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Numerical simulation program of multicomponent ion beam transport from ECR ion source
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作者 MALei SONGMing-Tao +4 位作者 CAOYun ZHAOHong-Wei ZHANGZi-min LIXue-Qian LIJia-Cai 《Nuclear Science and Techniques》 SCIE CAS CSCD 2004年第6期352-355,共4页
In order to research multi-component ion beam transport process and improve transport efficiency, a spe- cial simulating program for ECR beam is becoming more and more necessary. We have developed a program written by... In order to research multi-component ion beam transport process and improve transport efficiency, a spe- cial simulating program for ECR beam is becoming more and more necessary. We have developed a program written by Visual Basic to be dedicated to numerical simulation of the highly charged ion beam and to optimization of beam dynamics in transport line. In the program the exchange of electrons between highly charged ions and low charged ions or neutral atoms (residual gas in transport line) is taken into account, adopting classical molecular over-barrier model and Monte Carlo method, so the code can easily give the change of charge state distribution along the trans- mission line. The main advantage of the code is the ability to simultaneously simulate a large quantity of ions with different masses and charge states, and particularly, to simulate the loss of highly charged ions and the increase of low charged ions due to electron exchange in the whole transport process. Some simulations have been done to study the transmission line of LECR3[1] which is an ECR ion source for highly charged ion beam at IMP. Compared with ex- perimental results, the simulations are considered to be successful. 展开更多
关键词 多成分离子束 分子障碍模型 交换放电 蒙特卡罗法 ECR 物理仿真
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