An object of the present invention is to provide a cooled NMR probe
including an antenna coil and capable of decreasing an operation
temperature of the antenna coil by effectively cooling the antenna coil,
thereby increasing detection sensitivity of an NMR signal. To attain
this, a probe head according to the present invention includes a coil
support member which supports the antenna coil, and a cooling member
arranged around at least a portion of the coil support member, the
cooling member providing a cooling space between the cooling member and
the coil support member, the cooling space allowing a refrigerant to
circulate therethrough. The cooling member is coupled to the coil support
member such that the refrigerant flowing in the cooling space directly
contacts an outer peripheral surface of the coil support member.