Magnetic UCN trapping

Together with PSI and Mainz we performed a measurement using magnetically trapped ultra-cold neutrons to investigate depolarization of neutrons on surfaces. One of the experimental findings is an alternative method to trap very slow neutrons in magnetic field maxima, e.g. to be used for a measurement of the neutron’s life time.

With this measurement it was possible to observe high field seeking spin states of polarized UCN for the first time: High field seekers PLB:
M. Daum et al., Physics Letters B 704 (2011) 456

Further investigations on spin dependent new forces are currently ongoing. Please contact Gaudenz or Peter if you are interested.

The paper on the first observation of trapped high field seeking spin states of ulta-cold neutrons that is now available at Physics Letters B can be found here.