Electron spin echo system having magnetic field shift during gen

Details Electron spin echo system having magnetic field shift during gen Electron spin echo system having magnetic field shift during gen

1969-06-11

1980-08-26

Moskowitz, Nelson

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324310, 343 18E, G01R 2302

Patent

active

042197759

ABSTRACT:
A method and means of generating an electron spin echo signal having a relatively higher output frequency than the input frequency of the applied 90.degree. and 180.degree. RF pulses applied to an electron spin echo sample located in a static magnetic field by increasing the magnitude of the Zeeman magnetic field by a predetermined amount after the application of the 90.degree. and 180.degree. pulses. Also the spin echo sample is situated in a microwave cavity which has two resonant frequency modes, the first of which has a relatively high Q while the second has a relatively low Q. The 90.degree. and 180.degree. RF pulses are applied to the system at the first resonant frequency having the high Q while the spin echo signal is coupled out of the system at the second resonant frequency having the low Q.

REFERENCES:
patent: 3075156 (1963-01-01), Anderson et al.
patent: 3108275 (1963-10-01), Chisholm
patent: 3226714 (1965-12-01), Applegarth
patent: 3277476 (1966-10-01), Sabin et al.

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