1. Beta-decay experiments of neutral atoms in a magneto-optical trap
- Author
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Dilling, J., Behr, J.A., Gorelov, A., Swanson, T., Häusser, O., Melconian, D., Jackson, K.P., Trinczek, M., Giesen, U., and D’Auria, J.M.
- Abstract
Magneto optical traps (MOT) allow the cooling and storing of neutral atoms in a volume of a few cubic millimeters by use of laser beams and a magnetic field. Such devices offer new and exciting opportunities for precision measurements of radioactive isotopes. Here we present experiments performed with a double-MOT system coupled to the on-line separator TISOL at TRIUMF/Vancouver, Canada. For the first time, the Β-decay of free atoms stored in such a device could be observed. We report on coincidence measurements between beta-particles and the argon recoils in the decay of 37K and 38rm{m}}K. The charge state ratios of the recoil-ions were deduced by Time-Of-Flight separation in an acceleration field. The final goal of those investigations is a precision test of the Standard Model by measuring the –nu-correlation parameter a.
- Published
- 1998
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