scholarly journals Systematic investigation of the rotational bands in nuclei withZ≈100using a particle-number conserving method based on a cranked shell model

2012 ◽  
Vol 85 (1) ◽  
Author(s):  
Zhen-Hua Zhang ◽  
Xiao-Tao He ◽  
Jin-Yan Zeng ◽  
En-Guang Zhao ◽  
Shan-Gui Zhou
Keyword(s):  
Shell Model ◽  
Particle Number ◽  
Systematic Investigation ◽  
Rotational Bands

scholarly journals Particle-number conserving analysis of rotational bands in247,249Cm and249Cf

2011 ◽  
Vol 83 (1) ◽  
Author(s):  
Zhen-Hua Zhang ◽  
Jin-Yan Zeng ◽  
En-Guang Zhao ◽  
Shan-Gui Zhou
Keyword(s):  
Particle Number ◽  
Rotational Bands

PARTICLE-NUMBER CONSERVING TREATMENT FOR THE GROUND STATE BANDS IN EVEN-EVEN TRANSFERMIUM NUCLEI

2008 ◽  
Vol 17 (supp01) ◽  
pp. 208-218 ◽  
Author(s):  
XIAO-TAO HE ◽  
ZHONG-ZHOU REN
Keyword(s):  
Angular Momentum ◽  
Shell Model ◽  
Single Particle ◽  
Ground State ◽  
Particle Number ◽  
Rotational Frequency ◽  
Moment Of Inertia ◽  
Particle Level ◽  
Pairing Correlations ◽  
Band Crossing

The ground state bands observed in even-even transfermium nuclei 250 Fm and 252,254 No are investigated by the cranked shell model with the particle-number conserving treatment for the monopole and quadrupole pairing correlations. The experimental variations of the kinematic moment of inertia with rotational frequency are reproduced very well in our calculation. Our results show bankbendings of [Formula: see text] at ħω ≈ 0.275 and 0.300 MeV in 252 No and 254 No , respectively. The detailed information about the contribution to alignment from each cranked single particle level exhibits that the backbending is mainly due to the rapidly aligned angular momentum of proton 1j15/2 [770]1/2 pairs and neutron 2h11/2 [761]3/2, 1j15/2 [734]9/2 pairs the band crossing.

ROTATIONAL BANDS AND SHELL MODEL IN THE 1f7/2

2002 ◽  
Author(s):  
F. BRANDOLINI ◽  
S. M. LENZI ◽  
N. H. MEDINA ◽  
R. V. RIBAS ◽  
J. SANCHEZ-SOLANO ◽  
...  
Keyword(s):  
Shell Model ◽  
Rotational Bands

The octupole deformation of 143Ba

2015 ◽  
Vol 24 (11) ◽  
pp. 1550081 ◽  
Author(s):  
Yong-Jing Chen ◽  
Yong-Shou Chen ◽  
Zao-Chun Gao ◽  
Ya Tu
Keyword(s):  
Experimental Data ◽  
Shell Model ◽  
Ground State ◽  
Wave Functions ◽  
Rotational Bands ◽  
Octupole Deformation ◽  
Quantum Numbers

Based on existence of the octupole deformation in the intrinsic states, the experimentally observed four rotational bands in [Formula: see text]Ba have been well reproduced by the reflection asymmetric shell model (RASM) calculations. Through the analysis of the calculated RASM wave functions, the intrinsic configuration of the observed rotational bands has been assigned as the octupole deformed neutron [Formula: see text] orbit, which is just located below the [Formula: see text] shell gap. The calculated results supported the ground state octupole deformation and the purity of the simplex quantum numbers [Formula: see text] in [Formula: see text]Ba. In addition, the calculated [Formula: see text] values are in agreement with experimental data, and further support the octupole deformation in [Formula: see text]Ba.

Rotational bands in170Yband171Yband the projected shell model

1998 ◽  
Vol 57 (6) ◽  
pp. 2924-2943 ◽  
Author(s):  
D. E. Archer ◽  
M. A. Riley ◽  
T. B. Brown ◽  
D. J. Hartley ◽  
J. Döring ◽  
...  
Keyword(s):  
Shell Model ◽  
Projected Shell Model ◽  
Rotational Bands

THE HIGHER TAMM–DANCOFF APPROXIMATION: THEORETICAL CONTEXT AND PHENOMENOLOGICAL ASPECTS

2008 ◽  
Vol 17 (01) ◽  
pp. 228-239 ◽  
Author(s):  
PHILIPPE QUENTIN ◽  
HOUDA NAIDJA ◽  
LUDOVIC BONNEAU ◽  
JOHANN BARTEL ◽  
HA THUY LONG
Keyword(s):  
Shell Model ◽  
Quadrupole Interaction ◽  
Particle Number ◽  
Proton Proton ◽  
Hartree Fock ◽  
Pairing Correlations ◽  
Key Aspects ◽  
Proton Pairing ◽  
Theoretical Foundations ◽  
Model Approach

We present the key aspects of the theoretical foundations of the Higher Tamm–Dancoff Approximation which can be interpreted as a truncated shell-model approach based on a Hartree–Fock solution, ensuring the conservation of the particle number. Then we discuss some phenomenological aspects of the residual interactions used, namely the delta interaction to describe the neutron–neutron and proton–proton pairing correlations and the quadrupole–quadrupole interaction to describe vibrational correlations.

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