Superconducting hybrid-resonator for receiving NMR-signals
First Claim
1. A radio-frequency (RF)-resonator for resonant transmission and reception of RF-signals at a desired resonance frequency into and out of a sample in an investigational volume within a homogeneous magnetic field B0 of a nuclear magnetic resonance(NMR)-apparatus, the RF-resonator comprising:
- at least two spatially separated superconducting components; and
normally conducting connection elements coupling together said superconducting components, wherein said superconducting components do not form, either individually or collectively, a closed resonance system capable of resonating at the desired resonance frequency, and said superconducting components, together with said normally connecting elements, form at least one closed resonance system capable of resonating at the desired resonance frequency.
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Accused Products
Abstract
An RF resonator for resonant transmission and/or reception of RF-pulses at a desired resonance frequency into or out of a sample (5) within an investigational region in a homogeneous magnetic field B0 of an (NMR)-apparatus has at least two spatially separated superconducting components (1, 1a, 1b, 1c, 1d) which do not constitute, either alone or in combination, a closed resonance system capable of resonating at the desired resonant frequency. Normally conducting connection elements (2a, 2b) are therefore provided to connect the superconducting components conductively and/or capacitively in such a fashion that the superconducting components, together with the normally connecting components, form one or a plurality of closed resonance systems capable of resonating at the desired resonant frequency. In this fashion, despite use of flat superconducting materials, a substantially higher fill factor, a very good homogeneity of the B0 -filed, and a signal-to-noise ratio corresponding to that of prior art are achieved but with high RF-power and a short excitation pulse decay time.
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Citations
17 Claims
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1. A radio-frequency (RF)-resonator for resonant transmission and reception of RF-signals at a desired resonance frequency into and out of a sample in an investigational volume within a homogeneous magnetic field B0 of a nuclear magnetic resonance(NMR)-apparatus, the RF-resonator comprising:
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at least two spatially separated superconducting components; and normally conducting connection elements coupling together said superconducting components, wherein said superconducting components do not form, either individually or collectively, a closed resonance system capable of resonating at the desired resonance frequency, and said superconducting components, together with said normally connecting elements, form at least one closed resonance system capable of resonating at the desired resonance frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A radio-frequency (RF) resonator for resonant transmission and reception of RF-signals at a desired resonance frequency into and out of a sample in an investigational volume within a homogeneous magnetic field B0 of a nuclear magnetic resonance (NMR) apparatus, the RF-resonator comprising:
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at least two spatially separated superconducting components, each of said superconducting components consisting essentially of an elongated narrow plate having a superconducting layer, said plate being oriented parallel to the magnetic field B0 and distributed on a cylindrical surface having an axis parallel to the magnetic field B0 and coinciding with an axis of the sample; and normally conducting connection elements coupling together said superconducting components, wherein said superconducting components do not form, either individually or collectively, a closed resonance system capable of resonating at the desired resonance frequency, and said superconducting components, together with said normally conducting elements, form at least one closed resonance system capable of resonating at the desired resonance frequency.
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17. A radio-frequency (RF) resonator for resonant transmission and reception of RF-signals at a desired resonance frequency into and out of a sample in an investigational volume within a homogeneous magnetic field B0 of a nuclear magnetic resonance (NMR) apparatus, the RF-resonator comprising:
at least two spatially separated superconducting components, each of said superconducting components consisting essentially of an elongated narrow plate having a superconducting layer, said plate being oriented parallel to the magnetic field B0 and distributed on a cylindrical surface having a axis parallel to the magnetic field B0 and coinciding with an axis of the sample; and
normally conducting connection elements coupling together said superconducting components, wherein said superconducting components do not form, either individually or collectively, a closed resonance system capable of resonating at a desired resonance frequency, and said superconducting components, together with said normally conducting elements, form at least one closed resonance system capable of resonating at a desired resonance frequency, wherein said superconducting components are at least one of capacitively and conductively connected, at their two axial ends, to normally conducting, metallic connection elements having high electrical conductivity.
Specification