scholarly journals Band head spin for triaxial super-deformed bands in 165,167Lu

2018 ◽  
Vol 177 ◽  
pp. 03002
Author(s):  
Poonam Jain ◽  
Samit K. Mandal
Keyword(s):  
Rotational Band ◽  
Spin Assignment ◽  
Band Head ◽  
Transition Energies ◽  
Rotational Bands ◽  
Good Agreement

We use VMI model for the prediction of band head spin of Triaxial Super- Deformed (TSD) rotational bands. The calculated and observed transition energies are agreed well when an accurate band head spin (I0) is predicted. The results are in good agreement with the experimentally known values of spin and transition energies. In the present paper, we have reported the band head spin of TSD bands for Lu isotope. This method brings comprehensive interpretation for spin assignment of TSD bands which could help in designing future experiments for these bands. Thus, we have reported the band head spin value of 5 TSD rotational band of Lu isotope.

Band head spin assignment of Tl isotopes of superdeformed rotational bands

Open Physics ◽  
2014 ◽  
Vol 12 (9) ◽  
Author(s):  
Alpana Goel ◽  
Uma Nair ◽  
Archana Yadav
Keyword(s):  
Spin Assignment ◽  
Band Head ◽  
Moment Of Inertia ◽  
Stiffness Parameter ◽  
Transition Energies ◽  
Rotational Bands ◽  
The Moment ◽  
Variable Moment ◽  
Theoretical Results ◽  
Good Agreement

AbstractThe Variable Moment of Inertia (VMI) model is proposed for the assignment of band head spin of super deformed (SD) rotational bands, which in turn is helpful in the spin prediction of SD bands. The moment of inertia and stiffness parameter (C), were calculated by fitting the proposed transition energies. The calculated transition energies are highly dependent on the prescribed spins. The calculated and observed transition energies agree well when an accurate band head spin (I 0) is assigned. The results are in good agreement with other theoretical results reported in literature. In this paper, we have reported the band head spin value 16 rotational band of super deformed Tl isotopes.

Band head spin assignment of superdeformed bands in A ∼60−80 mass region through nuclear softness formula

2017 ◽  
Vol 26 (11) ◽  
pp. 1750074 ◽  
Author(s):  
Honey Sharma ◽  
H. M. Mittal
Keyword(s):  
Mass Region ◽  
Rotational Frequency ◽  
Spin Assignment ◽  
Band Head ◽  
Least Square ◽  
Mean Deviation ◽  
Transition Energies ◽  
Rotational Bands ◽  
Fitting Method ◽  
Experimental Transition

The nuclear softness formula has been applied to obtain the band head spin ([Formula: see text]) of 7 superdeformed rotational bands ([Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]) in A[Formula: see text]60−80 mass region. To obtain the band head spin ([Formula: see text]) of 7 superdeformed rotational bands in A[Formula: see text]60−80 mass region least square fitting method is used. The parameters are extracted by fitting the intraband transition energies in the nuclear softness formula from where the root mean deviation (RMD) between the calculated and the observed transition energies are obtained. The calculated transition energies are in good agreement with the experimental transition energies whenever exact band head spin ([Formula: see text]) is assigned. The calculated values of dynamic moment of inertia and its variation with rotational frequency for seven superdeformed rotational bands in A[Formula: see text]60−80 mass region are also studied. Hence, it is suggested that the nuclear softness formula works very well in A[Formula: see text]60−80 mass region.

Band head spin assignment of superdeformed bands in 133Pr using two-parameter formulae

2018 ◽  
Vol 33 (09) ◽  
pp. 1850048 ◽  
Author(s):  
Honey Sharma ◽  
H. M. Mittal
Keyword(s):  
Power Index ◽  
Band Head ◽  
Least Square ◽  
Index Formula ◽  
Mean Deviation ◽  
Model Parameters ◽  
Transition Energies ◽  
Rotational Bands ◽  
Experimental Transition ◽  
Two Parameter

The two-parameter formulae viz. the power index formula, the nuclear softness formula and the VMI model are adopted to accredit the band head spin [Formula: see text] of four superdeformed rotational bands in [Formula: see text]. The technique of least square fitting is used to accredit the band head spin for four superdeformed rotational bands in [Formula: see text]. The root mean deviation among the computed transition energies and well-known experimental transition energies are attained by extracting the model parameters from the two-parameter formulae. The determined transition energies are in excellent agreement with the experimental transition energies, whenever exact spins are accredited. The power index formula coincides well with the experimental data and provides minimum root mean deviation. So, the power index formula is more efficient tool than the nuclear softness formula and the VMI model. The deviation of dynamic moment of inertia [Formula: see text] against the rotational frequency is also examined.

