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 38mK. 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 β-ν-correlation parameter α.
Original language | English |
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Pages (from-to) | 159-164 |
Number of pages | 6 |
Journal | Hyperfine Interactions |
Volume | 115 |
Issue number | 1-4 |
State | Published - 1998 |
Externally published | Yes |
Keywords
- Beta-decay
- Optical cooling and trapping atoms
- Standard model test