Abstract
Optimization of parameters of the M x resonance, which excited between Zeeman sublevels of a sin- gle HFS level of the ground state of an alkali metal in a vacuum cell in a circuit with a single beam for pumping and detection ( M x magnetometer circuit), has been carried out. A simple model taking into account all main factors controlling the resolving power of the M x resonance (including spin-exchange broadening and absorp- tion in a thick layer of the cell has been constructed. It is shown that the spin-resonance broadening of the res- onance line is mainly determined by the requirements imposed on the optical thickness of the cell, which con- siderably restricts the realization of advantages of ultranarrow (<1 Hz) lines in magnetometry. The experiment confirming the efficiency of the model has been carried out.
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