SAMOP 2021 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 6: New Developments I

MS 6.1: Invited Talk

Tuesday, September 21, 2021, 14:00–14:30, H2

The Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy and its potential for fast and highly selective mass separation — •Stephan Malbrunot — CERN, ISOLDE, Experimental Physics Department, CH-1211 Geneva 23, Switzerland

Collinear laser spectroscopy (CLS) is a powerful tool to access nuclear ground state properties of short-lived radionuclides such as spin, charge radius, and electromagnetic moments. Conventional CLS is based on the detection of fluorescence from laser-excited ions or atoms. It is limited to radioactive ion beams with yields of more than 100 to 10,000 ions/s, depending on the specific case and spectroscopic transition.

To reach radionuclides with lower production yields, we have developed the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS) [1,2]. It is based on a Multi Reflection Time of Flight (MR-ToF) device in which ions bounce back and forth between electrostatic mirrors. The trapped ions are probed by the laser during each revolution inside the MR-ToF device which largely enhances the sensitivity of CLS.

As part of MIRACLS, we are developing new cooling schemes as well as an unprecedented 30-keV MR-ToF device. These techniques also open new possibilities for fast and highly selective mass separation beneficial for a wide range of applications. This talk will present the MIRACLS concept and its first experimental highlights.

[1] S. Sels et al., Nucl. Instr. Meth. Phys. Res. B, 463, 310 (2020) [2] V. Lagagki et al., Nucl. Instr. Meth. Phys. Res. B, in press (2021)