Enhanced sensitivity to the fine-structure constant variation in Th IV atomic clock transition

Abstract

Our calculations have shown that the 5f_5/2-7s_1/2 23131 cm^{-1} transition from the ground state in the ion Th^{3+} is very sensitive to the temporal variation of the fine structure constant alpha (q=-75300 cm^{-1}). The line is very narrow, the ion has been trapped and laser cooled and the positive shifter line 5f_5/2-5f_7/2 4325 cm^{-1} (q=+2900 cm^{-1}) may be used as a reference. A comparison may also be made with a positive shifter in another atom or ion. This makes Th^{3+} a good candidate to search for the alpha variation.

References in corpus (7)

• Revision of VLT/UVES constraints on a varying fine-structure constant
• Dependence of nuclear binding on hadronic mass variation
• Comment on "Limits on the Time Variation of the Electromagnetic Fine-Structure Constant in the Low Energy Limit from Absorption Lines in the Spectra of Distant Quasars"
• Variation of fundamental constants: theory and observations
• How changing physical constants and violation of local position invariance may occur?
• Mid- and far-infrared fine-structure line sensitivities to hypothetical variability of the fine-structure constant
• Transition frequency shifts with fine-structure constant variation for Yb II

Cited by in corpus (10)

• Varying constants, Gravitation and Cosmology
• Enhanced laboratory sensitivity to variation of the fine-structure constant using highly-charged ions
• Hole transitions in multiply-charged ions for precision laser spectroscopy and searching for alpha-variation
• Highly charged ions with E1, M1, and E2 transitions within laser range
• Sensitivity of ${}^{229}$Th nuclear clock transition to variation of the fine-structure constant
• Effect of atomic electrons on 7.6 eV nuclear transition in ${}^{229}$Th${}^{3+}$
• Enhanced violation of the Lorentz invariance and Einstein's equivalence principle in nuclei and atoms
• Rotational spectrum of molecular ion NH^+ as a probe for alpha- and m_e/m_p-variation
• Sympathetic cooling of trapped Th3+ alpha-recoil ions for laser spectroscopy
• The Os${}^{16+}$ and Ir${}^{17+}$ ions as candidates for accurate optical clock sensitive to physics beyond standard model