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Experimental and th...
Experimental and theoretical studies of excited states in Ir
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- Kristiansson, Moa K. (author)
- Stockholms universitet,Stockholm University,Fysikum,Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden
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- Schiffmann, S. (author)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Université Libre de Bruxelles (ULB),Lund Univ, Dept Phys, Div Math Phys, Box 118, SE-22100 Lund, Sweden; Univ Libre Bruxelles ULB, Spect Quantum Chem & Atmospher Remote Sensing SQU, CP160-09, B-1050 Brussels, Belgium
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- Grumer, J. (author)
- Uppsala universitet,Uppsala University,Teoretisk astrofysik
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- Karls, Julia (author)
- University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden
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- de Ruette, Nathalie (author)
- Stockholms universitet,Stockholm University,European Spallation Source ERIC, Denmark,Fysikum,European Spallation Source ERIC (ESS), Sweden,Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden; European Spallat Source ERIC ESS, SE-22100 Lund, Sweden
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- Eklund, Gustav (author)
- Stockholms universitet,Stockholm University,Fysikum,Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden
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- Ideböhn, Veronica, 1992 (author)
- University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden
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- Gibson, N. D. (author)
- Denison University,Denison Univ, Dept Phys & Astron, Granville, OH 43023 USA
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- Brage, T. (author)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Dept Phys, Div Math Phys, Box 118, SE-22100 Lund, Sweden
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- Zettergren, Henning (author)
- Stockholms universitet,Stockholm University,Fysikum,Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden
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- Hanstorp, Dag, 1960 (author)
- University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden
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- Schmidt, Henning T. (author)
- Stockholms universitet,Stockholm University,Fysikum,Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden
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(creator_code:org_t)
- American Physical Society, 2021
- 2021
- English.
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In: Physical Review A. - : American Physical Society. - 2469-9926 .- 2469-9934. ; 103:6
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Abstract
Subject headings
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- The properties of atomic negative ions are to a large extent determined by electron-electron correlation which makes them an ideal testing ground for atomic many-body physics. In this paper, we present a detailed experimental and theoretical study of excited states in the negative ion of iridium. The ions were stored at cryogenic temperatures using the double electrostatic ion ring experiment facility at Stockholm University. Laser photodetachment was used to monitor the relaxation of three bound excited states belonging to the [Xe] 4f(14)5d(8)6s(2) ionic ground configuration. Our measurements show that the first excited state has a lifetime much longer than the ion-beam storage time of 1230 +/- 100 s. The binding energy of this state was measured to be 1.045 +/- 0.002 eV. The lifetimes of the second and third excited states were experimentally determined to be 133 +/- 10 and 172 +/- 35 ms, respectively. Multiconfiguration Dirac-Hartree-Fock calculations were performed in order to extract binding energies and lifetimes. These calculations predict the existence of the third excited bound state that was detected experimentally. The computed lifetimes for the three excited bound states agree well with the experimental results and allow for a clear identification of the detected levels.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- fine-structure
- negative-ions
- storage-ring
- transition
- lifetimes
- Optics
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Kristiansson, Mo ...
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Schiffmann, S.
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Grumer, J.
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Karls, Julia
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de Ruette, Natha ...
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Eklund, Gustav
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Ideböhn, Veronic ...
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Gibson, N. D.
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Brage, T.
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Zettergren, Henn ...
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Hanstorp, Dag, 1 ...
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Schmidt, Henning ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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Physical Review ...
- By the university
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University of Gothenburg
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Lund University
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Stockholm University
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Uppsala University