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- W4378083722 abstract "Cold atoms play a very important role in metrology. The ultra-high or extreme-high vacuum pressure can be accurately measured by investigating the collision of cold atoms and residual atoms in the environment. We report a vacuum pressure metrometer using cold 7Li atoms as sensor atoms in a magneto-optical trap and a magnetic trap. The accuracy, uncertainty, and feasibility of the measurements in such two different traps are studied and compared in the pressure range from 10−5 to 10−8 Pa. It is found that the vacuum pressure measurement in a magneto-optical trap is more advantageous with a higher accuracy, higher signal-to-noise ratio, and shorter measurement time under current conditions. The results may be used to realize an applicable cold atom quantum vacuum standard." @default.
- W4378083722 created "2023-05-25" @default.
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- W4378083722 date "2023-05-01" @default.
- W4378083722 modified "2023-10-14" @default.
- W4378083722 title "Vacuum pressure measurement of cold 7Li atoms in the magneto-optical and magnetic trap" @default.
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- W4378083722 doi "https://doi.org/10.1063/5.0149991" @default.
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