Author/Authors :
Wauters، نويسنده , , F. and Kraev، نويسنده , , I. and Zلkouck، نويسنده , , D. and Beck، نويسنده , , M. and Golovko، نويسنده , , V.V. and Kozlov، نويسنده , , V.Yu. and Phalet، نويسنده , , T. and Tandecki، نويسنده , , M. and Traykov، نويسنده , , E. and Gorp، نويسنده , , S. Van and Severijns، نويسنده , , N.، نويسنده ,
Abstract :
The measurement of the β asymmetry parameter in nuclear β decay is a potentially very sensitive tool to search for non V – A components in the charge-changing weak interaction. To reach the required precision (percent level) all effects that modify the emission pattern of the β radiation, i.e. the geometry of the setup, the effect of the magnetic field on the trajectories of β particles as well as (back)scattering in the source, on the sample holder and on the detector, have to be correctly taken into account in the analysis of the data. A thorough study of these effects and a new method based on detailed GEANT4 Monte-Carlo simulations that was developed for this purpose is presented here. The code was developed for β asymmetry measurements by means of the Low Temperature Nuclear Orientation (LTNO) method, but can in principle be generalized to other experimental setups using other polarization techniques.
Keywords :
Brute force low temperature nuclear orientation , Weak interaction , GEANT4 , PIN-diode , ? particles , scattering
