Absolute frequency measurement of the 7s${}^2$ ${}^1$S${}_0$ $-$ 7s7p ${}^1$P${}_1$ transition in ${}^{225}$Ra

Abstract

Transition frequencies were determined for transitions in Ra in an atomic beam and for reference lines in Te${}_2$ molecules in a vapor cell. The absolute frequencies were calibrated against a GPS stabilized Rb-clock by means of an optical frequency comb. The 7s${}^2{}^1$S${}_0$(F = 1/2)-7s7p${}^1$P${}_1$(F = 3/2) transition in ${}^{225}$Ra was determined to be $621042124(2)$MHz. The measurements provide input for designing efficient and robust laser cooling of Ra atoms in preparation of a search for a permanent electric dipole moment in Ra isotopes.

arXiv commentAccepted for publication in the rapid communication of Physical review A

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Cited by in corpus (5)

• Parity and Time-Reversal Violation in Atomic Systems
• Radium Ion Optical Clock
• Spectra of barium, radium, and element 120; application of the combined correlation potential, singles-doubles, and configuration interaction ab initio method
• Compilation of spectroscopic data of Radium (Ra I and Ra II)
• Laser cooling and trapping of ${}^{224}$Ra${}^{+}$