Beta-decay experiments of neutral atoms in a magneto-optical trap Academic Article uri icon


  • 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 -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 --correlation parameter .

published proceedings


author list (cited authors)

  • Dilling, J., Behr, J. A., Gorelov, A., Swanson, T., Hausser, O., Melconian, D., ... D'Auria, J. M.

citation count

  • 2

complete list of authors

  • Dilling, J||Behr, JA||Gorelov, A||Swanson, T||Hausser, O||Melconian, D||Jackson, KP||Trinczek, M||Giesen, U||D'Auria, JM

publication date

  • December 1998