A simple design for a double‐tunable probe head for imaging and spectroscopy at high fields

Abstract
A double‐tunable probe head based on the slotted tube resonator is described. Its performance at 2.35 T is comparable to that of single‐tunable designs. The main advantages are a large tuning range, a probe volume that is not reduced by the second circuit, and a simple design. © 1990 Academic Press, Inc.