Two-parameter formula for ground-band energy spectra of A = 120-200 mass region nuclei

2010 ◽  
Vol 5 (2) ◽  
pp. 134
Author(s):  
Vidya Devi ◽  
H.M. Mittal
Keyword(s):  
Mass Region ◽  
Energy Spectra ◽  
Band Energy ◽  
Ground Band ◽  
Two Parameter

Two-term formula for ground band energy symmetry in low-lying levels of light Mg-Zr nuclei

2015 ◽  
Vol 24 (12) ◽  
pp. 1550102
Author(s):  
Vidya Devi
Keyword(s):  
Energy Levels ◽  
Interacting Boson Model ◽  
Band Energy ◽  
Ground Band ◽  
Single Term ◽  
Energy Formula ◽  
Term Energy ◽  
Boson Model ◽  
Two Parameter ◽  
Good Agreement

In this paper, two parameter single-term energy formula [Formula: see text] is used to study the energy spin relationship within the ground bands of even–even Mg-Zr nuclei. The formula works better for the [Formula: see text]-soft nuclei as well as vibrational nuclei. We also compared it with other two-parameter formulas: Ejiri, [Formula: see text], [Formula: see text] and soft rotor formula (SRF). We also study the symmetry of the nuclei in the framework of interacting boson model (IBM-1). The IBM-1 was employed to determine the most appropriate Hamiltonian, the Hamiltonian of the IBM-1 and [Formula: see text](6) symmetry calculation, for the study of these isotopes. We have also calculated energy levels and B(E2) values for number of transitions in these [Formula: see text]Se and [Formula: see text]Kr isotopes and there is a good agreement between the presented results and the previous experimental data.

A two-parameter method for the measurement of neutron energy spectra

1970 ◽  
Vol 83 (1) ◽  
pp. 93-100 ◽  
Author(s):  
L.C. Northcliffe ◽  
C.W. Lewis ◽  
D.P. Saylor
Keyword(s):  
Neutron Energy ◽  
Energy Spectra ◽  
Parameter Method ◽  
Two Parameter

scholarly journals A Uqp(u2) ROTOR MODEL FOR ROTATIONAL BANDS OF SUPERDEFORMED NUCLEI

1995 ◽  
Vol 04 (02) ◽  
pp. 385-410 ◽  
Author(s):  
R. BARBIER ◽  
J. MEYER ◽  
M. KIBLER
Keyword(s):  
Transition Probabilities ◽  
Rotational Energy ◽  
Energy Spectra ◽  
Rotational Bands ◽  
Deformation Parameters ◽  
Fitting Procedures ◽  
Energy Formula ◽  
Reduced Transition Probabilities ◽  
Two Parameter ◽  
Rotor Model

A nonrigid rotor model is developed from the two-parameter quantum algebra Uqp(u2). (This model presents the Uqp(u2) symmetry and shall be refered to as the qp-rotor model.) A rotational energy formula as well as a qp-deformation of E2 reduced transition probabilities are derived. The qp-rotor model is applied (through fitting procedures) to twenty rotational bands of superdeformed nuclei in the A~130, 150, and 190 mass regions. Systematic comparisons between the qp-rotor model and the q-rotor model of Raychev, Roussev, and Smirnov, on one hand, and a basic three-parameter model, on the other, are performed on energy spectra, on dynamical moments of inertia and on B(E2) values. The physical significance of the deformation parameters q and p is discussed.

Identification of the $\nu_{\frac 32}-[521]$ Band in 153Nd and the γ-Transitions in 149Nd

1997 ◽  
Vol 06 (02) ◽  
pp. 331-339 ◽  
Author(s):  
J. K. Hwang ◽  
A. V. Ramayya ◽  
J. H. Hamilton ◽  
J. Kormicki ◽  
L. K. Peker ◽  
...  
Keyword(s):  
Spontaneous Fission ◽  
Mass Region ◽  
Signature Splitting ◽  
Ground Band ◽  
N 93 ◽  
The One ◽  
First Time

From an experiment with Gammasphere and a 252 C spontaneous fission source, two bands with signatures -i and +i are identified in 153 Nd Also several new transitions in 149 Nd are observed for the first time. The band with signature -i in 153 Nd shows no back bending, similar to the one observed in 161 Er . The signature splitting observed in the ground band of 153 Nd is similar to the ones observed in N=93 isotones in this mass region. In 149 Nd the new transitions are placed into a band with a proposed configuration of [Formula: see text].

