München 2004 – wissenschaftliches Programm
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MS: Massenspektrometrie
MS 6: Hochaufgelöste und genaue Massenspektrometrie
MS 6.4: Vortrag
Dienstag, 23. März 2004, 17:45–18:00, HS 112
High-precision mass measurements with the Penning trap mass spectrometer SMILETRAP — •Klaus Blaum1,2, Ingmar Bergström3, Michael Björkhage3, Birgit Brandner4, Tomas Fritioff5, Szilard Nagy4 und Reinhold Schuch4 — 1CERN, Division EP, 1211 Geneva 23, Switzerland — 2GSI, Planckstraße 1, 64291 Darmstadt — 3Manne Siegbahn Laboratory (MSL), Frescativägen 24, Stockholm University, S-10405 Stockholm, Sweden — 4Atomic Physics, Fysicum, SCFAB, Stockholm University, S-10691 Stockholm, Sweden — 5CERN, Division AB, 1211 Geneva 23, Switzerland
The motivation behind high-precision mass measurements on stable nuclides is manifold: It ranges from establishing a reliable backbone of known masses along the line of beta-stability, providing masses important for metrology such as fundamental constants, for measuring atomic binding energies in order to test atomic theory and QED, to test the fundamental symmetry CPT, and to give a possible route to realize an atomic definition of the kilogram.
SMILETRAP is a Penning trap mass spectrometer at the Manne Siegbahn Laboratory in Stockholm for mass measurements on highly charged ions. The mass m of ions with charge q stored in a magnetic field B is determined by measurement of the cyclotron frequency ωc = qB/m. Recent measurements with relative mass uncertainties of a few 10−10 address some of the applications mentioned above. The status of SMILETRAP as well as recent results will be presented.