行波管用稀土磁环轴向场调制方法  

Methods of Preparing Axial Peak Field of Magnetic Rings for Travelling Wave Tube

作　　者：程玲莉[1] 谢红[1] 

机构地区：[1]西南应用磁学研究所,四川绵阳621000

出　　处：《磁性材料及器件》2008年第3期60-62,共3页Journal of Magnetic Materials and Devices

摘　　要：讨论了行波管周期永磁聚焦系统用稀土磁环轴向峰值场调制方法,即磁环不饱和充磁法和饱和充磁后加反向脉冲场法,并从磁环温度稳定性和磁性能参数两个方面比较了这两种方法的优缺点。结果表明磁环饱和充磁后施加反向脉冲场可消除不可逆损失。采用此方法调制的磁环轴向峰值场,磁环温度稳定性好。In this paper, we discussed two methods of preparing axial peak field of magnet rings, or unsaturable magnetizing and saturable magnetizing followed by demagnetizing in a pulse field. The comparison of advantage and disadvantage was made between the two methods in temperature stability and magnetic properties .The results indicated that opposing pulse field can eliminate irreversible loss of magnetization of magnet rings. Magnet rings magnetized saturabily combined with demagnetizing by pulse field have better temperature stability.

关 键 词：周期永磁聚焦系统 轴向峰值场 调制方法 稳定性 

分 类 号：TN124[电子电信—物理电子学] TM273[一般工业技术—材料科学与工程]