Observation of the distribution of nuclear magnetization in a molecule

Abstract

Rapid progress in the experimental control and interrogation of molecules, combined with developments in precise calculations of their structure, are enabling new opportunities in the investigation of nuclear and particle physics phenomena. Molecules containing heavy, octupole-deformed nuclei such as radium are of particular interest for such studies, offering an enhanced sensitivity to the properties of fundamental particles and interactions. Here, we report precision laser spectroscopy measurements and theoretical calculations of the structure of the radioactive radium monofluoride molecule, ${}^{225}$Ra${}^{19}$F. Our results allow fine details of the short-range electron-nucleus interaction to be revealed, indicating the high sensitivity of this molecule to the distribution of magnetization, currently a poorly constrained nuclear property, within the radium nucleus. These results provide a direct and stringent test of the description of the electronic wavefunction inside the nuclear volume, highlighting the suitability of these molecules to investigate subatomic phenomena.

References in corpus (24)

• A new bound on the electron's electric dipole moment
• Laser Spectroscopy for the Study of Exotic Nuclei
• Combined 4-component and relativistic pseudopotential study of ThO for the electron electric dipole moment search
• Ab initio study of radium monofluoride, RaF, as a candidate to search for P- and T,P- violation effects
• Theoretical study of thorium monoxide for the electron electric dipole moment search, II: Electronic properties of $H^3{\Delta }_1$ in ThO
• Opportunities for Fundamental Physics Research with Radioactive Molecules
• Theoretical study of ThF${}^{+}$ in the search for T,P-violation effects: Effective state of a Th atom in ThF${}^{+}$ and ThO compounds
• Isotope Shifts of Radium Monofluoride Molecules
• Electron correlation and nuclear charge dependence of parity-violating properties in open-shell diatomic molecules
• Hyperfine structure of the metastable 3P2 state of alkaline earth atoms as an accurate probe of nuclear magnetic octupole moments
• Study of the scalar-pseudoscalar interaction in the francium atom
• Ground-state hyperfine splitting for Rb, Cs, Fr, Ba^+, and Ra^+
• Nuclear magnetization distribution effect in molecules: Ra${}^{+}$ and RaF hyperfine structure
• Approaching meV level for transition energies in the radium monofluoride molecule RaF and radium cation Ra${}^{+}$ by including quantum-electrodynamics effects
• Electric dipole moments of actinide atoms and RaO molecule
• Merits of Heavy-Heavy Molecules for Electron Electric Dipole Moment Searches
• Calculations of Time-Reversal Symmetry Violation Sensitivity Parameters Based on Analytic Relativistic Coupled-Cluster Gradient Theory
• Accurate \textit{ab initio} calculations of RaF electronic structure indicate the need for more laser-spectroscopical measurements
• Benchmarking of the Fock space coupled cluster method and uncertainty estimation: Magnetic hyperfine interaction in the excited state of BaF
• Empirical determination of the Bohr-Weisskopf effect in cesium and improved tests of precision atomic theory in searches for new physics
• Effect of nuclear magnetization distribution within the Woods-Saxon model: Hyperfine splitting in neutral Tl
• Enhanced Magnetic Quadrupole Moments in Nuclei with Octupole Deformation and their CP-violating effects in molecules
• Hyperfine structure of ${}^{173}{\mathrm{Yb}}^{+}$: toward resolving the ${}^{173}\mathrm{Yb}$ nuclear octupole moment puzzle
• Refined nuclear magnetic dipole moment of rhenium: ${}^{185}$Re and ${}^{187}$Re

Cited by in corpus (4)

• Production and spectroscopy of cold radioactive molecules
• Ionization potential of radium monofluoride
• Commissioning and Full Realization of the PLASEN System at BRIF
• Radioactive Molecules as Laboratories of Fundamental Physics