Testing head for nuclear resonance measurements comprises a screen arranged between units for producing a high frequency magnetic field and the surface of an object being tested

摘要

Testing head comprises a screen (60) arranged between units for producing a high frequency magnetic field and the surface (38) of an object (50) being tested. The screen amplifies the high frequency magnetic field acting on the object being tested. Preferred Features: The screen has a first opening (62) with a slot. The units for producing a high frequency magnetic field are formed as flat coils (42) which are preferably formed as a conducting coating on a substrate.