永磁微波离子源  

A microwave ion source with permanent magnet

作　　者：宋执中[1] 于金祥[1] 郭之虞[1] 彭士香[1] 明建川[1] 袁忠喜[1] 王忠义[1] 

机构地区：[1]北京大学重离子物理研究所重离子物理教育部重点实验室,北京100871

出　　处：《核技术》2006年第2期90-92,共3页Nuclear Techniques

摘　　要：介绍了2.45 GHz袖珍永磁微波离子源的进展,源的外廓尺寸Φ100 min×100mm,重量小于5 kg。它可工作于脉冲和连续两种放电模式。在微波功率500 W、引出电压45 kV及等离子体电极发射孔径为5 mm的条件下,对于脉冲模式,峰值流强为100 mA,柬流密度500 mA／cm2;而对于连续模式,流强为60 mA,束流密度300 mA／cm2。两种模式的质子比均可达到80％,归一化均方根发射度小于0．1πmm·mrad。The progress of a 2.45 GHz compact microwave ion source with permanent magnet was introduced in this paper. The source outline dimension is Ф0100mm×100mm, and its weight is less than 5 kg. It can operate in both pulse and CW mode. At 500 W microwave power, 45 kV extraction voltage and 5 mm of diameter of emittance hole on the plasma electrode, 100 mA peak current of hydrogen ion beam was extracted in pulse mode, corresponding to a beam density of 500 mA/cm^2; at the same conditions 60 mA hydrogen ion current was extracted and beam density was 300 mA/cm^2 in CW mode. The proton ratios were about 80% and emittances Erms were less than 0. 1πmm·mrad in both modes.

关 键 词：永磁 微波离子源 强流 质子 

分 类 号：TL503.3[核科学技术—核技术及应用]