Spin resonance spectrometer and magnet structure

Details Spin resonance spectrometer and magnet structure Spin resonance spectrometer and magnet structure

1976-06-15

1977-09-13

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 34S, 335209, 335306, G01R 3308

Patent

active

040485552

ABSTRACT:
A permanent magnet structure provides high fields (e.g., .about. 4500 Gauss) with excellent uniformity (e.g., .+-. 3 Gauss) over a moderately large volume of the gap (e.g., approximately 20 percent of the gap diameter and gap width). This is accomplished by grinding away a portion of the permanent magnet material at the center of each face of the gap to form a depression, deepest at the center of the face. The magnet may include means for varying the gap width and a modulating coil for low frequency minor variation of the magnetic field. The magnet structure is used in conjunction with a 12 GHz self-excited spin resonance cavity to form a compact, portable electron spin resonance spectrometer.

REFERENCES:
patent: 1932911 (1933-10-01), Rolfe
patent: 2719924 (1955-10-01), Oppenheimer
patent: 3931569 (1976-01-01), Hyde

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