低场核磁共振螺线管线圈的设计

Design of solenoid coil for low field NMR.

在常规低场核磁共振(NMR)实验中,NMR响应的空间均匀度与螺线管收发线圈的尺寸、样品的大小以及采用的脉冲序列类型有关,根据这些条件可以确定具有给定射频(RF)场均匀度的线圈最小尺寸。考虑到螺线管匝数、线径等因素对信噪比的影响,对线圈的各项参数进行了优化,设计了具有最佳信噪比性能的螺线管线圈。

The design of a solenoid coil for low field NMR is described. In low field NMR experiments, the spatial uniformity of NMR response is related to the dimension of the solenoidal transceiver coil, the size of the sample and the type of pulse sequence employed. In consideration of these factors, the parameters of the solenoid coil are optimized, such as number of coil turns, wire diameter and so on. So the solenoid coil has the minimum dimension with sufficient field homogeneity and the best SNR is obtained.