Determine the charge-radius behavior of proton-emitting 147Tm

Determine the charge-radius behavior of the proton-emitting isotope 147Tm, which is not yet known and is relevant to nuclear-structure studies near the proton drip line.

Background

The paper motivates laser spectroscopy of short-lived, neutron-deficient thulium isotopes, particularly those near the N=82 shell closure and toward the proton drip line. Isotope shifts measured by laser spectroscopy can provide information about nuclear charge radii, while hyperfine splittings yield magnetic dipole and electric quadrupole moments. The charge-radius evolution of the proton-emitting isotope 147Tm is identified as an unresolved quantity.