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Hyperfine Interactions 199 (2011) 29-38
The LPCTrap experiment: measurement of the β-ν angular correlation in 6He+ decay using a transparent Paul trap
P. Velten1, G. Ban1, D. Durand1, X. Fléchard1, E. Liénard1, F. Mauger1, A. Méry2, O. Naviliat-Cuncic1, D. Rodríguez, J.C. Thomas3

The LPCTrap experiment is devoted to the precise measurement of the β-ν angular correlation parameter, a βν , in the pure Gamow-Teller decay of 6He+. This experiment is motivated by the search of the presence of tensor type contributions in the weak interaction. The radioactive source is confined in a transparent Paul trap installed at LIRAT, the low energy beam line of the SPIRAL facility. The β-ν correlation is studied by measuring the time of flight of the recoil ions detected in coincidence with the β particles. During the last experiment, a total of 4 × 106 coincidence events have been recorded which would enable to determine the coefficient with a statistical uncertainty of 0.5%. The status of the analysis is presented in this contribution.
1:  LPCC - Laboratoire de Physique Corpusculaire de Caen
2:  CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique
3:  GANIL - Grand Accélérateur National d'Ions Lourds
Interactions fondamentales
Physics/Nuclear Experiment
Ion trapping – Precision measurement – β-ν correlation