000360220 001__ 360220
000360220 005__ 20250819104325.0
000360220 0247_ $$2doi$$a10.22032/DBT.66345
000360220 0247_ $$2URN$$aurn:nbn:de:gbv:27-dbt-66345-2
000360220 037__ $$aGSI-2025-00817
000360220 041__ $$aEnglish
000360220 1001_ $$00000-0002-1356-8653$$aKiffer, Markus$$b0$$eCorresponding author
000360220 245__ $$aCharacterisation and cooling of captured ensembles of highly charged ions in a Penning trap
000360220 260__ $$bFriedrich-Schiller-Universität Jena$$c2025
000360220 300__ $$a140 p.
000360220 3367_ $$2DataCite$$aOutput Types/Dissertation
000360220 3367_ $$2ORCID$$aDISSERTATION
000360220 3367_ $$2BibTeX$$aPHDTHESIS
000360220 3367_ $$02$$2EndNote$$aThesis
000360220 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1755592958_3748624
000360220 3367_ $$2DRIVER$$adoctoralThesis
000360220 502__ $$aDissertation, Friedrich-Schiller-Universität Jena, 2025$$bDissertation$$cFriedrich-Schiller-Universität Jena$$d2025$$o2025-05-20
000360220 520__ $$aThe electric field experienced by bound electrons in highly charged ions ranks among the strongest available to experimental studies. For moderate atomic numbers, the electric field in hydrogen-like ions is equivalent to current laser systems. Quantitative interaction experiments with ions require a single-species, well-controlled target. In particular, the target’s ion distribution and density must be characterised. This thesis addresses these requirements by producing and characterising a suitable ion target through dynamic capture in a Penning trap as part of the High-Intensity Laser-Ion Trap Experiment. Three key developments have been implemented. First, the ion optics were upgraded to control the initial conditions of the incoming ion bunches. Second, a phosphor screen detector was introduced to measure the radial distribution of the captured ion ensembles. Finally, a new Penning trap setup featuring a dedicated dual-electrode resonator was developed and integrated into the experiment. The presented experimental results demonstrate that the ion ensemble reaches maximum radial density when the incoming ions are aligned with the central axis. Under these conditions, the radial thermalisation process occurs within 50 μs; resulting in a Gaussian-shaped radial distribution characteristic of a weakly coupled ion ensemble in thermal equilibrium. In the axial direction, the applied resonator facilitates the resistive cooling process of the captured ions, reducing the centre-of-mass energy by more than 99 % within 30 to 100 ms. A model is developed to describe the time-resolved induced signal during resistive cooling. From this model, key parameters such as the ion number and axial equilibrium energy are extracted. The combination of these radial and axial results yields an estimated peak density of 50 000 per cubic millimetre. For an upcoming tunnel ionisation experiment, ionisation yields are estimated, with more than 100 ionisations expected per laser pulse.
000360220 536__ $$0G:(DE-HGF)POF4-631$$a631 - Matter – Dynamics, Mechanisms and Control (POF4-631)$$cPOF4-631$$fPOF IV$$x0
000360220 588__ $$aDataset connected to DataCite
000360220 650_7 $$2Other$$aPenning-Käfig
000360220 650_7 $$2Other$$aIon
000360220 650_7 $$2Other$$a530
000360220 693__ $$0EXP:(DE-Ds200)External_experiment-20200803$$1EXP:(DE-Ds200)other-20200803$$5EXP:(DE-Ds200)External_experiment-20200803$$aother$$eExternal experiment at external facility/ no experiment at GSI (other)$$x0
000360220 7001_ $$0P:(DE-Ds200)OR1264$$aStöhlker, Thomas$$b1$$eThesis advisor
000360220 7001_ $$0P:(DE-HGF)0$$aVerdú Galiana, José$$b2$$eReviewer
000360220 7001_ $$0P:(DE-HGF)0$$aSchmidt-Kaler, Ferdinand$$b3$$eReviewer
000360220 773__ $$a10.22032/DBT.66345
000360220 909CO $$ooai:repository.gsi.de:360220$$pVDB
000360220 9101_ $$0I:(DE-Ds200)20121206GSI$$6P:(DE-Ds200)OR1264$$aGSI Helmholtzzentrum für Schwerionenforschung GmbH$$b1$$kGSI
000360220 9131_ $$0G:(DE-HGF)POF4-631$$1G:(DE-HGF)POF4-630$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vMatter – Dynamics, Mechanisms and Control$$x0
000360220 9141_ $$y2025
000360220 920__ $$lyes
000360220 9201_ $$0I:(DE-Ds200)PTS-20220701OR463$$kPTS$$lHIJ / PTS$$x0
000360220 980__ $$aphd
000360220 980__ $$aVDB
000360220 980__ $$aI:(DE-Ds200)PTS-20220701OR463
000360220 980__ $$aUNRESTRICTED