Precision Measurements of the Ba+138 6sS21/2−5dD25/2 Clock Transition
| Autor: | K. J. Arnold, Ting Rei Tan, R. Kaewuam, Murray D. Barrett, Zhiqiang Zhang, Sapam Ranjita Chanu |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 124 |
| ISSN: | 1079-7114 0031-9007 1701-2643 |
| DOI: | 10.1103/physrevlett.124.193001 |
| Popis: | Measurement of the $^{138}{\mathrm{Ba}}^{+}$ ${^{2}S}_{1/2}\ensuremath{-}{^{2}D}_{5/2}$ clock transition frequency and ${D}_{5/2}$ Land\'e ${g}_{J}$ factor are reported. The clock transition frequency ${\ensuremath{\nu}}_{{\mathrm{Ba}}^{+}}=170126432449333.31\ifmmode\pm\else\textpm\fi{}(0.39{)}_{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}(0.29{)}_{\mathrm{sys}}\text{ }\text{ }\mathrm{Hz}$, is obtained with accuracy limited by the frequency calibration of the maser used as a reference oscillator. The Land\'e ${g}_{J}$ factor for the ${^{2}D}_{5/2}$ level is determined to be ${g}_{D}=1.20036739(24)$, which is a 30-fold improvement on previous measurements. The $g$-factor measurements are corrected for an ac-magnetic field from trap-drive-induced currents in the electrodes, and data taken over a range of magnetic fields underscores the importance of accounting for this systematic. |
| Databáze: | OpenAIRE |
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