基于LabVIEW的电子顺磁共振信号的采集  

Measurement of electronic paramagnet resonance spectrum based on LabVIEW

作　　者：王力[1] 施芸城[1] 李梓萱 李花兰[1] 高娟慧 周静洁[1] 

机构地区：[1]东华大学理学院物理实验中心,上海200051

出　　处：《物理实验》2013年第12期27-29,共3页Physics Experimentation

基　　金：东华大学理学院大学生创新基金资助

摘　　要：基于LabVIEW数据采集设计了电子顺磁共振信号系统.采用自制扫场电路和带有GPIB接口的高斯计,实现了扫场过程中信号电压与磁场强度的同步采集并实时显示电子顺磁共振谱线.DPPH顺磁材料的g因子和谱线半高全宽的测试结果表明该扫场系统准确性高且重复性好.The improvement of electronic paramagnet resonance （EPR） system was achieved by adding a self-made circuit of power amplifier, a new data acquisition system and a high resolution gauss meter, which were based on NI hardware and software. The measurement of EPR spectrum could be performed under conditions of simultaneously obtaining the values of EPR signal and the am- plitude of the magnetic field. The g factor and the FHMW line width of DPPH sample had been stud- ied and the result showed a high accuracy and precision.

关 键 词：电子自旋共振 G因子 高斯计 LABVIEW 

分 类 号：O482.533[理学—固体物理]