Generalized grodzins relation for ground band

2019 ◽  
Vol 28 (07) ◽  
pp. 1950055
Author(s):  
J. B. Gupta ◽  
Vikas Katoch
Keyword(s):  
Linear Relationship ◽  
Recent Work ◽  
Nuclear Structure ◽  
Linear Relation ◽  
Mass Region ◽  
Product Formula ◽  
Ground Band ◽  
Nuclear Structures ◽  
Higher Spins ◽  
Kinetic Moment

The well-known Grodzins product [Formula: see text]2, 0[Formula: see text]2[Formula: see text] constancy rule was generalized to the Grodzins linearity relation in our recent work in the form of [Formula: see text] versus [Formula: see text] linear plots. In this form, besides testing the linear relation of [Formula: see text]) and kinetic moment of inertia, it also served as a tool for the study of the spectral details of the nuclei, and for the study of the variation of nuclear structure with [Formula: see text] and [Formula: see text] We now study its extension to the intra band [Formula: see text]2 transition from the higher spins of the ground bands of even [Formula: see text] even [Formula: see text] nuclei of the mid-mass region of Xe–Pt chain of isotopes. We use the plots of [Formula: see text]2, [Formula: see text] versus [Formula: see text] [Formula: see text] and 6[Formula: see text] to test their linear relationship. There seems to be a good correlation of the two entities even at the higher spins for all the nuclei studied here. The deviations from linearity in specific cases can be used for studying the nuclear structures involved.

Level spins of superdeformed bands in A ∼ 80 mass region

2016 ◽  
Vol 25 (06) ◽  
pp. 1650038 ◽  
Author(s):  
Anshul Dadwal ◽  
H. M. Mittal ◽  
Neha Sharma
Keyword(s):  
Mass Region ◽  
Band Head ◽  
Model Parameters ◽  
Mean Square ◽  
Transition Energies ◽  
Fitting Method ◽  
Superdeformed Bands ◽  
Variable Moment ◽  
Two Parameter ◽  
Good Agreement

The models variable moment of inertia (VMI), two-parameter [Formula: see text] formula and Harris [Formula: see text] expansion have been applied to 16 rotational superdeformed bands in the [Formula: see text] mass region to obtain band head spin [Formula: see text]. The band head spins of these 16 bands in the [Formula: see text] mass region are predicted by least-squares fitting method. Intraband [Formula: see text]-rays energies are fitted in these models to extract model parameters so as to obtain a minimum root mean square (RMS) deviation between calculated and the observed transition energies. The calculated transition energies depend upon the prescribed spins. When a legitimate band head spin is assigned, the calculated transition energies are in good agreement with the observed transition energies.

scholarly journals Neutrino scattering off the stable even-even Mo isotopes

2019 ◽  
Vol 18 ◽  
pp. 25
Author(s):  
K. G. Balasi ◽  
T. S. Kosmas
Keyword(s):  
Axial Vector ◽  
Reaction Rates ◽  
Neutrino Energy ◽  
Energy Spectra ◽  
Neutrino Scattering ◽  
Intermediate Energies ◽  
Supernova Neutrino ◽  
Dirac Distribution ◽  
Two Parameter ◽  
Mo Isotopes

A systematic study of neutrino-nucleus reaction rates at low and intermediate energies are presented and discussed, focusing on the even-even Mo isotopes. Contributions coming from both the vector and axial-vector components of the corresponding hadronic currents have been included. The response of these detectors to supernova neutrino is also studied, by exploiting the above results and utilizing the folding procedure assuming a two parameter Fermi-Dirac distribution for the supernova neutrino energy-spectra.

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