Laser-trapping of Ra-225 and Ra-226 with repumping by room temperature blackbody radiation

Abstract

We have demonstrated Zeeman slowing and capture of neutral Ra-225 and Ra-226 atoms in a magneto-optical trap (MOT). The intercombination transition 1S0-3P1 is the only quasi-cycling transition in radium and was used for laser-cooling and trapping. Repumping along the 3D1-1P1 transition extended the lifetime of the trap from milliseconds to seconds. Room-temperature blackbody radiation was demonstrated to provide repumping from the metastable 3P0 level. We measured the isotope shift and hyperfine splittings on the 3D1-1P1 transition with the laser-cooled atoms, and set a limit on the lifetime of the 3D1 level based on the measured blackbody repumping rate. Laser-cooled and trapped radium is an attractive system for studying fundamental symmetries.

4 pages, 4 figures, to be published in Phys. Rev. Lett; v2: shortened slightly; v3: added additional HFS theory numbers and references, final

References in corpus (13)

• A new limit on the permanent electric dipole moment of ^{199}Hg
• Enhanced T-odd P-odd Electromagnetic Moments in Reflection Asymmetric Nuclei
• Nuclear time-reversal violation and the Schiff moment of 225Ra
• Collective T- and P- Odd Electromagnetic Moments in Nuclei with Octupole Deformations
• Electric dipole moments of Hg, Xe, Rn, Ra, Pu, and TlF induced by the nuclear Schiff moment and limits on time-reversal violating interactions
• Time-Reversal Violating Schiff Moment of 225Ra
• Nuclear Octupole Correlations and the Enhancement of Atomic Time-Reversal Violation
• Time-Reversal-Violating Schiff Moment of 199Hg
• Calculation of parity and time invariance violation in the radium atom
• Calculations of energy levels and lifetimes of low-lying states of barium and radium
• Enhancement of nuclear Schiff moments and time reversal violation in atoms due to soft nuclear octupole vibrations
• Enhancement of parity and time invariance violation in Radium atom
• Calculation of energy levels and transition amplitudes for barium and radium

Cited by in corpus (44)

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• First-principles design and subsequent synthesis of a material to search for the permanent electric dipole moment of the electron
• Bose-Einstein condensate in gases of rare atomic species
• Magneto optical trapping of Barium
• Standard Model tests with trapped radioactive atoms
• Laser cooling for quantum gases
• Dicke superradiance in ordered arrays of multilevel atoms
• Sub-Doppler laser cooling and magnetic trapping of erbium
• Correlation trends in the ground state static electric dipole polarizabilities of closed-shell atoms and ions
• Core-Shell Magneto-Optical Trap for Alkaline-Earth-Metal-Like Atoms
• Reservoir spectroscopy of 5s5p ${}^3$P${}_2$ - 5s$n$d ${}^3$D${}_{1,2,3}$ transitions in strontium
• Precision measurements with polar molecules: the role of the black body radiation
• Atomic Electric Dipole Moments: The Schiff Theorem and Its Corrections
• Theoretical Aspects of Radium-Containing Molecules Amenable to Assembly from Laser-Cooled Atoms for New Physics Searches
• Direct loading of a large Yb MOT on the ${}^1{S}_0\to {}^3{P}_1$ transition
• Isotope shifts of 6s5d ${}^3$D-states in neutral Barium
• Electric dipole moment of ${}^{225}$Ra due to P- and T-violating weak interactions
• Compilation of spectroscopic data of Radium (Ra I and Ra II)
• The prospects for a new search for the electron electric dipole moment in solid Gadolinium iron garnet ceramics
• MCDHF calculations of the electric dipole moment of radium induced by the nuclear Schiff moment
• Photoassociative molecular spectroscopy for atomic radiative lifetimes
• Efficient, Tightly-Confined Trapping of 226Ra
• Nuclear Structure and the Search for Collective Enhancement of P,T-Violation
• Experimental study of vapor-cell magneto-optical traps for efficient trapping of radioactive atoms
• Measurements of the sticking time and sticking probability of Rb atoms on a polydimethylsiloxane coating
• Trapping radioactive ^{82}Rb in an optical dipole trap and evidence of spontaneous spin polarization
• Clock-line-mediated Sisyphus Cooling
• Enhanced Magnetic Trap Loading for Atomic Strontium
• Dark forces and atomic electric dipole moments
• Absolute frequency measurement of the 7s${}^2$ ${}^1$S${}_0$ $-$ 7s7p ${}^1$P${}_1$ transition in ${}^{225}$Ra
• Active Thermal Extraction of Near-field Thermal Radiation
• Radium ion: A possible candidate for measuring atomic parity violation
• A decay microscope for trapped neon isotopes
• Laser cooling and trapping of ${}^{224}$Ra${}^{+}$
• Isotopologue-selective laser cooling of molecules
• Laser-induced thermal source for cold atoms
• Near-threshold correlations of neutrons
• Lifetime determination of the 5d${}^2$~${}^3$F${}_2$ state in barium using trapped atoms
• Test of Symmetries with Neutrons and Nuclei
• Separation Between d${}_{5/2}$ and s${}_{1/2}$ Neutron Single Particle Strength in ${}^{15}$N