Hamburg 2009 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 1: Präzisionsmassenspektrometrie, Ionenfallen, FT-IZR-MS, Moleküle, Cluster I
MS 1.2: Invited Talk
Monday, March 2, 2009, 11:15–11:45, VMP 8 R05
Recent activities and results at the Penning-trap mass spectrometer ISOLTRAP — •M. Kowalska1, G. Audi2, D. Beck3, Klaus Blaum4, M. Breitenfeldt5, Ch. Böhm6, Ch. Borgmann4, S. George4, Frank Herfurth3, A. Herlert1, A. Kellerbauer4, D. Lunney2, E. Minaya-Ramirez2, S. Naimi2, D. Neidherr6, M. Rosenbusch5, S. Schwarz7, Lutz Schweikhard5, and U. Warring4 — 1CERN, Geneva, Switzerland — 2Université de Paris Sud, Orsay, France — 3GSI Darmstadt, Germany — 4MPI für Kernphysik Heidelberg, Germany — 5Ernst-Moritz-Arndt-Universität Greifswald, Germany — 6Johannes Gutenberg-Universität Mainz, Germany — 7NSCL MSU, East Lansing, USA
The Penning-trap mass spectrometer ISOLTRAP located at ISOLDE/CERN, with its high performance and ability to address nuclides with production yields of a few 100 ions/s and half-lives below 100 ms, is a powerful tool to investigate the nuclear binding energies. To its recent scientific highlights belong the masses of the proton halo candidate 17Ne, 132,134Sn relevant for the r process in nucleosynthesis and magicity of N = 82, and 223−229Rn revealing a unique behaviour of the double-mass differences proportional to the interaction of the last proton and neutron. 2008 gave also the first discovery of a nuclide in a Penning trap, namely 229Rn. Technical activities included the C-cluster ion source, new excitation schemes in the purifying trap - to increase mass selectivity, studies of systematic effects - to lower the present residual systematic uncertainty, and tests of tape-station system for decay-spectroscopy studies on isobarically-purified samples.