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Recent results of the Penning trap mass spectrometer ISOLTRAP

By G. Audi, D. Beck, K. Blaum, G. Bollen, P. Delahaye, C. Guenaut, F. Herfurth, A. Kellerbauer, H. -j. Kluge, D. Lunney, M. Mukherjee, R. B. Moore, D. Rodríguez, S. Schwarz, L. Schweikhard, G. Sikler, C. Weber and C. Yazidjian

Abstract

[1] at ISOLDE/CERN looks back on an excellent harvest in 2003. The masses of more than 50 short-lived radionuclides have been measured during four runs of in total 20 radioactive beam shifts. Almost all of the masses have been determined with a relative uncertainty in the order of a few 10-8. In 19 cases the accuracy was improved by more than one order of magnitude, in several cases by a factor close to 100. For ten radionuclides the masses have been measured for the first time. The shortest-lived nuclide addressed was 74 Rb with a half-life of only 65ms. The mass measurement with ISOLTRAP is based on the determination of the cyclotron frequencies of ions stored in a homogeneous and stable magnetic field of 6T. ISOLTRAP consists of three functional parts: a radio-frequency quadrupole (RFQ) ion trap and two Penning traps. The linear gasfille

Year: 2011
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