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München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 32: Hauptvorträge III

HK 32.2: Hauptvortrag

Mittwoch, 20. März 2019, 12:05–12:40, Plenarsaal

COLLAPS: revealing nuclear structures of short lived isotopes by collinear laser spectroscopy at CERN-ISOLDE — •Simon Kaufmann for the COLLAPS collaboration — Institut für Kernphysik, TU Darmstadt

High-resolution laser spectroscopy is a proven tool to investigate the structure, size and shape of a variety of nuclei by probing the distortions in the energy schemes of the electrons caused by the nucleus. Collinear laser spectroscopy (CLS) allows the investigation of short-lived isotopes far away from stability down to lifetimes in the millisecond range. Established in the 1980s at the RIB facility CERN-ISOLDE, the COLLAPS experiment evolved throughout the years by various upgrades and developments, but in its core principle it is still in operation today [1, 2]. During these years, also the radioactive ion beam production at ISOLDE was upgraded constantly, enabling CLS on isotopes even further away from stability.

In this talk recent highlights of work at COLLAPS will be presented including measurements in the nickel region (Z=28) and in the much heavier tin region (Z=50). The development of the charge radius along with Z and N is hereby of special interest and the outcome of these measurements serve as an important benchmark for nuclear theories in both mass regions.

[1] R Neugart, 1981, Nucl. Instrum. Methods Phys. Res. 186 165

[2] R Neugart et al, 2017, J. Phys. G: Nucl. Part. Phys. 44 064002

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