Article
Proton inelastic scattering reveals deformation in 8He
Author/s | Holl, Matthias
Kanungo, Rituparna Sun, Zhonghao Hagen, Gaute Lay Valera, José Antonio ![]() ![]() ![]() ![]() ![]() ![]() ![]() Moro Muñoz, Antonio Matías ![]() ![]() ![]() ![]() ![]() ![]() ![]() Williams, M. |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2021 |
Deposit Date | 2022-01-14 |
Published in |
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Abstract | A measurement of proton inelastic scattering of 8He at 8.25A MeV at TRIUMF shows a resonance at 3.54(6) MeV with a width of 0.89(11) MeV. The energy of the state is in good agreement with coupled cluster and no-core shell ... A measurement of proton inelastic scattering of 8He at 8.25A MeV at TRIUMF shows a resonance at 3.54(6) MeV with a width of 0.89(11) MeV. The energy of the state is in good agreement with coupled cluster and no-core shell model with continuum calculations, with the latter successfully describing the measured resonance width as well. Its differential cross section analyzed with phenomenological collective excitation form factor and microscopic coupled reaction channels framework consistently reveals a large deformation parameter = 0.40(3), consistent with no-core shell model predictions of a large neutron deformation. This deformed double-closed shell at the neutron drip-line opens a new paradigm. |
Funding agencies | Oficina de Física Nuclear, Departamento de Energía de los EE. UU. Ministerio de Ciencia, Innovación y Universidades (MICINN). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) European Union (UE) |
Project ID. | DE-FG02-96ER40963
![]() DE-SC0018223 ![]() FIS2017-88410-P ![]() Horizonte 2020, n.º 654002 ![]() |
Citation | Holl, M., Kanungo, R., Sun, Z., Hagen, G., Lay Valera, J.A., Moro Muñoz, A.M. y Williams, M. (2021). Proton inelastic scattering reveals deformation in 8He. Physics Letters B, 822, 136710. |
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