Q value related mass determinations using a Penning trap
2007 (English)In: Hyperfine Interactions, ISSN 0304-3843, E-ISSN 1572-9540, Vol. 173, no 1-3, 73-83 p.Article in journal (Refereed) Published
We report here about measurements of reaction and decay Q values by precise determination of pairs of atomic masses. These were performed with the Penning trap mass spectrometer SMILETRAP. Measurements with Penning traps give reliable and accurate masses, in particular Q values, due to the fact that certain systematic errors to a great deal cancel in the mass difference between the two atoms defining the Q value. Some Q values that are of fundamental interest will be discussed here, for example, a new Q value for the 6Li (n,γ) 7Li reaction, for the β-decay of tritium, related to properties of the electron neutrino mass, and for the neutrino-less double β-decay of 76Ge, related to the question of whether the neutrino is a Majorana particle or not. In case of the latter two we report the most accurate Q values, namely 18,589.8(12) eV for the tritium decay and 2,038.997(46) keV for the neutrino-less double β-decay of 76Ge.
Place, publisher, year, edition, pages
Nederländerna: Springer , 2007. Vol. 173, no 1-3, 73-83 p.
Penning trap, Precision mass determinations, Q value, SMILETRAP
Atom and Molecular Physics and Optics
Research subject Physics
IdentifiersURN: urn:nbn:se:uu:diva-218628DOI: 10.1007/s10751-007-9545-0OAI: oai:DiVA.org:uu-218628DiVA: diva2:696357