@inproceedings{f34f97d60e5d47f39285162121c0af8c,

title = "In-trap decay spectroscopy of radioactive nuclei at TITAN / TRIMUF for a determination of 2νββ matrix elements",

abstract = "To extract the effective neutrino Majorana mass from an observed 0νββ decay, precise knowledge of the involved nuclear matrix element is required. This poses a challenge to nuclear structure models. In particular, calculations based on the proton-neutron Quasiparticle Random Phase Approximation show significant discrepancies with experimental electron capture (EC) rates of the intermediate nucleus even when tuned on 2νββ decay rates. However, EC branching ratios (BR) are in many cases not well known because the strengths of these decay branches are at the sensitivity limit of traditional experimental techniques. Here, we present a novel approach at TITAN / TRIUMF to measure EC-BR and to overcome shortcomings of previous methods. We also present results of a first proof-of-principle experiment which represents the very first observation of an electron capture in a Penning trap.",

keywords = "2νββ, Electron capture branching ratio, In-trap decay spectroscopy, Matrix elements",

author = "S. Ettenauer and T. Brunner and M. Brodeur and Gallant, {A. T.} and A. Lapierre and R. Ringle and M. Good and C. Andreoiu and P. Delheij and D. Frekers and R. Kr{\"u}cken and J. Dilling",

year = "2009",

doi = "10.1063/1.3293761",

language = "English",

isbn = "9780735407237",

series = "AIP Conference Proceedings",

pages = "100--103",

booktitle = "Intersections of Particle and Nuclear Physics - Proceedings of the 10th International Conference",

note = "10th International Conference on Intersections of Particle and Nuclear Physics ; Conference date: 26-05-2009 Through 31-05-2009",

}