Band crossing and the N=7 intruder orbital in superdeformed nucleus 193Hg

Liu, S.X.; Zeng, Jumei

doi:10.1016/j.nuclphysa.2004.03.036

Cited by 9 publications

(7 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[45]), thus the J (1) 's can be accurately extracted. The ω-dependence of experimental MOIs for series of SD bands [46][47][48] were reproduced very well by the PNC calculations for the CSM with both monopole and quadrupole pairing interactions [29,49,50]. In Even for the highest seniority bands identified so far, the pairing gaps ∆p (ω = 0, ν) and ∆n (ω = 0, ν) remains larger than 70% of the bandhead value of the qp-vacuum band.…”

Section: Pairing Gaps Of Sd Bandsmentioning

confidence: 68%

See 1 more Smart Citation

Nuclear pairing reduction due to rotation and blocking

et al. 2011

View full text Add to dashboard Cite

Nuclear pairing gaps of normally deformed and superdeformed nuclei are investigated using the particle-number conserving (PNC) formalism for the cranked shell model, in which the blocking effects are treated exactly. Both rotational frequency ω-dependence and seniority (number of unpaired particles) ν-dependence of the pairing gap∆ are investigated. For the ground-state bands of even-even nuclei, PNC calculations show that in general∆ decreases with increasing ω, but the ω-dependence is much weaker than that calculated by the number-projected Hartree-FockBogolyubov approach. For the multiquasiparticle bands (seniority ν > 2), the pairing gaps keep almost ω-independent. As a function of the seniority ν, the bandhead pairing gaps∆(ν, ω = 0) decrease slowly with increasing ν. Even for the highest seniority ν bands identified so far,∆(ν, ω = 0) remains greater than 70% of∆(ν = 0, ω = 0).

show abstract

Section: Pairing Gaps Of Sd Bandsmentioning

confidence: 68%

Section: Pairing Gaps Of Sd Bandsmentioning

confidence: 76%

Nuclear pairing reduction due to rotation and blocking

et al. 2011

View full text Add to dashboard Cite

show abstract

“…[44]), and thus the J (1) 's can be accurately extracted. The ω dependence of experimental MOIs for a series of SD bands [45][46][47] was reproduced very well by the PNC calculations for the CSM with both monopole and quadrupole pairing interactions [29,48,49].…”

Section: Pairing Gaps Of Sd Bandsmentioning

confidence: 67%

Nuclear Pairing Reduction Due to Rotation and Blocking

Zhang¹

2011

Nuclear Structure in China 2010

View full text Add to dashboard Cite

Nuclear pairing gaps of normally deformed and superdeformed nuclei are investigated using the particlenumber-conserving (PNC) formalism for the cranked shell model, in which the blocking effects are treated exactly. Both rotational frequency ω dependence and seniority (number of unpaired particles) ν dependence of the pairing gap˜ are investigated. For the ground-state bands of even-even nuclei, PNC calculations show that, in general,˜ decreases with increasing ω, but the ω dependence is much weaker than that calculated by the number-projected Hartree-Fock-Bogolyubov approach. For the multiquasiparticle bands (seniority ν > 2), the pairing gaps stay almost ω independent. As a function of the seniority ν, the bandhead pairing gaps˜ (ν, ω = 0) decrease slowly with increasing ν. Even for the highest seniority ν bands identified so far,˜ (ν, ω = 0) remains greater than 70% of˜ (ν = 0, ω = 0).

show abstract

“…The PNC-CSM method is proposed to treat properly the pairing correlations and blocking effects. It has been applied successfully for describing the properties of normal deformed nuclei in A ∼ 170 mass region [47][48][49][50][51][52], superdeformed nuclei in A ∼ 150, 190 mass region [53][54][55][56][57][58][59], high-K isomeric states in the rare-earth and actinide mass region [60][61][62][63][64][65][66] and recently in the heaviest actinides and light superheavy nuclei around Z ∼ 100 region [23,24,39,67]. In contrast to the conventional Bardeen-Cooper-Schrieffer (BCS) or HFB approach, the Hamiltonian is diagonalized directly in a truncated Fock space in the PNC method [68,69].…”

Section: Introductionmentioning

confidence: 99%

Rotational properties of the odd-Z transfermium nucleus 255Lr by a particle-number-conserving method in the cranked shell model

Li¹,

He²

2016

Sci. China Phys. Mech. Astron.

View full text Add to dashboard Cite

Experimentally observed ground state band based on the 1/2 − [521] Nilsson state and the first exited band based on the 7/2 − [514] Nilsson state of the odd-Z nucleus 255 Lr are studied by the cranked shell model (CSM) with the paring correlations treated by the particle-number-conserving (PNC) method. This is the first time the detailed theoretical investigations are performed on these rotational bands. Both experimental kinematic and dynamic moments of inertia (J (1) and J (2) ) versus rotational frequency are reproduced quite well by the PNC-CSM calculations. By comparing the theoretical kinematic moment of inertia J (1) with the experimental ones extracted from different spin assignments, the spin 17/2 − → 13/2 − is assigned to the lowest-lying 196.6(5) keV transition of the 1/2 − [521] band, and 15/2 − → 11/2 − to the 189(1) keV transition of the 7/2 − [514] band, respectively. The proton N = 7 major shell is included in the calculations. The intruder of the high−j low−Ω 1j 15/2 (1/2 − [770]) orbital at the high spin leads to band-crossings at ω ≈ 0.20 ( ω ≈ 0.25) MeV for the 7/2 − [514] α = −1/2 (α = +1/2) band, and at ω ≈ 0.175 MeV for the 1/2 − [521] α = −1/2 band, respectively. Further investigations show that the band-crossing frequencies are quadrupole deformation dependent.

show abstract

Band crossing and the N=7 intruder orbital in superdeformed nucleus 193Hg

Cited by 9 publications

References 23 publications

Nuclear pairing reduction due to rotation and blocking

Nuclear pairing reduction due to rotation and blocking

Nuclear Pairing Reduction Due to Rotation and Blocking

Rotational properties of the odd-Z transfermium nucleus 255Lr by a particle-number-conserving method in the cranked shell model

Contact Info

Product

Resources

About