Darmstadt 2008 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 8: Ionenquellen, -optik und Detektionssysteme
MS 8.1: Vortrag
Dienstag, 11. März 2008, 17:30–17:45, 3E
A carbon cluster ion source for mass calibration at TRIGA-TRAP — •Christian Smorra1, Klaus Blaum1,2, Klaus Eberhardt3, Georg Eitel1, Rafael Ferrer1, Sebastian George1,2, Jens Ketelaer1, Dirk Liebe2,3, Szilard Nagy1, and Julia Repp1 — 1Institut für Physik, Universität Mainz, 55099 Mainz, Germany — 2GSI, 62491 Darmstadt, Germany — 3Institut für Kernchemie, Universität Mainz, 55099 Mainz, Germany
TRIGA-TRAP is a high-precision Penning trap mass spectrometer installed at the research reactor TRIGA Mainz in order to determine the masses of short-lived fission products and - in addition to that - also the masses of actinide elements ranging from uranium up to californium. In order to determine precisely the masses of the nuclides of interest, the superconducting magnet providing the strong magnetic field for the Penning trap has to be calibrated by measuring the cyclotron frequency of an ion with well-known mass, which is, if possible, an isobaric nuclide of the ion of interest. Therefore, the best possible choice for mass calibration is to use carbon clusters as mass references, as demonstrated at the ISOLTRAP facility at ISOLDE / CERN [1].
A laser ablation ion source for the production of carbon clusters has been developed using a frequency-doubled Nd:YAG laser. The design, current status, and results of the production of carbon cluster ions, using C60 and Sigradure® samples, as well as other ions will be presented.
A. Kellerbauer et al.: Eur. Phys. J. A 22, 53 (2003).