Artículo
Proton inelastic scattering reveals deformation in 8He
Autor/es | Holl, Matthias
Kanungo, Rituparna Sun, Zhonghao Hagen, Gaute Lay Valera, José Antonio Moro Muñoz, Antonio Matías Williams, M. |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2021 |
Fecha de depósito | 2022-01-14 |
Publicado en |
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Resumen | 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. |
Agencias financiadoras | 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) |
Identificador del proyecto | DE-FG02-96ER40963
DE-SC0018223 FIS2017-88410-P Horizonte 2020, n.º 654002 |
Cita | 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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