High‐pressure NMR probe head for low temperatures

A nuclear‐magnetic‐resonance probe head for investigations under hydrostatic pressures up to 7 kbar is described. Helium gas is used as the pressure transmitting medium allowing low‐temperature measurements. Compact design allows for use in small bore superconducting magnets. As a first result the discovery of a new high‐pressure phase in the superionic conductor RbAg5I5 is presented.