Details

Autor(en) / Beteiligte

• Gai, Moshe

Titel

Conjectured Hole States (7Be, 19F) and p-h states (8Be) of the CSM

Ist Teil von

• Journal of physics. Conference series, 2023-03, Vol.2453 (1), p.12024

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2023

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Abstract The remarkable success of the Algebraic Cluster Model (ACM) to describe the N=Z even-even light nuclei, 8 Be, 12 C, 16 O and 20 Ne, and the neighbouring nuclei with one particle added, 9 Be, 9 B, 13 C, 21 Ne and 21 Na, using the Cluster Shell Model (CSM), lead us to consider the phenomenology of data on conjectured hole states of the CSM in 7 Be and 19 F, and conjectured high lying particle-hole states (p-h) in 8 Be. We propose the first application of the Cluster Shell Model (CSM) of Della Rocca and Iachello to conjectured p-h states in 8 Be. We demonstrate a few essential phenomenological features of the CSM in 8 Be: 1) All predicted conjectured p-h states of the CSM, and only the predicted p-h states, are observed near thresholds and up to 19.5 MeV in 8 Be. 2) The states are observed in the predicted order, with positive parity states below negative parity states. 3) Some of the conjectured p-h states are already known to have the predicted rotational structure of the deformed p-h states. 4) The rotational structures observed at high excitations in the conjectured p-h bands in 8 Be, resemble the ground state bands of 8 Be, 9 Be and 9 B, with similar moment of inertia. Based on these observations we contemplate new measurements of the spectroscopy of 8 Be at energies above 19.5 MeV, where our knowledge of states in 8 Be is incomplete. We examine the observed B(M1)s and B(E2)s in these nuclei and contemplate a measurement of the B(E2) of the iso-baric Analog transition in 8 Li.