Rostock 2019 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 8: Precision Mass Spectrometry

MS 8.3: Vortrag

Donnerstag, 14. März 2019, 11:15–11:30, U A-Esch 2

Improving the laser ablation ion source at SHIPTRAP — •Brankica Andelić^1,2, Michael Block^{2, 3, 4}, Premaditya Chhetri^{3, 5}, Holger Dorrer^{2, 4}, Christoph Düllmann^{2, 3, 4}, Julia Even¹, Francesca Giacoppo^{2, 3}, Nasser Kalantar-Nayestanaki¹, Oliver Kaleja^{2, 3, 6}, Andrew Mistry^{2, 3}, Tobias Murböck^{2, 3}, Sebastian Raeder^{2, 3}, Fabian Schneider^{2, 4}, and Klaus Blaum⁶ — ¹KVI-CART, RU Groningen — ²HI Mainz — ³GSI Darmstadt — ⁴JG University Mainz — ⁵TU Darmstadt — ⁶MPIK Heidelberg

One of the possible approaches to determine the neutrino mass is to study the electron capture process where the nucleus decays by capturing an atomic electron and emitting an electron neutrino. Its calorimetrically measured energy spectrum allows to investigate the electron neutrino mass in the sub-eV range if the Q-value of this decay is known with sufficient precision. To eliminate systematic uncertainties, an independent determination of the Q-value is necessary and can be achieved only using Penning-trap mass spectrometry.

The Penning-trap mass spectrometer SHIPTRAP coupled to a laser ablation ion source allows mass measurements with the required precision. To enable measurements on rare isotopes, the laser ablation and injection of the ions have to be efficient. Therefore, we capture the laser-ablated ions in a gas-filled miniature Radio-Frequency Quadrupole that was recently implemented. In this contribution, an overview of the technical developments and optimization of the laser ion source will be given.