Study of rotational bands and electromagnetic properties of odd mass 153−159Eu

2017 ◽  
Vol 26 (06) ◽  
pp. 1750040 ◽  
Author(s):  
Rakesh K. Pandit ◽  
Barun Slathia ◽  
Rani Devi ◽  
S. K. Khosa
Keyword(s):  
Transition Probabilities ◽  
Magnetic Moments ◽  
Negative Parity ◽  
Energy Spectra ◽  
Electromagnetic Properties ◽  
Energy Bands ◽  
Projected Shell Model ◽  
Transition Energies ◽  
Rotational Bands ◽  
Good Agreement

Some positive and negative parity energy bands of odd-A isotopes of Europium [Formula: see text] have been studied within the Projected Shell Model (PSM) framework. Calculated excitation energy spectra, transition energies, E2 and M1 transition probabilities, quadrupole and magnetic moments are compared with experimental data wherever available. Reasonably good agreement is obtained with the observed data.

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.

Theoretical Determination of Absorption With an Emphasis on High Temperatures and a Specific Application to Carbon Monoxide

1973 ◽  
Vol 95 (4) ◽  
pp. 535-538 ◽  
Author(s):  
J. C. Lin ◽  
R. Greif
Keyword(s):  
Carbon Monoxide ◽  
High Temperatures ◽  
Rotational Band ◽  
Experimental Results ◽  
Theoretical Determination ◽  
Hot Band ◽  
Good Agreement

The absorption of a vibrational-rotational band has been studied and the contribution from the first hot band has been included. A specific application has been made to carbon monoxide and good agreement with experimental results has been obtained.

scholarly journals A Search for an Excited Kp=0+ Rotational Band in 24Mg

1976 ◽  
Vol 29 (3) ◽  
pp. 139 ◽  
Author(s):  
D Branford ◽  
LE Carlson ◽  
FCP Huang ◽  
N Gardner ◽  
TR Ophel ◽  
...  
Keyword(s):  
Shell Model ◽  
Quadrupole Moment ◽  
Rotational Band ◽  
Doppler Shift ◽  
Transition Rates ◽  
Model Calculations ◽  
Doppler Shift Attenuation ◽  
Doppler Shift Attenuation Method ◽  
Absolute Transition ◽  
Good Agreement

A search is described for an excited Kn = 0+ rotational band based on the 6� 44 MeV level of 24Mg. Mean nuclear lifetimes have been measured by the Doppler shift attenuation method using the 12C('60,a)24Mg reaction and the results are 't'm = 66�29, 28�7 and 13�3 fs for levels at 6'44, 8�65 and 10� 58 MeV respectively. The absolute transition rates found for the y decays from the 6�44 and 8�65 MeV levels are in good agreement with the results of shell model calculations if it is assumed that these levels are the 0+ and 2 + members respectively of the excited Kn = 0+ rotational band. Based on this assumption, a result Qoo = 0�48 �0�08b is obtained for the intraband quadrupole moment. From a study of the 23Na(p, y) reaction, it is established that the J = 4 levels at 12� 63 and 13�05 MeV do not decay by enhanced E2 transitions to the 8� 65 MeV level. This suggests that neither of these levels is the 4 + member of the excited Kn = 0+ rotational band. An assignment of J" = 4+ is made to one member of the doublet at 10�58 MeV.

scholarly journals Moments of Inertia of SDIBs in A = 190 Mass Region using VMI Model

2020 ◽  
Vol 12 (2) ◽  
pp. 209-214
Author(s):  
P. Jain ◽  
A. Goel ◽  
S. K. Mandal
Keyword(s):  
Theoretical Model ◽  
Large Range ◽  
Mass Region ◽  
Band Head ◽  
Moment Of Inertia ◽  
Moments Of Inertia ◽  
Transition Energies ◽  
Variable Moment ◽  
Dynamic Moment

A lot of identical bands are known at present in the Normal Deformed (ND) region. In our study of the occurrence and properties of identical bands in Super-Deformed (SD) nuclei we first applied the modified Variable Moment of Inertia (VMI) model to extract the band-head spin of Super-Deformed bands. The calculated transition energies, level spins and dynamic moment of inertia are systematically examined. Then, in the framework of theoretical model several identical bands are identified. The kinematic and dynamic moment of inertia have been calculated for the six pairs of Super-Deformed Identical Bands (SDIBs) which was not reported earlier in the literature. Thus, the results are significant. In all the cases J(2) is significantly higher than J(1) over a large range of frequency.

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