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Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling

Silva, Ricardo F. ; Sampaio, Jorge M. ; Amaro, Pedro ; Flörs, Andreas ; Martínez-Pinedo, Gabriel ; Marques, José P. (2022)
Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling.
In: Atoms, 2022, 10 (1)
doi: 10.26083/tuprints-00021018
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling
Language: English
Date: 11 April 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Atoms
Volume of the journal: 10
Issue Number: 1
Collation: 10 Seiten
DOI: 10.26083/tuprints-00021018
Corresponding Links:
Origin: Secondary publication DeepGreen

The detection of gravitational waves and electromagnetic signals from the neutron star merger GW170817 has provided evidence that these astrophysical events are sites where the r-process nucleosynthesis operates. The electromagnetic signal, commonly known as kilonova, is powered by the radioactive decay of freshly synthesized nuclei. However, its luminosity, colour and spectra depend on the atomic opacities of the produced elements. In particular, opacities of lanthanides and actinides elements, due to their large density of bound–bound transitions, are fundamental. The current work focuses on atomic structure calculations for lanthanide and actinide ions, which are important in kilonovae modelling of ejecta spectra. Calculations for Nd III and U III, two representative rare-earth ions, were achieved. Our aim is to provide valuable insights for future opacity calculations for all heavy elements. We noticed that the opacity of U III is about an order of magnitude greater than the opacity of Nd III due to a higher density of levels in the case of the actinide.

Uncontrolled Keywords: opacity, atomic data, kilonovae, oscillator strengths, neutron stars
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-210182
Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute of Nuclear Physics > Theoretische Kernphysik
Date Deposited: 11 Apr 2022 11:13
Last Modified: 14 Nov 2023 19:04
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21018
PPN: 500754586
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