title: Electronic energy level determination in the 4f-subshell in highly charged  lead and the 5d-subshell in highly charged bismuth by atomic structure  calculation-assisted optical spectroscopy
creator: Rosner, Michael Karl
subject: ddc-530
subject: 530 Physics
description: fine-structure transitions shift from the infrared to the optical range. The electronic states in nd and nf subshells cover a variety of different total angular momenta, potentially featuring higher-order multipole clock transitions. By utilising laser-induced ablation inside an electron beam ion trap (EBIT), restrictions on elements applicable as HCIs for optical spectroscopy have been  lifted. Optical spectra of Pb21+ to Pb33+ and Bi9+ to Bi14+ were recorded with high resolution thanks to a newly developed algorithm to correct for thermal drifts. These were compared to dedicated atomic structure calculations. Information about the level structure of 4f3 to 5s24f13 in lead and 5d1  to 5d6 in bismuth were inferred.  The presented level structure determinations are valuable as a benchmark  for atomic structure calculations and are an essential step towards  vacuum-ultraviolet spectroscopy in the search for higher-order optical clock  transitions in the examined ions.
date: 2024
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserver/35278/1/phd_rosner_final.pdf
identifier: DOI:10.11588/heidok.00035278
identifier: urn:nbn:de:bsz:16-heidok-352781
identifier:   Rosner, Michael Karl  (2024) Electronic energy level determination in the 4f-subshell in highly charged lead and the 5d-subshell in highly charged bismuth by atomic structure calculation-assisted optical spectroscopy.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/35278/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng