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本文简述了电子自旋共振(ESR)的基本原理,并较详细地介绍了我们自行设计、研制成功的高灵敏度404型波谱仪的结构特点和主要性能指标.404型波谱仪为3cm微波波段,高频小调场式,固体器件化的波谱仪.在设计和制作中采用了若干新技术和新方法,仪器的灵敏度高达1.6×10~(-13)·克分子D.P.P.H,分辨率优于3.5×10~(-5);并且经过三年多的使用,结果证明,仪器工作稳定可靠,适合于生物学样品的测量和一般
In this paper, the basic principle of electron spin resonance (ESR) is briefly introduced and the structural characteristics and main performance indicators of the highly sensitive 404 spectrometer designed and developed by ourselves are introduced in detail.404 is a 3cm microwave band , High-frequency small field-mode, solid-state device spectrometer.In the design and production using a number of new technologies and new methods, the instrument sensitivity of up to 1.6 × 10 ~ (-13) · molecule DPPH, resolution better than 3.5 × 10 ~ (-5); And after more than three years of use, the results show that the instrument is stable and reliable, suitable for biological samples of the measurement and general