Measurement of the $\beta$ -asymmetry in the decay of magneto-optically trapped, spin-polarized $^{37}\mathrm{K}$ Measurement of the $\beta$-asymmetry in the decay of magneto-optically trapped, spin-polarized $^{37}\mathrm{K}$

Benjamin Fenker, M. Anholm, D. Ashery +9 more

Bulletin of the American Physical SocietyOct 10, 20140 citations

Magneto-optical trapping of radioactive 82Rb atoms

Ralf Guckert, Xinxin Zhao, S. G. Crane +5 more

We report the successful trapping of $6\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${}^{82}\mathrm{Rb}$ ${(t}_{1/2}=75\mathrm{s})$ atoms with a trap lifetime of $\ensuremath{\sim}30\mathrm{s}$ in a magneto-optical trap that is coupled to an off-line mass separator. Efficient sample introduction is achieved by implanting ${}^{82}\mathrm{Rb}$ ions into a small yttrium catcher foil located inside the trapping cell. Upon heating, the radioactive atoms are released from the foil and trapped without significant gas loading. This advancement makes a variety of high-precision electroweak interaction experiments possible, including the measurement of \ensuremath{\beta}-decay correlations associated with spin-polarized ${}^{82}\mathrm{Rb}$ nuclei.We report the successful trapping of $6\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${}^{82}\mathrm{Rb}$ ${(t}_{1/2}=75\mathrm{s})$ atoms with a trap lifetime of $\ensuremath{\sim}30\mathrm{s}$ in a magneto-optical trap that is coupled to an off-line mass separator. Efficient sample introduction is achieved by implanting ${}^{82}\mathrm{Rb}$ ions into a small yttrium catcher foil located inside the trapping cell. Upon heating, the radioactive atoms are released from the foil and trapped without significant gas loading. This advancement makes a variety of high-precision electroweak interaction experiments possible, including the measurement of \ensuremath{\beta}-decay correlations associated with spin-polarized ${}^{82}\mathrm{Rb}$ nuclei.

Physical Review ASep 1, 199830 citations

Progress towards trapping {sup 82}Rb in an optical trap

Ralf Guckert, V. D. Sandberg, D. Tupa +2 more

The efficient coupling of an optical trap to a mass separator is being developed to undertake high-precision electroweak interaction measurements. The use of an ion implantation and subsequent heated foil release method is being pursued as a suitable way of introducing radioactive samples into the ultra high vacuum region of the optical trap without gas loading. The batchwise trapping and cooling of one million {sup 82}Rb atoms is envisioned with overall efficiencies of 1% or more. The cloud of cold radioactive atoms ({approximately}1 mm in diameter) will than be spin polarized and transferred to a second optical trap, repolarized, and loaded in a magnetic trap in which a beta-asymmetry measurement will be performed. The latest developments towards undertaking this experiment will be presented.The efficient coupling of an optical trap to a mass separator is being developed to undertake high-precision electroweak interaction measurements. The use of an ion implantation and subsequent heated foil release method is being pursued as a suitable way of introducing radioactive samples into the ultra high vacuum region of the optical trap without gas loading. The batchwise trapping and cooling of one million {sup 82}Rb atoms is envisioned with overall efficiencies of 1% or more. The cloud of cold radioactive atoms ({approximately}1 mm in diameter) will than be spin polarized and transferred to a second optical trap, repolarized, and loaded in a magnetic trap in which a beta-asymmetry measurement will be performed. The latest developments towards undertaking this experiment will be presented.

Dec 31, 19970 citations

Measurement of the

\beta

-asymmetry in the decay of magneto-optically trapped, spin-polarized

^{37}\mathrm{K}

We report the successful trapping of $6\ifmmode\times\else\texttimes\fi{}{10}^{6}$

{}^{82}\mathrm{Rb}

{(t}_{1/2}=75\mathrm{s})

atoms with a trap lifetime of $\ensuremath{\sim}30\mathrm{s}$ in a magneto-optical trap that is coupled to an off-line mass separator. Efficient sample introduction is achieved by implanting

{}^{82}\mathrm{Rb}

ions into a small yttrium catcher foil located inside the trapping cell. Upon heating, the radioactive atoms are released from the foil and trapped without significant gas loading. This advancement makes a variety of high-precision electroweak interaction experiments possible, including the measurement of \ensuremath{\beta}-decay correlations associated with spin-polarized

{}^{82}\mathrm{Rb}

nuclei.