Mainz 2017 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 2: Precision Mass Spectrometry and Fundamental Applications II
MS 2.1: Invited Talk
Monday, March 6, 2017, 17:00–17:30, RW 2
Single-ion Penning-trap mass spectrometry using a single ion as detector — •Daniel Rodriguez — Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071, Granada, Spain
The eigenfrequencies of a charged-particle stored in a Penning trap (PT) are obtained from the current the oscillating particle induces in the trap electrodes, amplified e.g., by means of a tuned circuit operated at liquid-helium temperature. This detection method has been successfully implemented at several laboratories, yielding outstanding results, but with the highest sensitivity limited to particles with low or medium mass-to-charge ratios. With the primary goal of extending the applicability of PT mass spectrometry to any (single) ion, and make practicable for example PT measurements on SuperHeavy Elements produced in fusion-evaporation reactions, we are developing a method consisting in replacing the tuned circuit by a laser-cooled 40Ca+ (sensor) ion stored in an adjacent trap. After probing an eigenfrequency of the ion of interest, this will be coupled to the sensor ion hold in vacuum at mK temperatures, the emitted photons will be collected, and the analysis of the distribution will allow determining the eigenfrequency. In this contribution, I will show the layout of the TRAPSENSOR facility built in Granada, and the outcomes from a series of developments and experiments, like the construction of the first micro-PT mass spectrometer, and the detailed characterization of the sensor ion used as high-sensitive detector. I will finish the talk discussing on-going experiments in Granada and the medium-term prospects.