Description of identical superdeformed bands of the A ∼ 190 mass region

2017 ◽  
Vol 53 (6) ◽  
Author(s):  
Anshul Dadwal ◽  
H. M. Mittal
Keyword(s):  
Mass Region ◽  
Superdeformed Bands

Decay out of superdeformed bands in theA≊190 mass region

1996 ◽  
Vol 54 (3) ◽  
pp. 1182-1188 ◽  
Author(s):  
R. Krücken ◽  
A. Dewald ◽  
P. von Brentano ◽  
D. Bazzacco ◽  
C. Rossi-Alvarez
Keyword(s):  
Mass Region ◽  
Superdeformed Bands

Phenomenological analysis of ΔI = 4 bifurcation and identical superdeformed bands

2021 ◽  
pp. 2150012
Author(s):  
Anshul Dadwal
Keyword(s):  
Empirical Evidence ◽  
Systematic Study ◽  
Mass Region ◽  
Phenomenological Analysis ◽  
Rotational Energy ◽  
Free Parameters ◽  
Superdeformed Bands ◽  
First Time ◽  
Fluctuation Model

For the first time, a systematic study of identical superdeformed (SD) bands in [Formula: see text] mass region is made, where [Formula: see text] bifurcation is present. Four pairs of identical SD bands viz. [Formula: see text] and [Formula: see text] of [Formula: see text] mass region and [Formula: see text] and [Formula: see text] of [Formula: see text] mass region have been systematically studied. The present systematic study provides the universal description of the identical SD bands in various mass regions. We presented the empirical evidence of a similar structure of identical SD bands in various mass regions. For this purpose, we have used various rotational energy formulae. The free parameters are extracted from four identical SD bands. The [Formula: see text] bifurcation in identical SD bands is calculated from shape fluctuation formulae. For the first time, this shape fluctuation model is employed to calculate the [Formula: see text] bifurcation, making it an alternate powerful tool to study SD bands of various mass regions.

Structure of superdeformed bands in the A ≈ 150 mass region

1989 ◽  
Vol 503 (2) ◽  
pp. 285-330 ◽  
Author(s):  
W. Nazarewicz ◽  
R. Wyss ◽  
A. Johnson
Keyword(s):  
Mass Region ◽  
Superdeformed Bands

Description of Superdeformed Bands of the Isotones $$\boldsymbol{N=113}$$ for Nuclear Mass Region $$\boldsymbol{A\sim 190}$$

2020 ◽  
Vol 83 (6) ◽  
pp. 866-878
Author(s):  
A. M. Khalaf ◽  
M. Kotb ◽  
Asmaa Abdelsalam ◽  
M. D. Okasha ◽  
Saddon T. Ahmad ◽  
...  
Keyword(s):  
Mass Region ◽  
Nuclear Mass ◽  
Superdeformed Bands

Description of Superdeformed Bands of the Nuclei in A ~80 Mass Region

2002 ◽  
Vol 19 (3) ◽  
pp. 315-318 ◽  
Author(s):  
Liu Yu-Xin ◽  
Mu Liang-Zhu ◽  
Wang Jia-Jun
Keyword(s):  
Mass Region ◽  
Superdeformed Bands

scholarly journals Universality of decay-out of superdeformed bands in the 190 mass region

2008 ◽  
Vol 661 (2-3) ◽  
pp. 233-238 ◽  
Author(s):  
D.M. Cardamone ◽  
B.R. Barrett ◽  
C.A. Stafford
Keyword(s):  
Mass Region ◽  
Superdeformed Bands

SYSTEMATIC STUDY OF NUCLEAR SOFTNESS OF SUPERDEFORMED BANDS IN A = 190 MASS REGION

2013 ◽  
Vol 22 (08) ◽  
pp. 1350053 ◽  
Author(s):  
NEHA SHARMA ◽  
H. M. MITTAL
Keyword(s):  
Systematic Study ◽  
Gamma Ray ◽  
Neutron Number ◽  
Mass Region ◽  
Energy Ratio ◽  
Softness Parameter ◽  
Superdeformed Bands ◽  
Parameter Values ◽  
First Time ◽  
Valence Proton

A four parameter formula has been applied to obtain the nuclear softness parameter (σ) for all the superdeformed (SD) bands observed in A = 190 mass region. The nuclear softness parameter values of most of the SD bands are found to be smaller than those of the normal deformed bands, implying more rigidity. The results of this work includes the variation of nuclear softness parameter against the gamma ray energy ratio R(I) = Eγ(I→(I-2))/Eγ((I-2)→(I-4)) of SD bands in A = 190 mass region. The variation of R(I) and the nuclear softness parameter of these SD bands are studied with the product of valence proton and neutron numbers (NpNn). The systematics also includes the variation of σ with the neutron number N. It is also found that the value of softness parameter of signature partner SD bands observed in A = 190 mass region is also the same. We present for the first time the study of softness parameter of SD bands with NpNn scheme.

Examination of phenomenological formulae in superdeformed bands of A ∼ 190,150 mass regions

2020 ◽  
Vol 29 (09) ◽  
pp. 2050081
Author(s):  
Monica Karday ◽  
Anshul Dadwal ◽  
H. M. Mittal
Keyword(s):  
Careful Analysis ◽  
Exponential Model ◽  
Mass Region ◽  
Rotational Energy ◽  
Band Head ◽  
General Nature ◽  
Model Parameters ◽  
Softness Parameter ◽  
Superdeformed Bands ◽  
Gap Parameter

The rotational energy formulae viz. VMI model, ab-formula, Harris [Formula: see text] expansion, Exponential model with pairing attenuation and Nuclear softness formula are employed to the superdeformed bands of [Formula: see text] and [Formula: see text] mass regions in order to test the validity of various rotational energy formulae in describing the general nature of superdeformed bands. These formulae are used to deduce the band-head spins of the nine superdeformed bands in [Formula: see text] mass region and two superdeformed bands of [Formula: see text] mass region. The band-head spins of these superdeformed bands have been established experimentally and hence they prove to be excellent candidates to examine the adequacy of rotational energy formulae in superdeformed bands. The least-squares fitting of [Formula: see text]-transition energies is performed to calculate the model parameters such as the band-head moment of inertia, the effective pairing gap parameter and the softness parameter, and a careful analysis of these parameters is made. For the first time, we have performed a systematic study of the rotational energy formulae to establish which formula gives the best estimate of spin in [Formula: see text] mass regions.

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