Erlangen 2018 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 2: Laser Assisted Mass Spectrometry
MS 2.2: Vortrag
Montag, 5. März 2018, 14:30–14:45, R 1.020
Single-ion Penning-trap mass measurements using a laser-cooled 40Ca+ ion as sensor — •Manuel J. Gutiérrez1, Jesús J. Del Pozo1, Francisco Domínguez1, Raúl A. Rica1,2, Michael Block3,4,5, and Daniel Rodríguez1,2 — 1Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain — 2Centro de Investigación en Tecnologías de la Información y las Comunicaciones, Universidad de Granada, 18071 Granada, Spain — 3Institut für Kernchemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany — 4GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany — 5Helmholtz-Institut Mainz, 55099 Mainz, Germany
Mass measurements on superheavy elements demand a technique that is single-ion capable and fast, while maintaining the level of precision required for nuclear physics studies. Our proposed technique arises from an existing Paul-trap experiment, where a laser-cooled 40Ca+ (sensor) ion is used as motional energy detector, but now implemented in a Penning-traps beamline. First, the axial motion of the sensor ion is characterized. The target ion is then loaded into the trap, where it forms a two ion crystal, together with the sensor ion, along the axial direction. By measuring the modified axial frequencies through the fluorescence photons emitted by the sensor ion, the target mass is calculated. This contribution will focus on the cooling of the target and sensor ions in 7 Tesla and the analysis method, presenting also the developments carried out for the implementation of the technique.