| Autor: |
M. Freer, N.I. Ashwood, N.L. Achouri, W.N. Catford, N. Curtis, F. Delaunay, H. Al Falou, F.M. Marqués, T. Munoz-Britton, N.A. Orr, R. Raabe, N. SoiÄ, J.S. Thomas, C. Wheldon, V.A. Ziman |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Physics Letters B, Vol 775, Iss , Pp 58-62 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
0370-2693 |
| DOI: |
10.1016/j.physletb.2017.10.063 |
| Popis: |
Scattering of 8He from 4He has been performed through the coincident detection of the scattered particles using a silicon array within a helium-4 gas volume with a 8He beam. This permitted the reconstruction of the interaction probability as a function of position within the gas and hence the excitation function to be calculated together with the angular distribution of the products. These measurements also enabled the reconstruction of the two-neutron transfer to 6Heâ+â6He. The measurements provide the first characterisation of the scattering of the α+4n, 8He, halo nucleus from 4He and the 2n-transfer to populate the symmetric final state. The results indicate the presence of a L=4 component at excitation energies of 14â15 MeV, consistent with a broad (â¼1 MeV) JÏ=4+ resonance. These measurements would agree with generalized two-centre cluster model (GTCM) calculations indicating a cluster, or molecular, structure predicted at this energy. Keywords: Nuclear clustering, Molecular states, Light nuclei |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect