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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Spectrometry and Fundamental Applications I
MS 1.2: Vortrag
Montag, 18. März 2013, 11:30–11:45, F 442
Extraction of neutron-rich fission products from a nuclear reactor for ground state studies: commissioning of the online-coupling at TRIGA-SPEC — •T. Beyer1,2, K. Blaum1,2, M. Block4, K. Eberhardt3,6, M. Eibach2,3, Ch.E. Düllmann3,4,6, F. Herfurth4, D. Lunney5, Sz. Nagy1,4, W. Nörtershäuser3,4, D. Renisch3, and Ch. Smorra1,3 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Physikalisches Institut, Universität Heidelberg — 3Institut für Kernchemie, Universität Mainz — 4GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 5CSNSM, Université de Paris Sud, Orsay, France — 6Helmholtz Institut Mainz
The mass spectrometer TRIGA-TRAP and the laser spectroscopy TRIGA-LASER setup, forming the TRIGA-SPEC experiment, are installed at the research reactor TRIGA Mainz in order to perform high-precision measurements of the ground state properties of short-lived neutron-rich radionuclides. Such measurements allow testing the predictive power of nuclear mass models and support astrophysical nucleosynthesis calculations. The extraction of these nuclei for both experiment branches is achieved by using an aerosol-based gas-jet system to transport fission products from an actinide target located inside the reactor to an external high-temperature surface ion source. TRIGA-SPEC will shortly go online, already having recorded a cyclotron resonance of an ion produced in the source. The commissioning of the online-coupling involving a separator magnet, a radiofrequency quadrupole cooler/buncher, and a pulsed drift tube will be presented.