Publication

Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+

Bekker, H., Borschevsky, A., Harman, Z., Keitel, C. H., Pfeifer, T., Schmidt, P. O., Lopez-Urrutia, J. R. C. & Berengut, J. C., 11-Dec-2019, In : Nature Communications. 10, 7 p., 5651.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Bekker, H., Borschevsky, A., Harman, Z., Keitel, C. H., Pfeifer, T., Schmidt, P. O., ... Berengut, J. C. (2019). Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+. Nature Communications, 10, [5651]. https://doi.org/10.1038/s41467-019-13406-9

Author

Bekker, H. ; Borschevsky, A. ; Harman, Z. ; Keitel, C. H. ; Pfeifer, T. ; Schmidt, P. O. ; Lopez-Urrutia, J. R. Crespo ; Berengut, J. C. / Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+. In: Nature Communications. 2019 ; Vol. 10.

Harvard

Bekker, H, Borschevsky, A, Harman, Z, Keitel, CH, Pfeifer, T, Schmidt, PO, Lopez-Urrutia, JRC & Berengut, JC 2019, 'Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+', Nature Communications, vol. 10, 5651. https://doi.org/10.1038/s41467-019-13406-9

Standard

Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+. / Bekker, H.; Borschevsky, A.; Harman, Z.; Keitel, C. H.; Pfeifer, T.; Schmidt, P. O.; Lopez-Urrutia, J. R. Crespo; Berengut, J. C.

In: Nature Communications, Vol. 10, 5651, 11.12.2019.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Bekker H, Borschevsky A, Harman Z, Keitel CH, Pfeifer T, Schmidt PO et al. Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+. Nature Communications. 2019 Dec 11;10. 5651. https://doi.org/10.1038/s41467-019-13406-9


BibTeX

@article{b707eb316bc1416f80f36fcaee9e5343,
title = "Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+",
abstract = "Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of physics beyond the Standard Model are those which occur at rare orbital crossings where the shell structure of the periodic table is reordered. There are only three such crossings expected to be accessible in highly charged ions, and hitherto none have been observed as both experiment and theory have proven difficult. In this work we observe an orbital crossing in a system chosen to be tractable from both sides: Pr9+. We present electron beam ion trap measurements of its spectra, including the inter-configuration lines that reveal the sought-after crossing. With state-of-the-art calculations we show that the proposed nHz-wide clock line has a very high sensitivity to variation of the fine-structure constant, alpha, and violation of local Lorentz invariance; and has extremely low sensitivity to external perturbations.",
keywords = "GAUSSIAN-BASIS SET, PROGRAM, IONS, SPECTROSCOPY, ATOMS",
author = "H. Bekker and A. Borschevsky and Z. Harman and Keitel, {C. H.} and T. Pfeifer and Schmidt, {P. O.} and Lopez-Urrutia, {J. R. Crespo} and Berengut, {J. C.}",
year = "2019",
month = "12",
day = "11",
doi = "10.1038/s41467-019-13406-9",
language = "English",
volume = "10",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Detection of the 5p-4f orbital crossing and its optical clock transition in Pr9+

AU - Bekker, H.

AU - Borschevsky, A.

AU - Harman, Z.

AU - Keitel, C. H.

AU - Pfeifer, T.

AU - Schmidt, P. O.

AU - Lopez-Urrutia, J. R. Crespo

AU - Berengut, J. C.

PY - 2019/12/11

Y1 - 2019/12/11

N2 - Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of physics beyond the Standard Model are those which occur at rare orbital crossings where the shell structure of the periodic table is reordered. There are only three such crossings expected to be accessible in highly charged ions, and hitherto none have been observed as both experiment and theory have proven difficult. In this work we observe an orbital crossing in a system chosen to be tractable from both sides: Pr9+. We present electron beam ion trap measurements of its spectra, including the inter-configuration lines that reveal the sought-after crossing. With state-of-the-art calculations we show that the proposed nHz-wide clock line has a very high sensitivity to variation of the fine-structure constant, alpha, and violation of local Lorentz invariance; and has extremely low sensitivity to external perturbations.

AB - Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of physics beyond the Standard Model are those which occur at rare orbital crossings where the shell structure of the periodic table is reordered. There are only three such crossings expected to be accessible in highly charged ions, and hitherto none have been observed as both experiment and theory have proven difficult. In this work we observe an orbital crossing in a system chosen to be tractable from both sides: Pr9+. We present electron beam ion trap measurements of its spectra, including the inter-configuration lines that reveal the sought-after crossing. With state-of-the-art calculations we show that the proposed nHz-wide clock line has a very high sensitivity to variation of the fine-structure constant, alpha, and violation of local Lorentz invariance; and has extremely low sensitivity to external perturbations.

KW - GAUSSIAN-BASIS SET

KW - PROGRAM

KW - IONS

KW - SPECTROSCOPY

KW - ATOMS

U2 - 10.1038/s41467-019-13406-9

DO - 10.1038/s41467-019-13406-9

M3 - Article

VL - 10

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 5651

ER -

ID: 117898878