On the coupling between multiphonon configurations in deformed nuclei

Nesterenko, V. O.

doi:10.1007/bf01294469

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…Note that, for the proper treatment of anharmonic effects, inclusion only of two-phonon configurations may not be enough. The impact of higher configurations and exact record of the Pauli principle are also necessary, see discussion [46,47]. All these factors make anharmonic models very complicated.…”

Section: Discussionmentioning

confidence: 99%

Nuclear vorticity in isoscalarE1modes: Skyrme-random-phase approximation analysis

et al. 2014

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Two basic concepts of nuclear vorticity, hydrodynamical (HD) and Rawenthall-Wambach (RW), are critically inspected. As a test case, we consider the interplay of irrotational and vortical motion in isoscalar electric dipole E1(T = 0) modes in 208 Pb, namely the toroidal and compression modes. The modes are described in a self-consistent random-phase approximation (RPA) with the Skyrme force SLy6. They are examined in terms of strength functions, transition densities, current fields, and form factors. It is shown that the RW conception (suggesting the upper component of the nuclear current as the vorticity indicator) is not robust. The HD vorticity is not easily applicable either because the definition of a velocity field is too involved in nuclear systems. Instead, the vorticity is better characterized by the toroidal strength which closely corresponds to HD treatment and is approximately decoupled from the continuity equation.

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Section: Discussionmentioning

confidence: 99%

Nuclear vorticity in isoscalarE1modes: Skyrme-random-phase approximation analysis

et al. 2014

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Section: Discussionmentioning

confidence: 99%

Nuclear vorticity in isoscalar E1 modes: Skyrme-RPA analysis

Reinhard,

Nesterenko,

Repko

et al. 2013

Preprint

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Two basic concepts of nuclear vorticity, hydrodynamical (HD) and Rawenthall-Wambach (RW), are critically inspected. As a test case, we consider the interplay of irrotational and vortical motion in isoscalar electric dipole E1(T=0) modes in 208 Pb, namely the toroidal and compression modes. The modes are described in a self-consistent random-phase-approximation (RPA) with the Skyrme force SLy6. They are examined in terms of strength functions, transition densities, current fields, and formfactors. It is shown that the RW conception (suggesting the upper component of the nuclear current as the vorticity indicator) is not robust. The HD vorticity is not easily applicable either because the definition of a velocity field is too involved in nuclear systems. Instead, the vorticity is better characterized by the toroidal strength which closely corresponds to HD treatment and is approximately decoupled from the continuity equation.

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“…In (6), the monopole (λ = µ =0 )pairing has been taken into account. In order to obtain the energies and the wave functions of the excited 0 + sates, we follow the RPA method.…”

Section: Modelmentioning

confidence: 99%

“…In other words, the nature of the 0 + states is the most controversial subject in these nuclei. Especially, the structure of the lowest one has become a research field by itself [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. A good summary of the recent discussions on the nature of the 0 + states and the status of the problem according to the Macroscopic Collective Model, Quasiparticle Phonon Nuclear Model (QPNM) and Interacting Boson Model (IBM) was presented in [21].…”

Section: Introductionmentioning

confidence: 99%

“…For that reason, it is important to understand the origin of such a large number of the 0 + modes. So far, although many theoretical studies on the 0 + excitations in deformed nuclei have been made in the last decades, there has not been any study considering the situation up to ∼ 3 MeV because of the lack of such an earlier data [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Recently, Zamfir et al [23] using Geometric Collective Model (GCM), sd-IBM and spdf-IBM studied the 0 + states in 158 Gd.…”

Section: Introductionmentioning

confidence: 99%

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Excited 0⁺ states in ^{156,158,160,162} Gd

Gerçeklioğlu

2005

Annalen der Physik

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Excited Kπ = 0+ states in 156,158,160,162 Gd isotopes are studied by using the pairing plus quadrupole model (PPQ). To determine the nature and the general trend of the properties of these states depending on the neutron number, B(E2), ρ2(E0) values and two‐nucleon transfer strengths are calculated. We observe that by means of the PPQ model, approximately 13‐14 0+ states can be obtained up to 3.3 MeV for the nuclei in question, where most of them are two‐quasiparticle (2qp) in character.

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On the coupling between multiphonon configurations in deformed nuclei

Cited by 6 publications

References 9 publications

Nuclear vorticity in isoscalarE1modes: Skyrme-random-phase approximation analysis

Nuclear vorticity in isoscalarE1modes: Skyrme-random-phase approximation analysis

Nuclear vorticity in isoscalar E1 modes: Skyrme-RPA analysis

Excited 0⁺ states in ^{156,158,160,162} Gd

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On the coupling between multiphonon configurations in deformed nuclei

Cited by 6 publications

References 9 publications

Nuclear vorticity in isoscalarE1modes: Skyrme-random-phase approximation analysis

Nuclear vorticity in isoscalarE1modes: Skyrme-random-phase approximation analysis

Nuclear vorticity in isoscalar E1 modes: Skyrme-RPA analysis

Excited 0+ states in 156,158,160,162 Gd

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Excited 0⁺ states in ^{156,158,160,162} Gd