A GEANT4 Monte-Carlo simulation code for precision beta spectroscopy

0338847 - ÚJF 2010 RIV NL eng J - Journal Article
Wauters, F. - Kraev, I. - Zákoucký, Dalibor - Beck, M. - Golovko, V. V. - Kozlov, V. Yu. - Phalet, T. - Tandecki, M. - Traykov, E. - Van Gorp, S. - Severijns, N.
A GEANT4 Monte-Carlo simulation code for precision beta spectroscopy.
Nuclear Instruments & Methods in Physics Research Section A. Roč. 609, 2-3 (2009), s. 156-164. ISSN 0168-9002. E-ISSN 1872-9576
Institutional research plan: CEZ:AV0Z10480505
Keywords : beta decay * nuclei * electrons
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.317, year: 2009

The measurement of the beta asymmetry parameter in nuclear beta 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 beta radiation, i.e. the geometry of the setup, the effect of the magnetic field on the trajectories of beta 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 beta 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.
Permanent Link: http://hdl.handle.net/11104/0182510