NUCLEAR STRUCTURE OF 150Sm IN THE DPPQ MODEL AND IBM

The decay pattern of the low lying levels in the shape transitional nucleus 150 Sm is analyzed in terms of the quasi-vibrational and quasi-rotational collective model. The Dynamic Pairing plus quadrupole Model in the microscopic theory of the collective model is employed to predict extensive structure characteristics. The potential energy surface (PES), the spectroscopic factors and the E2, E0 transition rates from the DPPQ model are illustrated. Comparison is made with the predictions in the Interacting Boson Model (IBM-1). A correspondence is demonstrated of the effect of the control parameter in the two models on the calculated nuclear structure. The study of the wave functions of the two spin I = 2 excited states in IBM is carried out. The alternative view of an anharmonic vibrator and a soft rotor is discussed in terms of the E2 transition rates and other structural characteristics.

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Nuclear Structure of 63Ni by IAR

Canadian Journal of Physics ◽

10.1139/p74-058 ◽

1974 ◽

Vol 52 (5) ◽

pp. 402-405 ◽

Cited By ~ 4

Author(s):

K. Ramavataram ◽

G. F. Mercier ◽

C. St-Pierre ◽

D. Sykes ◽

C. S. Yang ◽

...

Keyword(s):

Shell Model ◽

Nuclear Structure ◽

Excited States ◽

Isobaric Analogue ◽

Spectroscopic Factors ◽

Model Predictions

The isobaric analogue resonances of the low excited states of 63Ni have been studied by bombarding targets of 62Ni with protons of energies between 2.5 and 5.0 MeV. Spins as well as the elastic and inelastic widths for some of these states have been determined. The spectroscopic factors that were deduced are compared with shell model predictions.

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QUANTUM REFLECTION, EVAPORATION, AND TRANSPORT CURRENTS AT 4He SURFACES

International Journal of Modern Physics B ◽

10.1142/s0217979206036089 ◽

2006 ◽

Vol 20 (30n31) ◽

pp. 5047-5056

Author(s):

V. APAJA ◽

E. KROTSCHECK ◽

A. RIMNAC ◽

R. E. ZILLICH

Keyword(s):

Excited States ◽

Theoretical Study ◽

Transport Phenomena ◽

Microscopic Theory ◽

Second Order ◽

Quantum Liquid ◽

Quantum Reflection ◽

Quantum Liquids ◽

Inhomogeneous Quantum

In this work, we study transport currents in excited states. This requires the calculation of particle currents [Formula: see text] to second order in the excitation amplitudes. For that purpose, we take a well-tested microscopic theory of inhomogeneous quantum liquids and extend it to find the mass currents created when atoms scatter off a surface or when excitations evaporate atoms. This is the first theoretical study of transport phenomena in a quantum liquid based on a quantitative microscopic theory.

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Intermediate Coupling in 55Fe

Canadian Journal of Physics ◽

10.1139/p71-220 ◽

1971 ◽

Vol 49 (13) ◽

pp. 1832-1835 ◽

Cited By ~ 4

Author(s):

M. Csürös ◽

J. A. Cameron ◽

Z. Zàmori

Keyword(s):

Collective Model ◽

Electromagnetic Properties ◽

Intermediate Coupling ◽

Spectroscopic Factors ◽

Good Agreement

Calculations based on the collective model with intermediate coupling between the surface oscillations of the even–even core 54Fe and 29th neutron have been carried out. Level energies, spectroscopic factors, and electromagnetic properties are obtained in good agreement with experiment.

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Mixed Symmetry States in 92Zr and 94Mo Nuclei

Ukrainian Journal of Physics ◽

10.15407/ujpe66.12.1013 ◽

2021 ◽

Vol 66 (12) ◽

pp. 1013

Author(s):

S.N. Abood ◽

A.A. Al-Rawi ◽

L.A. Najam ◽

F.M. Al-Jomaily

Keyword(s):

Experimental Data ◽

Energy Spectra ◽

Interacting Boson Model ◽

Transition Rates ◽

Collective Models ◽

Electromagnetic Transition ◽

Mixed Symmetry ◽

Mixed Symmetry States ◽

Boson Model ◽

Phonon Model

Mixed-symmetry states of 92Zr and 94Mo isotopes are investigated with the use of the collective models, Interacting Boson Model-2 (IBM-2) and Quasiparticle Phonon Model (QPM). The energy spectra and electromagnetic transition rates for these isotopes are calculated. The results of IBM-2 and QPM are compared with available experimental data. We have obtained a satisfactory agreement, and IBM-2 gives a better description. In these isotopes, we observe a few states having a mixed symmetry such as 2+2, 2+3, 3+1, and 1+s. It is found that these isotopes have a vibrational shape corresponding to the U(5) symmetry.

