电子成像均匀约束磁场的产生及测试分析  

Test and analysis of uniform magnetic fields for imaging of electrons produced in ion-atom collisions

作　　者：冯文天[1] 马新文[1] 刘惠萍[1] 陈兰芳[1] 李斌[1] 曹士娉[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《物理学报》2007年第7期3637-3641,共5页Acta Physica Sinica

基　　金：国家自然科学基金重点项目(批准号:10434100)资助的课题.~~

摘　　要：为增加离子与原子碰撞成像系统中探测电子的立体角,设计了一约束电子的复合型亥姆霍兹线圈装置.对复合型亥姆霍兹线圈的磁场分布进行了理论计算和分析,并对制作的复合型亥姆赫兹线圈产生的磁场进行了实验测量,得出磁场的均匀性好于±0.6%.In order to expand the solid angle for imaging of electrons in ion-atom collisions, we designed a complex Helmholtz coils composed of four single coils. Theoretical simulations were carried out to optimize the arrangement of the coils. The complex is constructed according to the theoretical analysis, and the magnetic fields were measured for interested regions. The measured results show that the relative uniformity of the magnetic fields is± 0.6%, which satisfies the requirements of collision experiments

关 键 词：亥姆霍兹线圈 磁场分布 磁场均匀性 

分 类 号：O562[理学—原子与分子物理]