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arXiv · 0708.3826

Trapping radioactive ^{82}Rb in an optical dipole trap and evidence of spontaneous spin polarization

D. Feldbaum·H. Wang·J. Weinstein·D. Vieira·X. Zhao
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Abstract

Optical trapping of selected species of radioactive atoms has great potential in precision measurements for testing fundamental physics such as EDM, PNC and parity violating beta-decay asymmetry correlation coefficients. We report trapping of 10^4 radioactive ^{82}Rb atoms (t_{1/2}=75 s) with a trap lifetime of ~55 seconds in an optical dipole trap. Transfer efficiency from the magneto-optical trap was ~14%. We further report the evidence of spontaneous spin polarization of the atoms in optical dipole trap loading. This advancement is an important step towards a new generation of precision J-beta correlations measurements with polarized ^{82}Rb atoms.

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D. Feldbaum, H. Wang, J. Weinstein, D. Vieira, X. Zhao. 2007-08-28. Trapping radioactive ^{82}Rb in an optical dipole trap and evidence of spontaneous spin polarization. https://doi.org/10.1103/physreva.76.051402

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