Details
| Original language | English |
|---|---|
| Article number | 144018 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 48 |
| Issue number | 14 |
| Publication status | Published - 28 May 2015 |
Abstract
We investigated Pm-, Nd-, and Pr-like spectra in the extreme ultra-violet region around 20 nm of Pt, Ir, Os, and Re (Z = 78-75) produced in the Heidelberg electron beam ion trap. Identification of the transitions was supported by several theoretical calculations, including collisional radiative modeling of the observed spectra. Special attention is given to the identifications of the alkaline-like - resonance lines in promethium-like highly charged ions. Previous identifications of these lines have been tentative at best due to disagreements with theory and doubts about the experimental charge state identifications. Our experimental results for the - wavelengths are accurate at the 0.005%-level. Understanding the level-structure of ions near the - level crossing is of particular importance for future searches of a possible fine-structure constant variation, and new optical clocks.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 48, No. 14, 144018, 28.05.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Identifications of [equation presented] and [equation presented] EUV transitions of promethium-like Pt, Ir, Os and Re
AU - Bekker, Hendrik
AU - Versolato, Oscar O.
AU - Windberger, A.
AU - Oreshkina, Natalia S.
AU - Schupp, Ruben
AU - Baumann, Thomas M.
AU - Harman, Zoltán
AU - Keitel, Christoph H.
AU - Schmidt, Piet Oliver
AU - Ullrich, Joachim Hermann
AU - López-Urrutia, José R.Crespo
PY - 2015/5/28
Y1 - 2015/5/28
N2 - We investigated Pm-, Nd-, and Pr-like spectra in the extreme ultra-violet region around 20 nm of Pt, Ir, Os, and Re (Z = 78-75) produced in the Heidelberg electron beam ion trap. Identification of the transitions was supported by several theoretical calculations, including collisional radiative modeling of the observed spectra. Special attention is given to the identifications of the alkaline-like - resonance lines in promethium-like highly charged ions. Previous identifications of these lines have been tentative at best due to disagreements with theory and doubts about the experimental charge state identifications. Our experimental results for the - wavelengths are accurate at the 0.005%-level. Understanding the level-structure of ions near the - level crossing is of particular importance for future searches of a possible fine-structure constant variation, and new optical clocks.
AB - We investigated Pm-, Nd-, and Pr-like spectra in the extreme ultra-violet region around 20 nm of Pt, Ir, Os, and Re (Z = 78-75) produced in the Heidelberg electron beam ion trap. Identification of the transitions was supported by several theoretical calculations, including collisional radiative modeling of the observed spectra. Special attention is given to the identifications of the alkaline-like - resonance lines in promethium-like highly charged ions. Previous identifications of these lines have been tentative at best due to disagreements with theory and doubts about the experimental charge state identifications. Our experimental results for the - wavelengths are accurate at the 0.005%-level. Understanding the level-structure of ions near the - level crossing is of particular importance for future searches of a possible fine-structure constant variation, and new optical clocks.
UR - http://www.scopus.com/inward/record.url?scp=84936817958&partnerID=8YFLogxK
U2 - 10.1088/0953-4075/48/14/144018
DO - 10.1088/0953-4075/48/14/144018
M3 - Article
AN - SCOPUS:84936817958
VL - 48
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
SN - 0953-4075
IS - 14
M1 - 144018
ER -