Details
| Original language | English |
|---|---|
| Article number | 150801 |
| Journal | Physical Review Letters |
| Volume | 114 |
| Issue number | 15 |
| Publication status | Published - 16 Apr 2015 |
Abstract
We measure optical spectra of Nd-like W, Re, Os, Ir, and Pt ions of particular interest for studies of a possibly varying fine-structure constant. Exploiting characteristic energy scalings we identify the strongest lines, confirm the predicted 5s-4f level crossing, and benchmark advanced calculations. We infer two possible values for optical M2/E3 and E1 transitions in Ir17+ that have the highest predicted sensitivity to a variation of the fine-structure constant among stable atomic systems. Furthermore, we determine the energies of proposed frequency standards in Hf12+ and W14+.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Letters, Vol. 114, No. 15, 150801, 16.04.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Identification of the predicted 5s-4f level crossing optical lines with applications to metrology and searches for the variation of fundamental constants
AU - Windberger, A.
AU - Crespo López-Urrutia, José R.
AU - Bekker, Hendrik
AU - Oreshkina, Natalia S.
AU - Berengut, Julian C.
AU - Bock, V.
AU - Borschevsky, Anastasia
AU - Dzuba, Vladimir A.
AU - Eliav, Ephraim
AU - Harman, Zoltán
AU - Kaldor, Uzi
AU - Kaul, S.
AU - Safronova, Ulyana Ivanovna
AU - Flambaum, V. V.
AU - Keitel, Christoph H.
AU - Schmidt, Piet Oliver
AU - Ullrich, Joachim Hermann
AU - Versolato, Oscar O.
PY - 2015/4/16
Y1 - 2015/4/16
N2 - We measure optical spectra of Nd-like W, Re, Os, Ir, and Pt ions of particular interest for studies of a possibly varying fine-structure constant. Exploiting characteristic energy scalings we identify the strongest lines, confirm the predicted 5s-4f level crossing, and benchmark advanced calculations. We infer two possible values for optical M2/E3 and E1 transitions in Ir17+ that have the highest predicted sensitivity to a variation of the fine-structure constant among stable atomic systems. Furthermore, we determine the energies of proposed frequency standards in Hf12+ and W14+.
AB - We measure optical spectra of Nd-like W, Re, Os, Ir, and Pt ions of particular interest for studies of a possibly varying fine-structure constant. Exploiting characteristic energy scalings we identify the strongest lines, confirm the predicted 5s-4f level crossing, and benchmark advanced calculations. We infer two possible values for optical M2/E3 and E1 transitions in Ir17+ that have the highest predicted sensitivity to a variation of the fine-structure constant among stable atomic systems. Furthermore, we determine the energies of proposed frequency standards in Hf12+ and W14+.
UR - http://www.scopus.com/inward/record.url?scp=84929587551&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.114.150801
DO - 10.1103/PhysRevLett.114.150801
M3 - Article
AN - SCOPUS:84929587551
VL - 114
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 15
M1 - 150801
ER -