Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
MS: Fachverband Massenspektrometrie
MS 2: Ionenfallen- und FT-IZR-MS, Moleküle, Cluster, Zerfälle und Reaktionen
MS 2.2: Vortrag
Montag, 10. März 2008, 17:00–17:15, 3E
TRIGA-TRAP: A Penning trap setup for mass measurements on exotic and heavy nuclides — •Jens Ketelaer1, Klaus Blaum1,2, Klaus Eberhardt3, Georg Eitel1, Sebastian George1, Rafael Ferrer1, Frank Herfurth2, Szilard Nagy1, W. Nörtershäuser2,3, Julia Repp1, Christian Smorra1, and Christine Weber4 — 1Department of Physics, D-55099, University of Mainz — 2GSI, D-64291 Darmstadt — 3Department of Nuclear Chemistry, D-55099, University of Mainz — 4Department of Physics, FI-40014, University of Jyväskylä
The research reactor Triga Mainz offers unique possibilities for on-line mass measurements on neutron-rich isotopes as produced by fisson of U-235, Pu-239 or Cf-249 targets. In addition, off-line measurements of actinide elements up to Cf-252 are planned. To this end a new Penning trap mass spectrometer will be installed at Triga Mainz, featuring not only the commonly used time-of-flight resonance technique, but also the non-destructive narrow-band image current technique, enabling the detection of a single singly-charged ion stored in the trap. Triga-Trap is the first on-line mass spectrometer for singly-charged heavy ions using this image current detection technique in combination with cryogenic Penning traps. In case of many heavy and superheavy nuclides, the production rates are often less than a few ions per second, but some isotopes exhibit comparably long half-lives in the order of seconds, which allows for repeated measurement cycles on the same trap content. Measurements with the newly developed narrow-band FT-ICR system at Triga-Trap will also serve as tests for future experiments at Shiptrap at Gsi or Mats at Fair.