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| Number | Title | Issue Date |
| 7936169 | Polarization analyzer orientation with nuclear magnetic resonance gyroscope An apparatus in one example comprises a polarization filter and a polarization analyzer. The polarization filter comprises a first polarization axis. The polarization analyzer comprises a second polarization axis. The polarization filter is configured to polarize de... | 05/03/2011 |
| 7872473 | Compact atomic magnetometer and gyroscope based on a diverging laser beam An atomic magnetometer that simultaneously achieves high sensitivity, simple fabrication and small size. This design is based on a diverging (or converging) beam of light that passes through an alkali atom vapor cell and that contains a distribution of beam propagat... | 01/18/2011 |
| 7737689 | Vessel for rare gas filling, and method for polarization of rare gas atomic nucleus using said vessel A vessel for rare-gas filling is provided that is capable of realizing a substantially completely circularly polarized light state in the vessel by using a single crystal material for a light entrance window. To this end, the thickness and the crystal axis orientati... | 06/15/2010 |
| 7592806 | Double half RF pulses for reduced sensitivity to eddy currents in UTE imaging A method for creating a magnetic resonance image of an object with at least a first species and a second species, wherein the first species has a first T2 time and the second species has a second T2 time longer than the first T2 time... | 09/22/2009 |
| 7378844 | Magnetic resonance system, receiver & method of generating detecting and digitizing analog MR signals solely within the MR shielded environment A magnetic resonance (MR) system and method for generating information about an object is provided. The MR system comprises at least one MR detector configured to sense a plurality of signals within a shielded environment and a digitizing circuit configured for digi... | 05/27/2008 |
| 7292031 | Micro-cell for NMR gyroscope A cell in one example comprises an alkali metal and a coating of parylene on an interior surface of the cell. In one implementation, the alkali metal may be an optically pumped gaseous phase of an alkali metal. The parylene coating minimizes interaction of the excit... | 11/06/2007 |
| 7239135 | NMR gyroscope An NMR gyroscope in one example comprises a support structure affixed within an enclosure, an NMR cell affixed to the support structure, a plurality of permanent magnets disposed about the NMR cell to produce a magnetic field within the cell, and a field coil dispos... | 07/03/2007 |
| 6507191 | NMR cell system for supercritical fluid measurements and high-pressure cell for NMR There is disclosed an NMR cell system for supercritical fluid measurements. This cell system has an NMR cell in which convection is prevented. A reactive gas and a reactive liquid can be smoothly introduced into the NMR cell. The oxygen (air) inside the N... | 01/14/2003 |
| 6054852 | Process and device for recovering signals from narrow-band, optically pumped magnetometers Methods for obtaining a signal from optically pumped magnetometers are described in which a broadband self-oscillation magnetometer (31, 37) is coupled to an absorption cell (32, 40) in such a way that the self-oscillating magnetometer has the function of... | 04/25/2000 |
| 5256995 | Low helium permeability atomic frequency standard cell and method for forming same An atomic frequency standard cell having low helium permeability includes first and second windows sealed by fusible annular gaskets to sealing surfaces defined by a tubular cylindrical body. One of the windows defines an opening, and a fill tube is seale... | 10/26/1993 |
| 4661782 | Integrated microwave cavity resonator and magnetic shield for an atomic frequency standard The subject invention relates to an improved microwave cavity resonator and internal magnetic shield of small design for use with an atomic frequency standard. In an embodiment for an optical-physics package the invention comprises a light source, a cell ... | 04/28/1987 |
| 4544891 | Nuclear magnetic resonance gyroscope A nuclear magnetic resonance gyroscope which derives angular rotation thef from the phases of precessing nuclear moments utilizes a single-resonance cell situated in the center of a uniform DC magnetic field. The field is generated by current flow throug... | 10/01/1985 |
| 4509014 | Nuclear magnetic resonance gyroscope A nuclear magnetic resonance gyroscope which derives angular rotation thef from the phases of precessing nuclear moments utilizes a single-resonance cell situated in the center of a uniform DC magnetic field. The field is generated by current flow throug... | 04/02/1985 |
| 4495478 | Cavity resonator for atomic frequency standard An improved microwave cavity resonator for use in vapor-cell atomic frequency standards. The resonator comprises a generally-rectangular hollow metallic body designed to support the TE101 mode of standing wave. A dielectric element is positione... | 01/22/1985 |
| 4494085 | Miniaturized atomic frequency standard having both filter cell and absorption cell in resonator cavity An optical-physics package used in an atomic frequency standard is miniaturized and the performance thereof improved. The optical-physics package includes a microwave cavity in which is positioned a filter cell and an absorption cell, preferably located i... | 01/15/1985 |
| 4349798 | Compact microwave resonant cavity for use in atomic frequency standards A compact resonant cavity with a substantially uniform magnetic field in the cavity is formed by lumped resonantly loading a rectangular primary cavity. The lumped capacitive load is produced by forming secondary cavities on opposite sides of the rectangu... | 09/14/1982 |
| 4104577 | Magnetic resonance apparatus Magnetic resonance apparatus having an alignment axis which is located in and oriented parallel to a unidirectional field when the apparatus is in operation. The apparatus includes an absorption cell intersected by the alignment axis having a plurality of... | 08/01/1978 |
