Absolute frequency measurement of the 7s2 1S0 - 7s7p 1P1 transition in 225Ra

B. Santra, U. Dammalapati, A. Groot, K. Jungmann, L. Willmann

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5 Citations (Scopus)


Transition frequencies were determined for transitions in Ra in an atomic beam and for reference lines in Te2 molecules in a vapor cell. The absolute frequencies were calibrated against a GPS stabilized Rb clock by means of an optical frequency comb. The 7s21S0(F=1/2)-7s7p1P1(F=3/2) transition in Ra225 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.

Original languageEnglish
Article number040501
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
Publication statusPublished - 2014 Oct 2

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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