The application of dynamic polarization to earth's field nuclear resonance magnetometers
Burcher, Philip E.
Landrum, Raymond G.
Menneken, Carl E.
MetadataShow full item record
The principle of Nuclear Magnetic Resonance has, for many years, been applied to the measurement of the earth's magnetic field. Of the magnetometers based on this principle, the Free Precession Magnetometer gives the best absolute accuracy available today. Disadvantages of this device are its comparatively slow data rate and transients created by the polarizing current pulses. The application of the Overhauser Effect, or Dynamic Polarization, to a nuclear resonance magnetometer offers advantages in increased data rate and accuracy. Such magnetometers have been limited by the short lifetime of the sample material. Three devices, in which dynamic polarization is used, are described. One of these, a maser oscillator, seems particularly promising. Also included is a study of the requirements for long-lifetime materials suitable for use in a magnetometer.
Showing items related by title, author, creator and subject.
Investigation of minimum resolvable temperature difference formulation for polarized thermal imaging range prediction Guimaraes, Edson F. C. (Monterey, California ; Naval Postgraduate School, 1999-09);Previous measurements have demonstrated that a polarization filter can increase ship-background temperature contrast in the infrared, while decreasing the received radiance. Application of this technique to increasing range ...
Smoke, Jarrad A. (Monterey, California: Naval Postgraduate School, 2017-03);This thesis is an analysis and comparison of two polarimetric imaging cameras. Previous thesis work utilizing the Salsa Bossa Nova polarimetric camera provided modestly successful results in the application of the camera ...
Escue, William David. (1987-06);Corrosion rates and the nature of corrosive attack were investigated for several high damping alloys, including alloys based on the Cu-Mn, Fe-Cr-Al, Fe-Cr-Mo, Ti-Ni, and Cu-Zn-Al systems. Rates and modes of attack were ...