Radial confinement potential investigation of the quadrupole linear ion trap based on trapped 199Hg+ ions

Abstract

Abstract: The effect of radial confinement potential on the trapped 199Hg+ ion number in quadrupole linear ion trap was studied through experiments according to the stability condition of Mathieu equation. It is found that, as the radial confinement potential increases, the intensity of fluorescence becomes larger, the spectrum width becomes narrower, and the center frequency becomes smaller. Then, a miniaturized radio frequency (RF) source was designed to guarantee the stability of trapped ion number in quadrupole linear ion trap for the microwave 199Hg+ ion frequency standards. The Amplitude stability of the RF source is 0.51V expressed as standard deviation（SD）. The volume of the RF source is 0.1L, and the power consumption is about 3.5W which can meet the requirements of the microwave 199Hg+ ion frequency standards miniaturization.

Key words: quadrupole linear ion trap, trapped 199Hg+ ions, stability, miniaturized

Wang Man1,2,3，Liu hao1,2，Chen Yi-he1,2，She Lei1,2,Yan Bi-bo1,2,3and Li Jiao-mei*1,2. Radial confinement potential investigation of the quadrupole linear ion trap based on trapped 199Hg+ ions[J]. Chinese Journal of Quantum Electronics.

References

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