Microscopic study of nuclear structure dynamics of neutron-deficient even–even 100–110Cd isotopes within the framework of projected shell model

2020 ◽  
Vol 35 (23) ◽  
pp. 2050189
Author(s):  
Pankaj Kumar ◽  
Shashi K. Dhiman
Keyword(s):  
Band Structure ◽  
Shell Model ◽  
Nuclear Structure ◽  
Microscopic Study ◽  
Projected Shell Model ◽  
Ground Band ◽  
Structure Dynamics ◽  
Mass Chain ◽  
Deformed Nucleus ◽  
Cd Isotopes

We have studied the deformation systematics of [Formula: see text] and [Formula: see text] values, yrast spectra, band structure and backbending phenomena in the neutron-deficient even–even [Formula: see text]Cd isotopes within the projected shell model (PSM) framework. The observations of the systematics of [Formula: see text] and [Formula: see text] values for [Formula: see text]Cd isotopes are well reproduced in present calculations. Our observations show that, as we move from [Formula: see text]Cd to [Formula: see text]Cd, the deformation increases and then it reduces up to [Formula: see text]Cd. This gives us a confirmation that [Formula: see text]Cd is the most deformed nucleus in this set of isotopic mass chain. The backbending phenomena is also observed in these isotopes, which can be related to the crossing of ground band (g-band) by 2-quasiparticle (qp) bands or s-bands. The pseudomagic character of [Formula: see text]Cd has also been observed.

Band structure of odd-mass lanthanum nuclei

2014 ◽  
Vol 23 (04) ◽  
pp. 1450020
Author(s):  
Deepti Sharma ◽  
Preeti Verma ◽  
Suram Singh ◽  
Arun Bharti ◽  
S. K. Khosa
Keyword(s):  
Band Structure ◽  
Shell Model ◽  
Nuclear Structure ◽  
Transition Probabilities ◽  
Theoretical Data ◽  
Negative Parity ◽  
Projected Shell Model ◽  
Experimental Feature ◽  
Reduced Transition Probabilities ◽  
Structure Properties

Negative parity energy states in 121–131 La have been studied using Projected Shell Model (PSM). Some nuclear structure properties like yrast spectra, back-bending in moment of inertia, reduced transition probabilities and band diagrams have been described. The experimental feature of the co-existence of prolate–oblate shapes in 125–131 La isotopes has been satisfactorily explained by PSM results. Comparison of the theoretical data with their experimental counterparts has also been made. From the calculations, it is found that the yrast states arise because of multi-quasiparticle states.

Microscopic study of nuclear structure of odd-odd 128–138I nuclei within the framework of projected shell model for positive- and negative-parity states

2020 ◽  
Vol 35 (29) ◽  
pp. 2050243 ◽  
Author(s):  
Vikesh Kumar ◽  
Shashi K. Dhiman
Keyword(s):  
Shell Model ◽  
Nuclear Structure ◽  
Microscopic Study ◽  
Single Particle ◽  
Negative Parity ◽  
Model Analysis ◽  
Energy Splitting ◽  
Projected Shell Model ◽  
Band Structures ◽  
Quasi Particle

We have done the microscopic study of neutron-rich odd-odd iodine isotopes within the framework of projected shell model. Odd-odd nuclei are the best candidates for studying possible structure variations away from the valley of stability. We used the projected shell model, in which the deformed Nilsson single-particle states are being used for the construction of model basis. We studied the band properties of odd-odd I[Formula: see text](Z [Formula: see text] 53) isotopes with neutron numbers N [Formula: see text] 75, 77, 79, 81, 83 and 85. Using model analysis, we presented the low-lying positive- and negative-parity states of these nuclei. In these isotopes, the band structures have been analyzed in terms of quasi-particle configurations and comparative presentation of yrast levels is discussed. The phenomenon of yrast energy splitting is also studied in this work.

scholarly journals Projected shell model study for the yrast-band structure of the proton-rich mass-80 nuclei

2001 ◽  
Vol 686 (1-4) ◽  
pp. 141-162 ◽  
Author(s):  
R. Palit ◽  
J.A. Sheikh ◽  
Y. Sun ◽  
H.C. Jain
Keyword(s):  
Band Structure ◽  
Shell Model ◽  
Yrast Band ◽  
Projected Shell Model ◽  
Model Study

Projected shell model study of band structure of 90Nb

2016 ◽  
Author(s):  
Amit Kumar ◽  
Dhanvir Singh ◽  
Anuradha Gupta ◽  
Suram Singh ◽  
Arun Bharti
Keyword(s):  
Band Structure ◽  
Shell Model ◽  
Projected Shell Model ◽  
Model Study

MICROSCOPIC STUDY OF NEGATIVE PARITY YRAST STATES IN NEUTRON-DEFICIENT 119–127Ba ISOTOPES

2011 ◽  
Vol 20 (05) ◽  
pp. 1183-1201 ◽  
Author(s):  
ARUN BHARTI ◽  
SURAM SINGH ◽  
S. K. KHOSA
Keyword(s):  
Experimental Data ◽  
Shell Model ◽  
Microscopic Study ◽  
Energy Levels ◽  
Negative Parity ◽  
Band Head ◽  
Projected Shell Model ◽  
Transition Energies ◽  
Yrast Bands ◽  
Model Approach

The negative parity yrast bands of neutron-deficient 119–127 Ba nuclei are studied by using the Projected Shell Model approach. Energy levels, transition energies and B(M1)/B(E2) ratios are calculated and compared with the available experimental data. The calculations reproduce the band head spins of negative parity yrast bands and indicate the multi-quasiparticle structure for these bands.

Moments of inertia and B(E2;01+→21+)s in the NpNn scheme

2015 ◽  
Vol 93 (7) ◽  
pp. 711-715
Author(s):  
Rajesh Kumar ◽  
S. Sharma
Keyword(s):  
Nuclear Structure ◽  
Strong Dependence ◽  
Moment Of Inertia ◽  
Nucleon Pair ◽  
Valence Nucleon ◽  
Moments Of Inertia ◽  
Ground Band ◽  
Neutron Interaction ◽  
Medium Mass

We examine the collective nuclear structure of light and medium mass (Z = 50–82, N = 82–126) even–even nuclei using valence nucleon pair product (NpNn). We discuss the role of proton–neutron interaction in light mass nuclei and illustrate the variation of observables of collectivity and deformation (i.e., ground band moment of inertia) and B(E2) values with N and NpNn). The plot of these observables against NpNn vividly displays the formation of isotonic multiplets in quadrant I, strong dependence on NpNn in quadrant II and weak constancy with Z in quadrant III is illustrated.

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