Phys.Rev. C 103, L011301 (2021)

Y.B.Wang, for the BRIF Collaboration

Direct observation of the exotic β - γ - α decay mode in the T_z = 1 nucleus ²⁰Na

RADIOACTIVITY ²⁰Na(EC), (β⁺), (β⁺α)[pure intense ISOL beam of ²⁰Na from ²⁴Mg(p, nα), E=100 MeV from Beijing HI-13 tandem accelerator]; measured decay products, Eβ⁺, Eγ, Iγ, Eα, Iα, γγ- and αγ-coin at the Beijing Radioactive Ion-beam facility. ²⁰Ne; deduced levels, J, π, isospin, EC and β⁺ feedings, logft, B(F), B(GT). ¹⁶O; deduced levels, J, π, β⁺-delayed α sequences. Comparison with shell model calculation with USDB interaction.

doi: 10.1103/PhysRevC.103.L011301