填充因子对核磁共振谱仪灵敏度的影响

波谱学杂志 ›› 1985, Vol. 2 ›› Issue (1): 31-42.

填充因子对核磁共振谱仪灵敏度的影响

李杰森, 吴冈

北京分析仪器厂

收稿日期:1984-09-15 出版日期:1985-03-05 发布日期:2018-01-23

THE EFFECT OF FILLING FACTOR ON SENSITIVITY OF NMR SPECTROMETER

Li Jieshen, Wu gang

Beijing Analytical Instument Factory

Received:1984-09-15 Online:1985-03-05 Published:2018-01-23

摘要/Abstract

摘要： 讨论了接收线圈填充因子对核磁共振谱仪灵敏度的影响,接收线圈结构参数对灵敏度的影响,核磁共振信号极限信噪比与双T电桥检测信噪比的相互关系,对通常的接收线圈(绕在外径7毫米,内径6毫米的管子外壁)进行了改进:将接收线圈放置在该管子的内壁,实验证实,应用CH₂₀₃核磁共振谱仪(北京分析仪器厂制造),5毫米外径样品管和1%乙基苯样品,灵敏度从20:1(用通常的接收线圈)提高到30:1(用改进了的接收线圈)。

Abstract: The effect of filling factor of receiver coil and the construction parameters of reciever coil on sensitivity of NMRspectrometer and The relationship between the limitation of Signal-Noise ratio for NMR signal and the tested Signal noice ratio for double T-bridge circuit have been discussed, An improvement has been taken to normal receiver coil (it is wound outside a tube which has 7mm O.D. and 6mm I.D.), The reciever coil is put inside the tube against its wall. It has been proved by experiment that using the CH₂₀₃ NMR spectrometer (made by Beijing Analytical Instrument Factory) with 5mm O.D.tube and 1% ethyl benzene, The sensitivity is raised from 20:1 (by normal receiver coil) to 30:1 (by improved reveiver coil).

李杰森, 吴冈. 填充因子对核磁共振谱仪灵敏度的影响[J]. 波谱学杂志, 1985, 2(1): 31-42.

Li Jieshen, Wu gang. THE EFFECT OF FILLING FACTOR ON SENSITIVITY OF NMR SPECTROMETER[J]. Chinese Journal of Magnetic Resonance, 1985, 2(1): 31-42.