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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. (Publisher's Version)
In: Atoms, 10 (1), MDPI, e-ISSN 2218-2004,
DOI: 10.26083/tuprints-00021018,
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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling
Language: English
Abstract:

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.

Journal or Publication Title: Atoms
Journal volume: 10
Issue Number: 1
Publisher: MDPI
Collation: 10 Seiten
Uncontrolled Keywords: opacity, atomic data, kilonovae, oscillator strengths, neutron stars
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics > Theoretische Kernphysik
Date Deposited: 11 Apr 2022 11:13
Last Modified: 11 Apr 2022 11:13
DOI: 10.26083/tuprints-00021018
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-210182
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21018
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