一般条件下的电子自旋共振(ESR)理论  

Electron spin resonance(ESR)theory under general conditions

作　　者：李鑫 LI Xin(Northwest Training Center of Eastern Airlines Technic Co.,Ltd.,Xi’an 712035,China)

机构地区：[1]东方航空技术有限公司培训部西北培训中心,陕西西安712035

出　　处：《现代电子技术》2024年第12期26-30,共5页Modern Electronics Technique

摘　　要：文中从数学的角度分析了dμz/dt=0在电子自旋共振(ESR)中的物理含义,把ESR理论由直流磁场推广到了交流磁场,而直流磁场下的ESR理论只是当交流磁场的频率为0时的一种特殊情况,从而建立了一般条件下的ESR理论和一般条件下实现ESR的方法。该理论的建立使得采用ESR原理研制的分析仪器省去了耗能大、重量重、造价高的直流磁场,仅采用原有的调制磁场便可实现ESR,从而大大降低了该分析仪器的体积、重量、耗能和成本,具有一定的理论研究和推广应用价值。The physical meaning of the condition dμz/dt=0 in electron spin resonance(ESR)from a mathematical perspective is analyzed.The ESR theory has been extended from DC magnetic field to AC magnetic field,and the ESR theory under DC magnetic field is only a special case when the frequency of AC magnetic field is 0,thus establishing the ESR theory under general conditions and the method of implementing ESR under general conditions.The establishment of this theory can enable analytical instruments developed by means of the ESR principle to eliminate the high energy consumption,heavy weight,and high cost of DC magnetic fields.Only the original modulated magnetic field can be used to realize ESR,greatly reducing the volume,weight,energy consumption,and cost of the analytical instrument.It has a certain theoretical research and promotion application value.

关 键 词：电子自旋共振 直流磁场 交流磁场 拉莫尔进动 射频场 微波场 

分 类 号：TN919-34[电子电信—通信与信息系统] TP311[电子电信—信息与通信工程]