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1.
Re-discussion of the Spin Assignments of the Superdeformed Bands in A≈190 Region (Ⅱ) Odd Superdeformed Nuclei
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The influence of the I=1 staggering and the fluctuation in observed γ-tyanstion energies on the spin assignments of superdeformed bands is taken into account properly. An improved approach for removing the fluctuations from the observed y transition energies is proposed. The smoothed transition energies are fitted by the ah expression or its modification to assign the spins of the superdeformed bands in the odd-A nuclei in A≈190 region. The assigned spins for some superdeformed bands are different from those given in other approaches. 相似文献
2.
With the supersymmetry scheme including many-body interactions and aperturbation possessing the SO(5)(or SU(5)) symmetry on the rotational symmetry, the superdeformed bands and △I=4 bifurcation of odd-odd nuclei in A ~ 190 mass region are investigated systematically. Good results for the γ-ray energies, the dynamical moments of inertia, and energy differences △Eγ - △Eref γ are obtained. It shows that this approach is quite powerful in describing odd-odd nuclei in the region. 相似文献
3.
Identical superdeformed bands exist extensively in the A ~ 190 region. With a few exceptions, almost all the superdeformed bands observed have their identical counterparts, supporting the concept of the quantized spin alignment. A likely explanation of the systematics of the superdeformed bands within the framework of particle-rotor model with pseudo-spin symmetry is presented. 相似文献
4.
Using the supersymmetry scheme including many-body interactions, we investigate the superdeformed (SD) bands of the nuclei in A ~ 60 mass region systematically. Quantitatively good results of the γ-ray energy spectra and the dynamical moments of inertia are obtained. It shows that the supersymmetry approach is powerful to describe the generic rotational property of SD states of light nuclei. 相似文献
5.
ZHANG Da-Li 《理论物理通讯》2005,43(2):295-298
Properties of the superdeformed bands of odd-odd nuclei in A~80 mass
region are investigated systematically within the supersymmetry scheme including many-body interactions and a perturbation possessing the SO(5) (or
SU(5)) symmetry on
the rotational symmetry. The obtained γ-ray energies, and the dynamical moments of inertia agree with experimental data. It shows that this approach is quite powerful
in describing odd-odd nuclei in
A~80 mass region. 相似文献
6.
With the supersymmetry scheme including many-body interactions, the global property and the ΔI=4 bifurcation
in the superdeformed (SD) bands of odd-odd nuclei in A~150 mass region are investigated systematically.
Good results for the γ-ray energies, the dynamical moments of
inertia, and energy differences
ΔEγ-ΔEγref are obtained.
It shows that this approach is quite powerful in describing not only
the SD bands in even-even and odd-A nuclei but also those in odd-odd nuclei
in the mass region. 相似文献
7.
Identical bands of odd-A superdeformed nuclei in the A~190 mass region have been investigated using triaxial-particle-rotor model within the framework of the BCS pairing correlation. Three pairs of identical bands (191Au, 191Hg(b1)), (191Hg(b2),193Hg(b2)), and (191Hg(b3), 193Hg(b3)) are analyzed. It is pointed out that the identity in the γ-transition energies in these bands may be the result of the occupation of some special orbitals. 相似文献
8.
With the supersymmetry scheme including many-body interactions, the global property and the △I = 4bifurcation in the superdeformed (SD) bands of odd-odd nuclei in A ~ 150 mass region are investigated systematically.Good results for the γ-ray energies, the dynamical moments of inertia, and energy differences △ Eγ - △ Erefγ are obtained.It shows that this approach is quite powerful in describing not only the SD bands in even-even and odd-A nuclei butalso those in odd-odd nuclei in the mass region. 相似文献
9.
The 27 superdeformed bands, whose spin determinations aren't in agreement with two-parameter, three-parameter and four-parameter I(I+1) expansions, are analyzed. The results show that the angular momenta of 18 superdeformed bands can be determined by comparison with the variation of the kinematic and dynamic moments of inertia with rotational frequency and their mutual relation. The angular momenta of superdeformed bands like 192Hg(2), which have bands cross, can also determined by analyzing the spectra before bands cross and by comparison with the variation of the kinematic and dynamic moments of inertia with rotational frequency and their mutual relation. 相似文献
10.
