Shell-model calculations in the sd shell. I. Energy spectra

Transient field measurements of g-factors for 28Si and 30Si

“…5, 9) and present work] and elsewhere 24,22). This establishes the usefulness of the method for short-lived states in light nuclei.…”

Intruder negative-parity states of neutron-richSi33

“…The region of neutron-rich nuclei around N = 20 continues to be the subject of active research, both experimental and theoretical; this is the region in which the breaking of a shell closure far from stability was first observed in 32 12 Mg 20 [1][2][3], and interpreted within a shell-model context as arising from a two particle-two hole intruder configuration [4,5]. 34 14 Si 20 lies outside the island of inversion and, although only two protons removed from the highly deformed 32 12 Mg 20 nucleus, is a spherical N = 20 closed-shell nucleus in its ground state.…”

Quasi-SU(3) truncation scheme for odd–even and odd–odd sd-shell nuclei

“…4 shows the results obtained for the low energy spectra of 23 Na, calculated using the Hamiltonian parameters listed in the second row of Table 2, and the Hilbert space described above. This is compared with the experimental data [20], presented in the second column, (λ π , µ π ) (λ ν , µ ν ) (λ, µ) total (4,1)1/2 (4,2)0 (8,3)1/2 (9,1)1/2 (6,4)1/2 (7,2)1/2 (4,1)1/2 (5,0)1 (9,1)1/2,3/2 (7,2)1/2,3/2 (4,1)1/2 (2,3)1 (6,4)1/2,3/2 (7,2)1/2,3/2 (2,2)1/2 (4,2)0 (6,4)1/2 (7,2)1/2 (4,1)1/2 (3,1)0,1 (7,2)1/2,3/2 (2,2)1/2 (5,0)1 (7,2)1/2,3/2 (3,0)3/2 (4,2)0 (7,2)3/2 and with full shell model calculations performed by the Glasgow group [25] (third column). The ground state, as well as some excited states are well described using the quasi SU(3) truncation scheme.…”

“…(λ π , µ π )S π C 2 (λ ν , µ ν )S ν C 2 (4,2)0 46 (5,1)1/2 49 (5,0)1 40 (2,4)1/2 46 (2,3)1 34 (3,2)1/2,3/2 34 (0,4)0 28 (4,0)1/2 28 (3,1)0,1 25 (1,3)1/2,3/2 25 (1,2)1,2 16 (2,1)1/2,3/2 16 (2,0)0 10 (0,2)1/2,5/2 10 (0,1)1 4 (1,0)3/2 4 Table 8: Irreps, spins and C 2 values for protons and neutrons in 25 Mg.…”