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Exactly separable version of the Bohr Hamiltonian with the Davidson potential

HNPS Proceedings ◽

10.12681/hnps.2589 ◽

2020 ◽

Vol 16 ◽

pp. 121

Author(s):

D. Bonatsos ◽

E. A. McCutchan ◽

N. Minkov ◽

R. F. Casten ◽

P. Yotov ◽

...

Keyword(s):

Dynamical Symmetry ◽

Transition Rates ◽

Stiffness Parameter ◽

Oscillator Potential ◽

Harmonic Oscillator Potential ◽

Boson Model ◽

Two Parameters ◽

Almost All ◽

First Time ◽

Davidson Potential

An exactly separable version of the Bohr Hamiltonian, is obtained by using a potential of the form V (β, γ) = u(β) + u(γ)/β2, with a Davidson potential for u(β) and a stiff harmonic oscillator potential centered around γ = 0o, for u(γ).Using two parameters (β0 and the γ-stiffness parameter) the band features and B(E2) transition rates of almost all well-deformed rare-earth and actinide nuclei are reproduced, while the spectrum of the SU(3) dynamical symmetry of the Interacting Boson Model can be obtained, for the first time using the Bohr Hamiltonian.

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The Prediction of the Electromagnetic Properties and the ?(E2/M1) of 110-116Cd-Isotopes in IBM Model

Baghdad Science Journal ◽

10.21123/bsj.8.3.772-780 ◽

2011 ◽

Vol 8 (3) ◽

pp. 772-780

Author(s):

Baghdad Science Journal

Keyword(s):

Nuclear Structure ◽

The State ◽

Electromagnetic Properties ◽

Interacting Boson Model ◽

Mixing Ratios ◽

Mixed Symmetry ◽

Full Symmetry ◽

Boson Model ◽

Cd Isotopes ◽

Spin Contribution

The Nuclear structure of 110-116Cd isotopes was studied theoretically in the framework of the interacting boson model of IBM-l and IBM-2. The properties of the lowest mixed symmetry states such as the 1+, 2+ and 3+ levels produced by the IBM-2 model in the vibrational-limit U(5) of Cd - isotopes are studied in details. This analysis shows that the character of mixed symmetry of 2+ is shared between and states in 110-114Cd – isotopes, the large shar goes to s, while in isotope, the state is declared as a mixed symmetry state without sharing. This identification is confirmed by the percentage of F-spin contribution. The electromagnetic properties of E2 and Ml operators were investigated and the results were analyzed. Various values of eB in the IBM-l and fixed e?= 0.104 eb and e?=0.093 e.b in the IBM-2 are used to generate the B(E2) and Q(2+). Fixed values of g? =0.31?N and g? =-0.31?N were adopted to generate the B(Ml) and ?(E2/ Ml) mixing ratios. The small values of ?(E2/Ml) which obtained for transition from MS- states to those of full symmetry support the conclusion that there may be a strong Ml transition between these states.

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Nuclear structure of the spin-isospin excited states inN13studied via the(He3,t)and(He3,tp)reactions at450MeV

Physical Review C ◽

10.1103/physrevc.69.064327 ◽

2004 ◽

Vol 69 (6) ◽

Cited By ~ 25

Author(s):

H. Fujimura ◽

H. Akimune ◽

I. Daito ◽

M. Fujiwara ◽

K. Hara ◽

...

Keyword(s):

Nuclear Structure ◽

Excited States

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Energy, fine structure, and transition rate of the doubly excited 3Pe and 3De states for helium

Canadian Journal of Physics ◽

10.1139/p03-107 ◽

2003 ◽

Vol 81 (12) ◽

pp. 1419-1425 ◽

Cited By ~ 1

Author(s):

X -L Wu ◽

B -C Gou ◽

F Wang

Keyword(s):

Fine Structure ◽

Variational Method ◽

Excited States ◽

Transition Rate ◽

Oscillator Strengths ◽

Transition Rates ◽

Rydberg Series ◽

Doubly Excited States ◽

Quantum Numbers ◽

Doubly Excited

Energies and fine-structure corrections for the doubly excited 3Pe and 3De states of the helium atom are calculated using the RayleighRitz variational method and the saddle-point variational method with a multiconfiguration-interaction function. The relativistic and mass polarization corrections are included. The oscillator strengths, transition rates, and wavelengths are also calculated. The doubly excited states are grouped into Rydberg series labeled by the quantum numbers K, T, and A to display the systematic regularity along the series. The results are compared with the theoretical and experimental data in the literature. PACS Nos.: 31.15.Pf, 31.25.Jf, 32.70.Cs

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