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MS: Massenspektrometrie

MS 5: Präzisions-MS kurzlebiger Nuklide 1

MS 5.2: Talk

Wednesday, March 15, 2006, 14:30–14:45, H1

High-accuracy mass measurements of short-lived nuclides with ISOLTRAP — •K. Blaum^1,2, S. Baruah³, P. Delahaye⁴, M. Dworschak⁵, S. George^1,2, C. Guénaut⁶, U. Hager⁷, F. Herfurth¹, A. Herlert⁴, A. Kellerbauer⁴, H.-J. Kluge¹, M. Marie-Jeanne⁴, S. Schwarz⁸, L. Schweikhard³, and C. Yazidjian^1,4 — ¹GSI, 64291 Darmstadt, Germany — ²Inst. f. Physik, Universität Mainz, 55099 Mainz, Germany — ³Inst. f. Physik, Universität Greifswald, 17487 Greifswald, Germany — ⁴CERN, Physics Department, 1211 Geneva 23, Switzerland — ⁵Physiaklisches Institut, Universität Würzburg, 97074 Würzburg Germany — ⁶CSNSM-IN2P3-CNRS, 91405 Orsay-Campus, France — ⁷University of Jyväskylä, Department of Physics, 40014 Jyväskylä, Finland — ⁸NSCL, Michigan State University, East Lansing, MI 48824-1321, USA

The Penning trap mass spectrometer ISOLTRAP at ISOLDE/CERN is devoted to accurate mass measurements of short-lived nuclides. Recent mass measurements with a relative mass uncertainty in the order of 10⁻⁸ provide new data for tests of nuclear and astrophysical models. The results for the mass determination of neutron-rich Zn, Sn, and Cd isotopes will be presented. In addition, an overview of new technical developments at ISOLTRAP will be given. Examples are a new ion detector for higher detection efficiency as well as a temperature and pressure regulation for a minimization of magnetic field fluctuations.