Heidelberg 2015 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 2: Precision Mass Spectrometry 2

MS 2.4: Vortrag

Montag, 23. März 2015, 15:30–15:45, PH/HS2

On-line coupling of the TRIGA-SPEC facility at the research reactor TRIGA Mainz — •Jessica Grund for the TRIGA-SPEC collaboration — Institut für Kernchemie, Johannes Gutenberg-Universität, Mainz — PRISMA Cluster of Excellence, Johannes Gutenberg-Universität, Mainz

Experimental data of ground-state properties of exotic nuclei are important to test current nuclear models. The double Penning-trap mass spectrometer TRIGA-TRAP allows precise mass measurements on neutron-rich radionuclides and long-lived transuranium isotopes.

The on-line coupling to the research reactor TRIGA Mainz offers the possibility to measure short-lived nuclides produced by neutron-induced fission of U-235, Pu-239 or Cf-249, respectively. Fission products are extracted by an aerosol-based gas-jet system and are guided through a skimmer system to a high-temperature surface ion source. By means of an aerodynamic lens the aerosols containing the activity are collimated and introduced into the ion source with high efficiency. The low-energy ion beam from the ion source is mass separated with a 90^∘ dipole magnet, followed by a radio-frequency quadrupole cooler/buncher and a pulsed drift tube.

Here we report recent efficiency measurements and performance tests of different parts of the beamline.