Low-lying states in the unbound<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">N</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>11</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>nucleus

Casarejos, E.; Angulo, C.; Woods, P. J.; Barker, F.C.; Descouvemont, Pierre; Aliotta, M.; Davinson, T.; Demaret, Paul; Gaelens, M.; Leleux, Pierre; Liu, Zhong; Loiselet, M.; Murphy, A. St. J.; Ninane, A.; Roberts, I.; Ryckewaert, G.; Schweitzer, J.S.; Vanderbist, F.

doi:10.1103/physrevc.73.014319

Cited by 30 publications

(40 citation statements)

References 42 publications

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“…This is indeed the case for 11 Be, where the ground state has J π = 1/2 + in contradiction with the shell-model prediction that the odd neutron should be in a p 1/2 state leading to J π = 1/2 − . This same inversion was then observed in 11 N, which is unbound to proton decay, and could be investigated by resonant elastic scattering with a 10 C beam [188,189].…”

Section: Low-energy Radioactivementioning

confidence: 86%

Elastic scattering, fusion, and breakup of light exotic nuclei

2016

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Abstract. The present status of fusion reactions involving light (A < 20) radioactive projectiles at energies around the Coulomb barrier (E < 10 MeV per nucleon) is reviewed, emphasizing measurements made within the last decade. Data on elastic scattering (providing total reaction cross section information) and breakup channels for the involved systems, demonstrating the relationship between these and the fusion channel, are also reviewed. Similarities and differences in the behavior of fusion and total reaction cross section data concerning halo nuclei, weakly-bound but less exotic projectiles, and strongly-bound systems are discussed. One difference in the behavior of fusion excitation functions near the Coulomb barrier seems to emerge between neutron-halo and proton-halo systems. The role of charge has been investigated by comparing the fusion excitation functions, properly scaled, for different neutron-and proton-rich systems. Possible physical explanations for the observed differences are also reviewed.

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Section: Low-energy Radioactivementioning

confidence: 86%

Elastic scattering, fusion, and breakup of light exotic nuclei

2016

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“…The radioactive beam loses energy traversing the target: the initial beam energy and target thickness are chosen in order to cover the centre-of-mass energies of interest. The method, widely applied in Louvain-la-Neuve and other RIB facilities [2,25,26,27,28], has been extended to study the ground and excited states of unbound nuclei, either directly or through their isobaric analogue states: for example 11 N [29] and 19 Na [30,31] in Louvain-la-Neuve, 7 He [32] at the TwinSol Facility of the Notre Dame University. In addition, using α particles as a target, the same method was applied to the investigation of the cluster structure of resonances in selected nuclei (section 4.2).…”

Section: Methodsmentioning

confidence: 99%

Radioactive ion beam physics at the cyclotron research centre Louvain-la-Neuve

Huyse¹,

Raabe²

2011

J. Phys. G: Nucl. Part. Phys.

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Abstract.The first beam of post-accelerated radioactive ions was realized in 1989 at the Louvainla-Neuve research facility. The method employed two coupled cyclotrons to produce, separate and re-accelerate the species of interest. Several technological challenges were solved in the process, to obtain pure and intense beams for use in nuclear physics research. Similarly, new techniques were developed and refined for the measurement of the nuclear reactions induced by the radioactive beams. The available energy range made the facility particularly suited for nuclear astrophysics studies, and important results were obtained in the determination of stellar reaction rates using beams of 7 Be, 13 N, 18 F, 18,19 Ne. A beam of 6 He ions was extensively used in studies of the nuclear structure (halos, molecular states) and dynamics (the reaction process at energies around the potential barrier).

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“…The hydrogen burning rate is strongly influenced by the proton capture reaction [4] . It has also been shown that the proton capture reaction is helpful for the investigation of nuclear spectroscopy and the production of proton-rich exotic nuclei [5] . Therefore it is very useful to investigate the dynamical processes involving the proton capture.…”

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confidence: 99%

Theoretical studies of proton capture reactions in A ∼ 25 proton-rich nuclei

Gao

et al. 2009

Sci. China Ser. G-Phys. Mech. Astron.

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The direct proton capture and resonance proton capture properties of stellar reactions 22 Mg(p,γ) 23 Al and 26 Si(p,γ) 27 P are studied by employing a mean-field potential obtained from the Skyrme-HartreeFock (SHF) model. Calculations with the SHF potential reproduce well the loosely-bound structure of the ground states as well as the widths of the resonant states in these nuclei. With the obtained potential we estimate the reaction rates of direct proton capture and resonance proton capture to nuclei 23 Al and 27 P. The effect of the 27 P loosely-bound structure on the S factor of the direct proton capture is also discussed.proton capture reaction, mean field potential, proton-rich nuclei, shell model Proton capture reaction is of increasing interest in nuclear physics as well as in astrophysics. The famous Carbon-Nitrogen-Oxygen cycle starts from the proton capture of 12 C. The nucleosynthesis of proton-rich heavy nuclides (that are usually called p-nuclei) proceeds mostly through the proton capture and/or photo nuclear reactions. P -nuclei with the mass number up to A ∼ 100 can also be produced by the rapid proton capture process (rpprocess) [1,2] . The rp-process is a sequence of (p, γ) reactions and β + decays that are responsible for the burning of hydrogen into heavier elements [3] . The hydrogen burning rate is strongly influenced by the proton capture reaction [4] . It has also been shown that the proton capture reaction is helpful for the investigation of nuclear spectroscopy and the production of proton-rich exotic nuclei [5] . Therefore it is very useful to investigate the dynamical processes involving the proton capture.Of special interest is the proton capture to exotic nuclei with loosely-bound s 1/2 proton. The recent experiment of the 16 O(p, γ) 17 F stellar reaction shows that the halo structure of the π1s 1/2 orbit in 17 F can significantly enhance the astrophysical S factor of the direct proton capture to the nucleus at low bombing energies [6] . In the nuclear chart, the nuclei, 17 F, 23 Al and 26,27,28 P, are among the lightest ones which may carry looselybound 1s 1/2 protons in the ground or low-lying states [6−22] . It remains unclear whether the looselybound structure of the Al and P isotopes affects the direct capture reaction property. Moreover, the 22 Mg(p, γ) 23 Al and 26 Si(p, γ) 27 P reactions are important for the understanding of the nucleosyn-

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Low-lying states in the unboundN11nucleus

Cited by 30 publications

References 42 publications

Elastic scattering, fusion, and breakup of light exotic nuclei

Elastic scattering, fusion, and breakup of light exotic nuclei

Radioactive ion beam physics at the cyclotron research centre Louvain-la-Neuve

Theoretical studies of proton capture reactions in A ∼ 25 proton-rich nuclei

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