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Microscopic study of α clustering in the 9,10,11Be isotopes

✍ Scribed by P. Descouvemont

Book ID
104335070
Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
198 KB
Volume
699
Category
Article
ISSN
0375-9474

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✦ Synopsis

The 9,10,11 Be nuclei are described in a microscopic multicluster model involving α + α + n, α + α + n + n and α + α + n + n + n configurations, respectively. The effect of α clustering is shown to decrease from 9 Be to 11 Be. In 9 Be, we find 1/2 + , 1/2 -and 3/2 -bands which are well supported by experimental data. For 10 Be, in addition to the ground-state band, we predict 1 + and 1 -rotational bands; α + 6 He cluster states are also discussed. A 1/2 + band is obtained in 11 Be, but negative-parity states do not present significant clustering. The existence of a 3/2 -band, suggested recently, is therefore not supported by the model.

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✍ P. Descouvemont 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 158 KB

The 15,17,19 C neutron-rich isotopes are investigated with the Generator Coordinate Method, involving 14,16,18 C + n configurations. Core excitations are taken into account and are shown to play an important role for several states. The 15 C nucleus is used as a test case. Analysis of spectroscopic