T.J. Procter

TL;DR: The observed series of Rydberg states enabled the first determination of the ionization potential of the astatine atom, 9.31751(8) eV, which serves as a benchmark for quantum chemistry calculations of the properties of ast atine as well as for the theoretical prediction of the ionship potential of superheavy element 117.

TL;DR: Through a comparison of the measured charge radii with predictions from the spherical droplet model, it is concluded that the ground-state wave function remains spherical down to (205)Fr, with a departure observed in (203)Fr (N=116).

TL;DR: The CRIS setup at CERN-ISOLDE is a laser spectroscopy experiment dedicated to the high-resolution study of the spin, hyperfine structure and isotope shift of radioactive nuclei with low production rates (a few per second).

TL;DR: In this paper, the authors combine laser excitation and ionization of atoms with tracking and analysis of the associated alpha decay, a novel technique demonstrates its capability to probe with high sensitivity the hyperfine structure of exotic nuclear isotopes and determine their fundamental nuclear observables.

TL;DR: The magnetic dipole moments and changes in mean square charge radii of the neutron-rich 218m,219,229,231Fr isotopes were measured with the newly installed Collinear Resonance Ionization Spectroscopy (CRIS) beam line at the On-Line Isotope Mass Separator (ISOLDE), CERN, probing the 7s2S1/2 to 8p2P3/2 atomic transition as mentioned in this paper.