Passively shimmed principal detector elements for toroid cavity detector NMR probes

A passively shimmed, toroidal cavity NMR detector which detects NMR spectra of a sample of a gas fluid, liquid, semisolid, solid, or mixtures thereof contained in a sample volume in the shape of a toroid that is bounded by flat ends of first and second hemispherical structures, an exterior surface of a rod, and an interior surface of a containment sleeve.

A cylindrical containment sleeve covering a passively shimmed, toroidal cavity NMR detector which contains a sample in a toroidal volume bounded by flat ends of first and second hemispherical structures, an exterior surface of a rod, and an interior surface of said cylindrical containment sleeve.

A cylindrical sleeve comprised of a hard and a flexible material covering a passively shimmed, toroidal cavity NMR detector containing a sample in a toroidal volume bounded by flat ends of first and second hemispherical structures, an exterior surface of a rod, and an interior surface of said cylindrical sleeve.

A cylindrical sleeve comprised of conductive exterior materials and non conductive and flexible interior materials covering a passively shimmed, toroidal cavity NMR detector containing a sample in a toroidal volume bounded by flat ends of first and second hemispherical structures, an exterior surface of a rod, and an interior surface of said cylindrical sleeve, which provides a conductive surface for RF currents on an exterior surface of said sleeve so as not to make electrical contact with the NMR detector disposed within said cylindrical sleeve.

A cylindrical sleeve covering a passively shimmed, toroidal cavity NMR detector comprised of conductive exterior materials forming a conductive path for RF currents, and flexible interior materials containing a sample in a toroidal volume bounded by flat ends of first and second hemispherical structures, an exterior surface of a rod, and an interior surface of said cylindrical sleeve, wherein said cylindrical sleeve provides a conductive surface for the RF currents on an exterior surface of said sleeve so as not to make electrical contact with the NMR detector contained within said sleeve, and further comprising first conductive films on an interior of said cylindrical sleeve in contact with said hemispherical structures, and second conductive films on an exterior of said sleeve, with said first and second conductive films forming a capacitor between the exterior and interior surfaces of said cylindrical sleeve.

A cylindrical sleeve having interior and exterior metallic surfaces and covering a passively shimmed, toroidal cavity NMR detector comprised of exterior materials forming a conductive path for RF currents, and flexible interior materials containing a sample in a toroidal volume bounded by flat ends of first and second hemispherical structures, an exterior surface of a rod, and an interior surface of said cylindrical sleeve, wherein said cylindrical sleeve provides a conductive surface for the RF currents on an exterior surface of said sleeve so as not to make electrical contact with the NMR detector disposed within said sleeve, and further comprising first conductive films on the interior of said cylindrical sleeve that do not contact the hemispherical structures, or comprising second conductive films on the exterior of said sleeve, with said first or second conductive films forming a capacitor between said rod and the interior or exterior metallic surface of said cylindrical sleeve, respectively.