On possible ways for future redefinition of the SI time unit

11 Feb 2021 Viacheslav V. Khruschov

The current methods for realization of the second with the highest accuracy through the frequency of the hyperfine transition between two levels of the ground state of the cesium 133 atom are considered. It is discussed possible ways for the future redefinition of the SI time unit with the help of optical frequency standards, as well as thorium and super-high frequency standards... (read more)

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  • ATOMIC PHYSICS
  • INSTRUMENTATION AND DETECTORS