@article{PATENT,
      recid = {8706},
      title = {Passively shimmed principal detector elements for toroid  cavity detector NMR probes},
      number = {PATENT},
      month = {Sep},
      year = {2003},
      abstract = {A novel NMR principal detector element of the present  invention comprises a NMR-active inductor in a radio  frequency (RF) resonance circuit, and mitigates the  distortions in a static magnetic field caused by the  introduction of a toroid cavity NMR detector. The RF  resonance circuit includes a novel principal detector  element, capacitor elements, and a sample chamber (the  cavity). The novel principal detector element defines the  NMR active portion of the inductance of the electronic  resonance circuit. In one embodiment of the invention, the  novel principal detector element includes two hemispheres  connected by a central rod. The central rod can be of any  length and diameter, and the hemispheres can be of any  diameter. A typical embodiment of the invention would  include a rod that is 2 cm long having a diameter of 1 mm,  and hemispheres having a diameter of 5 mm.},
      url = {http://knowledge.uchicago.edu/record/8706},
}