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. © 2009 Elsevier B.V. All rights reserved.
CITATION STYLE
Wauters, F., Kraev, I., Zákoucký, D., Beck, M., Golovko, V. V., Kozlov, V. Y., … Severijns, N. (2009). A GEANT4 Monte-Carlo simulation code for precision β spectroscopy. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 609(2–3), 156–164. https://doi.org/10.1016/j.nima.2009.08.026
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