Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12Be
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 excita...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317308754 |
| _version_ | 1819162355153502208 |
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| author | 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 |
| author_facet | 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 |
| author_sort | M. Freer |
| collection | DOAJ |
| description | 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 |
| first_indexed | 2024-12-22T17:26:55Z |
| format | Article |
| id | doaj.art-8425acea17dc4c69a3a3da08ee08b1be |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-22T17:26:55Z |
| publishDate | 2017-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-8425acea17dc4c69a3a3da08ee08b1be2022-12-21T18:18:42ZengElsevierPhysics Letters B0370-26932017-12-017755862Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12BeM. Freer0N.I. Ashwood1N.L. Achouri2W.N. Catford3N. Curtis4F. Delaunay5H. Al Falou6F.M. Marqués7T. Munoz-Britton8N.A. Orr9R. Raabe10N. SoiÄ11J.S. Thomas12C. Wheldon13V.A. Ziman14School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; Corresponding author.School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UKLPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, FranceSchool of Electronics and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UKSchool of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UKLPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, FranceLPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, FranceLPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, FranceSchool of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UKLPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, FranceGANIL, Boulevard Henri Becquerel, 14000 Caen, FranceRudjer BoÅ¡koviÄ Institute, Department of Experimental Physics, BijeniÄka 54, HR-10000 Zagreb, CroatiaSchool of Electronics and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UKSchool of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UKSchool of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UKScattering 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 nucleihttp://www.sciencedirect.com/science/article/pii/S0370269317308754 |
| spellingShingle | 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 Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12Be Physics Letters B |
| title | Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12Be |
| title_full | Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12Be |
| title_fullStr | Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12Be |
| title_full_unstemmed | Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12Be |
| title_short | Elastic scattering of 8Heâ+â4He and two-neutron transfer and the influence of resonances in 12Be |
| title_sort | elastic scattering of 8hea a4he and two neutron transfer and the influence of resonances in 12be |
| url | http://www.sciencedirect.com/science/article/pii/S0370269317308754 |
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