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Department of Physics

Staff profile

Publication details for Prof Simon Cornish

Fan, Isaac, Chang, Chun-Yu, Wang, Li-Bang, Cornish, Simon L., Shy, Jow-Tsong & Liu, Yi-Wei (2014). Refined determination of the muonium-deuterium 1S-2S isotope shift through improved frequency calibration of iodine lines. Physical Review A 89(3): 032513.

Author(s) from Durham


We report a refined determination of muonium 1S -2S transition frequency and its isotope shift with deuterium by recalibrating the iodine reference lines using an optical frequency comb. The reference lines for the muonium and deuterium 1S -2S transitions are determined with a precision of 2.4×10 −10 and 1.7×10 −10 , respectively. An updated muonium-deuterium 1S -2S isotope-shift frequency is derived from these references to be 11 203 464.9(9.2)(4.0) MHz, in agreement with an updated bound-state quantum-electrodynamics prediction based on 2010 adjustments of Committee on Data for Science and Technology and 2.3 times better in the systematic uncertainty than V. Meyer et al. [Phys. Rev. Lett. 84, 1136 (2000)].