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- W4386601219 abstract "We report here a portable and robust home-built atom gravimeter (USTC-AG11) continuously working in a seismic station in Zhaotong, Yunnan, for over five months. Based on the principle of matter-wave interference, the atom gravimeter is very sensitive to the local gravity and reaches the precision of micro-Gal ($1ifmmodetimeselsetexttimesfi{}{10}^{ensuremath{-}8}mathrm{m}/{mathrm{s}}^{2}$) level. With the technique of vibrational compensation, the sensitivity of the atom gravimeter reaches $38phantom{rule{0.16em}{0ex}}textmu{}mathrm{Gal}/sqrt{mathrm{Hz}}$, the overall noise level is suppressed by 80% compared to the no-vibration-compensation method, and 95% of the vibration noise is effectively suppressed. The design of the atom gravimeter in the electronics and laser optics, especially the laser frequency and phase auto-relock technology, guarantees long-term continuous running. The long-term precision of the atom gravimeters is better than $2phantom{rule{0.16em}{0ex}}textmu{}mathrm{Gal}$, which is comparable to the best classical gravimeter FG-5(X). Our work provides an application for the high-precision atomic gravimeter based on modern quantum sensing technology in the field of geophysics and geodesy survey." @default.
- W4386601219 created "2023-09-12" @default.
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- W4386601219 date "2023-09-11" @default.
- W4386601219 modified "2023-10-11" @default.
- W4386601219 title "Continuous gravity measurement with a portable atom gravimeter" @default.
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- W4386601219 doi "https://doi.org/10.1103/physreva.108.032811" @default.
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