Study of 19F by  -15N plus t-16O Coupled Channel Orthogonality Condition Model. I: Energy Levels

Sakuda, Toshimi; Nemoto, Fumiki

doi:10.1143/ptp.62.1274

Cited by 38 publications

(51 citation statements)

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“…The core nucleus 19 Ne has the α + 15 O cluster state (J π = 1/2 − 1 ) 238 keV above the ground state (J π = 1/2 + ), which has the (sd) 3 shell structure [41]. The researchers conclude that the s coupled to the J π = 1/2 − 1 state was more deeply bound than that coupled to the ground state, and that the J π = 1/2 − ⊗ s configuration becomes the ground state of 20 Ne.…”

Section: B Discussion On Each Hypernucleusmentioning

confidence: 99%

Deformation of hypernuclei studied with antisymmetrized molecular dynamics

et al. 2011

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An extended version of antisymmetrized molecular dynamics was developed to study the structure of p-sd shell hypernuclei. By using an effective N interaction, we investigated the energy curves of 9 Be, 13 C, and 20,21 Ne as a function of nuclear quadrupole deformation. The changes to nuclear deformation caused by particles are discussed. We found that in the p wave enhances nuclear deformation, while that in the s wave reduces it. This effect is most prominent in 13 C. The possibility of parity inversion in 20 Ne is also examined.

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Section: B Discussion On Each Hypernucleusmentioning

confidence: 99%

Deformation of hypernuclei studied with antisymmetrized molecular dynamics

et al. 2011

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Section: Introductionmentioning

confidence: 99%

“…On the contrary, cluster structures in the 4N systems with a hole in a cluster core, are also interesting research subjects [7][8][9][10][11]. For example, there is a recent study of 11 B = α + α + t, corresponding to a proton hole system of 12 C = 3α [7].…”

Section: Introductionmentioning

confidence: 99%

“…For example, there is a recent study of 11 B = α + α + t, corresponding to a proton hole system of 12 C = 3α [7]. Pioneering work of the hole system is the study of the 19 F nucleus [8][9][10][11]. The 19 F nucleus is the one proton deficient system of 20 Ne, and the rotational bands of α + 15 N and t + 16 O, which are calculated from the folding type potential, were clearly assigned to the energy levels observed in the α and t transfer reactions [8].…”

Section: Introductionmentioning

confidence: 99%

“…The 19 F nucleus is the one proton deficient system of 20 Ne, and the rotational bands of α + 15 N and t + 16 O, which are calculated from the folding type potential, were clearly assigned to the energy levels observed in the α and t transfer reactions [8]. The energy levels in 19 F have also been analyzed in the more sophisticated models, such as the full microscopic α + 15 N cluster model on the basis of the generator coordinate method (GCM) [9,10] and the orthogonalized condition model (OCM) of the (t + 16 O) + (α + 15 N) coupled-channels [11]. In the coupled-channels analysis, t and α cluster bands are clearly identified although a considerable mixture of these two configurations occurs.…”

Section: Introductionmentioning

confidence: 99%

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αcluster structures in unbound states in¹⁹Ne

Otani

Iwasaki

Itô

2016

EPJ Web of Conferences

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Abstract. Cluster structures in 19 Ne are studied by the microscopic and macroscopic cluster models. In the microscopic calculation, the coupled-channels problem of ( 3 He+ 16 O) + (α+ 15 O) is solved, and the adiabatic energy surfaces, which are the series of the energy eigenvalues as a function of the He-O distance, are investigated. In the adiabatic energy curves, the several local minima are generated in the spatial region of the small core distance, where the neutron hole inside of the He or O nucleus is strongly coupled to the residual nuclei. The energy spectra, which are constructed from the strong coupling states, nicely reproduce the the low-lying energy levels in the 19 Ne nucleus. In the macroscopic approach, the α + 15 O potential is evaluated from the elastic scattering of the α + 15 N system, and the resonant levels of the α + 15 O system are calculated under the absorbing boundary condition. The potential model predicts the existence of the resonances above the α threshold, which has a weak-coupling scheme of the α particle and one hole inside of the 16 O nucleus. The extended microscopic calculations of ( 3 He+ 16 O) + (α+ 15 O) + ( 5 He+ 14 O) are performed in order to see the coupling effect of the 5p-2h configuration, which corresponds to the shell model limit of the 5 He + 14 O cluster configuration. The extended calculation suggests that the 5 He + 14 O configuration plays an important role on the formation of the 3/2 + resonance at 0.5 MeV with respect to the α threshold. IntroductionThe α cluster structures have been extensively studied for the so-called 4N nuclei with N = Z, such as 8 Be = 2α, 12 C = 3α, 16 On the contrary, cluster structures in the 4N systems with a hole in a cluster core, are also interesting research subjects [7][8][9][10][11]. For example, there is a recent study of 11 B = α + α + t, corresponding to a proton hole system of 12 C = 3α [7]. Pioneering work of the hole system is the study of the 19 F nucleus [8][9][10][11]. The 19 F nucleus is the one proton deficient system of 20 Ne, and the rotational bands a

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