Результаты исследований: Материалы конференций › материалы › Рецензирование
The most precise measurement of total magnetic field strength is provided nowadays by quantum magnetometers based on the Zeeman effect in radio-spectra of nuclei and atoms. The optically pumped potassium magnetometer based on a single resolved magnetic resonance line is considered to be the most advanced one when the highest base line stability or/and short-term sensitivity are required. The ultimate potential resolution of potassium magnetic resonance line has been found better than 10 fT/Hz1/2 under expected base-line stability not worse than 10 pT. This highest performance can be reached using paraffin coated cells of about 1 litre volume under very low pumping light intensity and potassium vapour density providing the resonance line width of about 1 Hz. The base line stability can be further 10 times improved at the expense of short-term sensitivity. Both lamp pumping and laser pumping regimes have been studied. The laser pumping further improves 2-3 times both leading characteristics.
Язык оригинала | английский |
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Состояние | Опубликовано - 1997 |
Событие | Proceedings of the 1997 International Conference on Marine Electromagnetics - London, UK Продолжительность: 23 июн 1997 → 26 июн 1997 |
конференция | Proceedings of the 1997 International Conference on Marine Electromagnetics |
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Город | London, UK |
Период | 23/06/97 → 26/06/97 |
ID: 74228309