抑制束流不稳定性。结果表明,离子源的最佳工作条件为引出电压1 600V~1 800V,放电气压在(4~8)×10-4Pa范围,此时离子源可引出最大束流30μA。束流大小及其稳定性均达到预期要求。

关 键 词:高频离子源  束流强度  束径
文章编号:1001-4322(2001)04-0498-05
收稿时间:2001/4/2
修稿时间:2001年4月2日

RF-driven ion source used in an electrostatic acceleratorand its extracting properties
ZHAN Fu ru ,YUAN Hong yong ,FAN Wei cheng ,HU Su hua ,YU Zeng l iang.RF-driven ion source used in an electrostatic acceleratorand its extracting properties[J].High Power Laser and Particle Beams,2001,13(4):498-502.
Authors:ZHAN Fu ru  YUAN Hong yong  FAN Wei cheng  HU Su hua  YU Zeng l iang
Institution:1.State Key Lab of Fire Science, University of Science and Technology of China;Hefei 230027, China; 2. Institute of Plasma Physics, Academy of Sciences, Hefei 230031, China
Abstract:RF driven ion source has been developed for the ion beam bioengineering.As used in an electrostatic accelerat or,the ion source was specially designed considering the structure,weight and the power supplies.The size of the extracting electrode was calculated in d etail.The extracting beam characteristics of the ion source depending on extracting voltage,focusing voltage and gas pressure were obtained by experiments.The variation of the beam radius along th e axis was measured.Factors producing the beam instability were generally discussed,and effective t echniques were used to reduce the beam instability.Experimental results show that the extracting ch aracteristics agree well with the theoretical expectation.The maximum beam curr ent was obtained when the extracting voltage was 1 600-1 800V and the gas pressure was (4-8)×10 -4 Pa.The div erging angle of the beam was 4- 7° at different measuring points,which well satisfies the requirement of ion beam bioengineering.
Keywords:RF  driven ion source  ion bea m current  beam radius
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《强激光与粒子束》浏览原始摘要信息
点击此处可从《强激光与粒子束》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号