Probehead for nuclear magnetic resonance measurements

Abstract

A probehead for nuclear magnetic resonance measurements is disclosed. At least a first and a second distinct kind nuclei are excited in a magnetic field. The probehead comprises a measuring coil cooperating with a sample. The coil is connected to a first terminal for feeding a signal of a first frequency for exciting the first kind of nuclei and/or for receiving a resonance signal emitted by nuclei of the first kind of nuclei, and to a second terminal for feeding a signal of a second frequency for exciting the second kind of nuclei and/or for receiving a resonance signal emitted by nuclei of the second kind of nuclei. A radio frequency transmission line of predetermined length is connected to the measuring coil. The transmission line is bridged at about half of its length by a resonance element. The coupling between the measuring coil, the radio frequency transmission line and the resonance element is set to be overcritical, such that a transmission characteristic of the measuring coil has two maxima with frequencies corresponding to the first and to the second frequency.

Dependencies are inferred from the claim text.