Efficient transfer in a double magneto-optical trap system

Swanson, T. B.; Asgeirsson, D. J.; Behr, J. A.; Gorelov, A.; Melconian, D.

doi:10.1364/josab.15.002641

Cited by 35 publications

(39 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The collection and trapping of the 80 Rb used a two-trap apparatus [21] very similar to that in previous β-decay work [22,23]. The 80 Rb 30-keV ion beam from the ISAC facility at TRIUMF was ≈2 × 10 9 /sec from a zirconium carbide target.…”

Section: Experimental Techniquesmentioning

confidence: 99%

Tensor interaction constraints fromβ-decay recoil spin asymmetry of trapped atoms

et al. 2009

Self Cite

View full text Add to dashboard Cite

We have measured the angular distribution of recoiling daughter nuclei emitted from the Gamow-Teller β decay of spin-polarized 80 Rb. The asymmetry of this distribution vanishes to lowest order in the standard model (SM) in pure Gamow-Teller decays, producing an observable very sensitive to new interactions. We measure the non-SM contribution to the asymmetry to be A T = 0.015 ± 0.029 (stat) ±0.019 (syst), consistent with the SM prediction. We constrain higher-order SM corrections using the measured momentum dependence of the asymmetry, and their remaining uncertainty dominates the systematic error. Future progress in determining the weak magnetism term theoretically or experimentally would reduce the final errors. We describe the resulting constraints on fundamental four-Fermi tensor interactions.

show abstract

Section: Experimental Techniquesmentioning

confidence: 99%

Tensor interaction constraints fromβ-decay recoil spin asymmetry of trapped atoms

et al. 2009

Self Cite

View full text Add to dashboard Cite

show abstract

“…We thus routinely get efficiencies exceeding 25% for the full MOT-to-holding ODT transfer process, including all three steps. This can be compared to transporting atoms from one MOT to another MOT one meter away by a push beam, followed by transfer to an ODT, which has been shown to have a ∼4% net efficiency [23], and to the 78% transfer between two 3D MOTs that has been demonstrated by launching the atoms through two atomic funnels [24], which is unfortunately not applicable for an EDM experiment.…”

Section: Discussionmentioning

confidence: 99%

Efficient, tightly-confined trapping of226Ra

et al. 2012

View full text Add to dashboard Cite

We demonstrate a technique for transferring 226 Ra atoms from a 3-dimensional magneto-opticaltrap (MOT) into a standing wave optical dipole trap (ODT) in an adjacent chamber. The resulting small trapping volume (120 µm in diameter) allows for high control of the electric and magnetic fields applied to the atoms. The atoms are first transferred to a traveling-wave optical dipole trap, which is then translated 46 cm to a science chamber. The atoms are subsequently transferred into an orthogonal standing-wave ODT by application of a 1-dimensional MOT along the traveling-wave axis. For each stage, transfer efficiencies exceeding 60% are demonstrated.

show abstract

“…As in previous experiments, we continue to employ a double-MOT system [12] to increase efficiency and remove backgrounds from untrapped atoms. Figure 3 shows the improved geometry…”

Section: Pos(x Lasnpa)010mentioning

confidence: 99%

Precision measurements of beta-decay correlation parameters from trapped atoms and ions

Melconian¹

2014

Proceedings of 10th Latin American Symposium on Nuclear Physics and Applications — PoS(X LASNPA)

View full text Add to dashboard Cite

The correlations of the decay products following the β decay of nuclei have a long history of providing a low-energy probe of the fundamental symmetries of our universe. Over half a century ago, the correlation of the electrons following the decay of polarized 60 Co demonstrated that parity is not conserved in weak interactions. Today, the same basic idea continues to be applied to search for physics beyond the standard model: make precision measurements of correlation parameters and look for deviations compared to their standard model predictions. Efforts to measure these parameters to the 0.1% level utilizing atom and ion trapping techniques are described.

show abstract

Efficient transfer in a double magneto-optical trap system

Cited by 35 publications

References 25 publications

Tensor interaction constraints fromβ-decay recoil spin asymmetry of trapped atoms

Tensor interaction constraints fromβ-decay recoil spin asymmetry of trapped atoms

Efficient, tightly-confined trapping of226Ra

Precision measurements of beta-decay correlation parameters from trapped atoms and ions

Contact Info

Product

Resources

About