RF coil for measuring nuclear magnetic resonance phenomena

摘要

An object is to increase the self resonance frequency of an RF coil. The RF coil used to detect nuclear magnetic resonance includes two guard rings arranged along their axial direction with a space therebetween and first and second vertical band parts that are substantially straight in shape and opposed each other. The vertical band parts have (1) a straight type structure in which both the vertical band parts are substantially straight or tapered, (2) a separate wing type in which both the vertical band parts are substantially straight or tapered and a separate wing part is separately provided between the two vertical band parts, or (3) an asymmetric wing type in which one of the vertical band parts is substantially straight or tapered and the other vertical band part has a wing portion projecting toward said one of the vertical band part along the guard ring.