The q-deformed moment of inertia, formulated by was first introduced as the mechanical moment of inertia of superdeformed (SD) nuclei. The E2 transition γ-ray energies and the dynamical moment of inertia of the lowest-formed bands in Hg, Ph, and TI isotopes are calculated. The calculated results indicate that the SD bands may be described by the ided-rotor with the q-deformed mpment of inertia. 相似文献
11.
Within the supersymmetry scheme inchuding many-body interactions and a perturbation possessing the SO(5) (or SU(5)) symmetry on the rotational symmetry,the superdeformed (SD) bands of the nuclei in the A-80 mass region are investigated systematically.Quantitatively good results of the γ-ray energy spectra and the dynamical monents of inertia are obtained.It is shown that the supersymmetry approach is powerful to describe not only the generic rotational property,but also the characteristic of the triaxial SD band simultaneously. 相似文献
12.
Properties of the superdeformed bands of odd-odd nuclei in A ~ 130 mass region are investigatedsystematically within the supersymmetry scheme including many-body interactions and a perturbation possessing theSO(5) (or SU(5)) symmetry on the rotational symmetry. The obtained γ-ray energies, the dynamical moments ofinertia, and energy differences △Eγ - △Erefγ ef agree with experimental data. It shows that this approach is quite powerfulin describing odd-odd nuclei in 130 mass region. 相似文献
13.
ZAHNGDa-Li LIJin-Bo DINGBin-Gang 《理论物理通讯》2003,40(3):353-356
Properties of the superdeformed bands of odd-odd nuclei in A~130 mass region are investigated systematically within the supersymmetry scheme including many-body interactions and a perturbation possessing the SO(5) (or SU(5)) symmetry on the rotational symmetry. The obtained γ-ray energies, the dynamical moments of inertia, and energy differences △Eγ - △Eγ^ref agree wlth experimental data. It shows that this approach is quite powerful in describing odd-odd nuclei in 130 mass region. 相似文献
14.
Elimination of the Fluctuation in the Observed Transition Energies and Spin Assignments of the Superdeformed Bands in A≈150 Region
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The spins of superdeformed bands in A≈150 region are assigned by the ah fitting provided the fluctuation are removed from the observed transition energies. Some typical superdeformed bands are discussed. For some superdeformed bands, the precision of spin assignments by the ah fitting could be improved. 相似文献
15.
The existence of the △I=4 bifurcation is confirmed via an overall investigation of the A~190 superdeformed bands. The behavior of the bifurcation amplitude is also discussed. 相似文献
16.
The superdeformed bands in A~190 region were systematically investigated to indicate the existence of ΔI = 4 bifurcation in this region. The behavior of bifurcation was also discussed. 相似文献
17.
The Vibrational and Rotational Motions Model of Nucleus(Ⅲ) Study of Superdeformed Bands in A~190 Region
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The rotational spectra formula for superdeformed bands is derived from the cranking Bohr-Mottelson Hamiltonian proposed by us.Level spins and transition energies of 24 superdeformed bands in the A~190 region are studied with this formula.The obtained results are satisfactory. 相似文献
18.
superdeformed bands in the A~190 region are systematically analyzed by using the twoparameter expansion of quantum group Uqp(u2) Model. The calculated results of E2 transition γ ray energies are in agreement with experimental data. According to three different methods for the spin assignment of rotational bands, the spin values of the band head I0 of the yrast SD bands in 194Hg(1) and 194Pb(1) are assigned. Furthermore, the physical meaning of the nuclear softness is discussed, and these nuclear softness values of a signature partner are almost equal. 相似文献
19.
Physics of Atomic Nuclei - The axial asymmetry deformation parameter $$\gamma$$ , the gamma transition energies, rotational frequencies, kinematic and dynamic moments of inertia in triaxial... 相似文献
20.
Vibrational and Rotational Motions Model of Nucleus(Ⅰ) Cranking Bohr-Mottelson Hamiltonian and Analyses of the Rotational Bands of Even-Even Nuclei
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Starting from cranking shell model,a collective vibrational and rotational Hamiltonian(cranking Bohr-Mottelson Hamiltonian CBMH)is derived,in which the rotational frequency is not quantized.Introducing a reasonable collective potential,the formula for the rotational spectrum can be obtained.The formula is applied to analyze the rotational bands of even-even nuclei with satisfactory results. 相似文献