Phys.Rev. C 100, 044321 (2019)

E.Verstraelen, A.Teigelhofer, W.Ryssens, F.Ames, A.Barzakh, M.Bender, R.Ferrer, S.Goriely, P.-H.Heenen, M.Huyse, P.Kunz, J.Lassen, V.Manea, S.Raeder, P.Van Duppen

Search for octupole-deformed actinium isotopes using resonance ionization spectroscopy

NUCLEAR MOMENTS ^{225,226,227,228,229}Ac; measured hyperfine spectra, and isotope shifts by probing a ²D_3/2 to ⁴P_5/2 atomic transition using in-source resonance ionization spectroscopy at the ISAC facility in TRIUMF, where the actinium isotopes were produced in irradiating UC_x with 480-MeV proton beam, and ionized by TRIUMF Resonant Ionization Laser Ion Source (TRILIS); deduced mean-square charge radii, hyperfine parameters, magnetic dipole moments, configurations; calculated β₂₀ and β₃₀ deformation parameters using SLy5s1, BSk31, and DD-MEB2 interactions. Comparison with previous experimental measurements, and with self-consistent calculations using energy density functionals SLy5s1, BSk31, and DD-MEB1. Z=82-89, N=120-150; systematics of experimental mean-square charge radii, and odd-even staggering parameter, and compared with theoretical calculations.

doi: 10.1103/PhysRevC.100.044321