Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 47: Struktur und Dynamik von Kernen VIII

HK 47.5: Vortrag

Donnerstag, 18. März 2010, 15:15–15:30, HG VII

Mass measurements on exotic Cd and Ag nuclei for nuclear structure investigations — •Martin Breitenfeldt — Ernst-Moritz-Arndt-Universität Greifswald

Mass measurements of neutron-rich Cd and Ag isotopes have been performed with the Penning trap mass spectrometer ISOLTRAP. The masses of 112,114−124Ag and 99−109,114,120,122−124,126,128Cd, determined with relative uncertainties between 2·10−8 and 2·10−7, have resulted in significant corrections and improvements of the mass surface. In particular, the mass of 99Cd and 124Ag were previously unknown. In addition, other masses that had to be inferred from Q values of nuclear decays and reactions have now been measured directly. The analysis includes various mass differences, namely the two-neutron separation energies, the applicability of the Garvey-Kelson relations, double differences of masses, δ Vpn, which give empirical proton-neutron interaction strengths, as well as a comparison with recent microscopic calculations. The δ Vpn results reveal that for even-even nuclides around 132Sn the trends are similar to those in the 208Pb region.

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