Nuclear Data Sheets for A=219

Single-particle states and parity doublets in odd- Z Ac221 and Pa225 from Parr1, Smith2, Greenlees3 et al. 2022Phys. Rev. C5000View full textAdd to dashboardCite

“…Experimentally established ground-state spin and parity assignments are taken from Refs. [25,[31][32][33][34][35][36][37] as well as the present work, and values of the specific proton orbitals assigned to the ground-state configurations for isotopes beyond the N = 130 transitional region are given. The boundary lines define the region of odd-A nuclei in which the ground-state assignments are consistent with predictions from asymmetrically deformed nuclearpotential shell models; these are predominantly taken from Ref.…”

“…The experimentally determined spin and parity assignments of the ground states are given as well as the values of the orbitals populated by the odd protons for nuclei beyond the N = 130 transitional region. All information was taken from compilations and evaluations of nuclear data [25,[31][32][33][34][35][36][37], and references therein. On the figure, boundary lines are given which define the region of odd-A nuclei in which the ground-state spins and parities are consistent with the lowest-lying orbitals calculated with the addition of an octupole deformation.…”

Level structure of Ac221 and Fr217 from decay spectroscopy, and reflection asymmetry in Rey-Herme1, Raggio2, Vandebrouck3 et al. 2023Phys. Rev. C2000View full textAdd to dashboardCite

“…A. General considerations α-particle energy calibrations were performed using online data (using the tabulated α-decay energies of 225 Th and 226 Th, as well as 221 Ac [34][35][36][37]) to take into account energy loss in the implantation foil. Electron energy calibrations were also performed with in-beam data, using α-electron coincidences to clearly identify electron peaks originating from the 225 Th α decay.…”

KATRIN background due to surface radioimpurities

“…The decay chain of 223 Ra includes four 𝛼-decays [17][18][19][20]. The 228 Th decay chain includes five 𝛼-decays [21][22][23][24][25].…”