Japan Atomic Energy Agency 10 Ampere多峰负氢离子源全三维数值诊断  

A full three-dimensional numerical diagnosis of Japan Atomic Energy Agency 10 Ampere multi-cusp negative hydrogen ion source

作　　者：杨超[1] 廖方燕[1] 谢鸿全[1] 

机构地区：[1]西南科技大学国防学院,绵阳621010

出　　处：《物理学报》2013年第21期289-294,共6页Acta Physica Sinica

基　　金：西南科技大学博士基金(批准号:13zx7106)资助的课题~~

摘　　要：本文研制了全三维粒子模拟/蒙特卡罗碰撞算法,并采用该算法对国外研究较热的Japan Atomic Energy Agency10 Ampere(JAEA 10A)离子源进行了全方位的数值诊断,探索了电子能量沉积过程中电子的横向漂移和能量分布规律,分析了离子源放电的主要物理参数对电子沉积的影响作用.模拟及分析结果显示:电子横向漂移(Y方向)来源于过滤区的磁漂移,增加过滤磁场,导致磁漂移增大,横向漂移加剧,且电子的利用率增大;提高放电室气压,电子的碰撞更频繁,进而加剧横向非均匀性,也同时提高电子的利用率.This paper develops a full three-dimensional PIC/MCC algorithm, and uses it to conduct a full range of numerical diagnosis of the hot JAEA IOA ion source at home and abroad, explores lateral drift and energy distribution of electrons in the electron energy deposition process, analyzes the influence of the main physical parameters on the electronic deposition. Simulation and analysis results show that electronic horizontal shift （-Y direction） comes from the filtering zone of the magnetic drift. Increasing the filtering field, the magnetic drift increases, and lateral drift is aggravated, and the utilization of electronics increases; improving the discharge of chamber pressure, the electronic collision will be more frequent; thereby increasing lateral non-uniformity can improve the utilization of electronics.

关 键 词：JAPAN ATOMIC ENERGY AGENCY 10 Ampere多峰负氢离子源 全三维粒子模拟 蒙特卡罗碰撞 

分 类 号：TL63[核科学技术—核技术及应用]