| 1. |
- Niemi, MEK, et al.
(author)
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- 2021
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swepub:Mat__t
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| 2. |
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| 3. |
- Abbafati, Cristiana, et al.
(author)
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- 2020
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Journal article (peer-reviewed)
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| 4. |
- Ovejas, J. D., et al.
(author)
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Halo effects in the low-energy scattering of 15 C with heavy targets
- 2020
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In: Acta Physica Polonica, Series B.. - 1509-5770 .- 0587-4254. ; 51:3, s. 731-736
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Journal article (peer-reviewed)abstract
- The neutron-rich carbon isotope 15C was postulated to be a halo nucleus (Sn = 1215 keV, S2n = 9395 keV) according to different high-energy experiments. If so, it would be the only halo nucleus exhibiting a "pure" s-wave structure of the ground state. At low collision energies, the effect of this halo structure should manifest as a strong absorption pattern in the angular distribution of the elastic cross section, with a total suppression of the nuclear rainbow due to the large neutron transfer and breakup probabilities, enhanced by the halo configuration. The IS619 experiment, carried out at the HIE-ISOLDE facility at CERN (Switzerland), is the first dynamical study of this nucleus at energies around the Coulomb barrier. It aims to probe the halo structure via the measurement of the elastic cross section on a high-Z 208Pb target. Preliminary results of the elastic cross section are discussed and compared to Optical Model calculations.
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| 5. |
- Ovejas, J. D., et al.
(author)
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Study of the scattering of 15C at energies around the Coulomb barrier
- 2020
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In: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 1643:1
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Conference paper (peer-reviewed)abstract
- The neutron rich carbon isotope 15C is the only known case of an almost "pure"2s1/2 single-neutron halo ground state configuration. At collision energies around the Coulomb barrier the reaction dynamics is expected to be dominated by single neutron transfer and breakup. To investigate these effects, we have measured the scattering of 15C with a 208Pb target at 65 MeV at the HIE-ISOLDE facility in CERN (Geneva, Switzerland). The preliminary data demonstrates the presence of a strong long-range absorption pattern in the angular distribution of the elastic cross section. The results are discussed in the framework of Optical Model calculations.
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| 6. |
- Távora, V.G., et al.
(author)
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Strong coupling effects on near-barrier 15C + 208Pb elastic scattering
- 2024
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In: Physics Letters B. - 0370-2693. ; 855
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Journal article (peer-reviewed)abstract
- The presence of a neutron halo in 15C has been demonstrated in several reaction experiments at intermediate energies. In the present study, the dynamical effects of this structure are observed for the first time at Coulomb barrier energies in the 15C + 208Pb quasi-elastic scattering at MeV, measured at the HIE-ISOLDE facility, CERN using the high-granularity detector array GLORIA. A combined continuum discretised coupled channels and coupled reaction channels calculation describes the data well and significant coupling effects due both to breakup and single-neutron stripping are identified.
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| 7. |
- Távora, V. G., et al.
(author)
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Strong coupling effects on near-barrier 15C + 208Pb elastic scattering
- 2024
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In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - 0370-2693. ; 855
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Journal article (peer-reviewed)abstract
- The presence of a neutron halo in 15C has been demonstrated in several reaction experiments at intermediate energies. In the present study, the dynamical effects of this structure are observed for the first time at Coulomb barrier energies in the 15C + 208Pb quasi-elastic scattering at Elab=65 MeV, measured at the HIE-ISOLDE facility, CERN using the high-granularity detector array GLORIA. A combined continuum discretised coupled channels and coupled reaction channels calculation describes the data well and significant coupling effects due both to breakup and single-neutron stripping are identified.
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| 8. |
- Pietro, A Di, et al.
(author)
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Proton halo effects in the 8B+64Zn collision around the Coulomb barrier
- 2023
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In: Journal of Physics: Conference Series. - 1742-6596 .- 1742-6588. ; 2586:1, s. 012079-012079
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Journal article (peer-reviewed)abstract
- The 8B+64Zn reaction at 38.5 MeV has been studied at HIE-ISOLDE CERN to investigate proton halo effect on the reaction dynamics. For the first time it was used the only existing post-accelerated 8B beam. The measured elastic scattering angular distribution showed a small suppression of the Coulomb-nuclear interference peak, opposite to what observed for the one-neutron halo nucleus 11Be on the same target where a large suppression was observed instead. Inclusive angular and energy distributions of breakup fragments were also measured showing that, both, elastic and non-elastic breakup contribute. The presence of the additional Coulomb interactions halo-core and halo-target in 8B makes the reaction dynamics in this proton-halo nucleus different than the neutron-halo case. © 2023 Institute of Physics Publishing. All rights reserved.
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| 9. |
- Spartà, R., et al.
(author)
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Probing proton halo effects in the 8 B+ 64 Zn collision around the Coulomb barrier
- 2021
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In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 820
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Journal article (peer-reviewed)abstract
- Proton halo effects in the 8B+64Zn reaction at an energy around 1.5 times the Coulomb barrier have been studied at HIE-ISOLDE CERN using, for the first time, the only existing postaccelerated 8B beam. This, together with the use of a high granularity and large solid angle detection system, allowed for a careful mapping of the elastic angular distribution, especially in the Coulomb-nuclear interference region. Contrary to what is observed for the one-neutron halo nucleus 11Be on the same target in a similar energy range, the analysis of the elastic scattering angular distribution shows only a modest suppression of the Coulomb-nuclear interference peak, with no remarkable enhancement of the total reaction cross-section. Inclusive angular and energy distributions of 7Be produced in direct reaction processes have also been measured. The comparison of these data with the results of theoretical calculations for the elastic and non-elastic breakup contributions indicate that both processes are important. Overall, the experimental data suggest a 8B collision dynamics at the barrier very different from the one of neutron halo nuclei, showing only modest effects of coupling to continuum. This behaviour can be interpreted as due to the presence of the additional Coulomb interactions halo-core and halo-target together with the presence of the centrifugal barrier felt by the valence proton of 8B.
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| 10. |
- De Maria, C., et al.
(author)
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The UBORA E-Infrastructure for Open Source Innovation in Medical Technology
- 2020
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In: XV Mediterranean Conference on Medical and Biological Engineering and Computing – MEDICON 2019. - Cham : Springer. ; , s. 878-882
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Conference paper (peer-reviewed)abstract
- The development of medical devices with open source and collaborative design methodologies has the potential to increase the access to medical technologies, thanks to a feasible reduction of design, management, maintenance, and repairing costs linked to the open access of device blueprints. UBORA is an e-infrastructure for the co-design of open source medical devices, which promotes the compliance with internationally recognized quality standards and regulations for safety and efficacy of devices, taking the EN ISO 13485:2016 and the EU MDR 2017/745 as inspiration. UBORA guides the user through a systematic design process, from the identification of clinical needs, of risks class and relevant standards for the device, and provides project management tools, including a repository, finalized to the preparation of the pre-production device dossier. The process is supervised by expert mentors, which ensure that safety and efficacy criteria are fulfilled. The UBORA e-infrastructure is in line with the 2030 Agenda for the Sustainable Development Goals, promoting and strengthening the initiatives of an international community of designers, healthcare providers and policy-makers, toward the reduction of inequalities in the access to medical devices.
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