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...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.展开更多
We calculate the binding energies of Ni, Cu, Xe, Cs, Pt, Au, Np, Pu isotope chains using two interaction parameter sets NL-3 and NL-Z, and compared the relative errors of the even-even nuclei with those of odd-even nu...We calculate the binding energies of Ni, Cu, Xe, Cs, Pt, Au, Np, Pu isotope chains using two interaction parameter sets NL-3 and NL-Z, and compared the relative errors of the even-even nuclei with those of odd-even nuclei and odd-odd nuclei. We find that the errors of binding energy of odd-even and odd-odd nuclei are not bigger than the one of even-even nuclei. The result shows that comparing with even-even nuclei, there is no systematic error and approximation in the calculations of the binding energy of odd-even and odd-odd nuclei with relativistic mean-field theory. In addition, the result is explained theoretically.展开更多
Properties of the superdeformed bands of odd-odd nuclei in A ～ 80 massregion are investigated system-atically within the supersymmetry scheme including many-bodyinteractions and a perturbation possessing the SO(5) (o...Properties of the superdeformed bands of odd-odd nuclei in A ～ 80 massregion are investigated system-atically within the supersymmetry scheme including many-bodyinteractions 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. Itshows that this approach is quite powerful in describing odd-odd nuclei in A ～ 80 mass region.展开更多
Properties of the chair doublet bands of the odd-odd Cs isotopes built on the πh11/2× vh11/2 configuration are investigated systematically within the supersymmetry scheme including many-body interactions and pos...Properties of the chair doublet bands of the odd-odd Cs isotopes built on the πh11/2× vh11/2 configuration are investigated systematically within the supersymmetry scheme including many-body interactions and possessing the SO（5）（or SU（5）） symmetry on the rotational symmetry. Quantitatively good results of the energy spectra, the energy staggering parameter as a function of the spin are obtained. The calculation shows that the stronger competition between the pairing and anti-pairing effects and the SU（3） symmetry broking more seriously exist in the stable chiral structure.展开更多
High Spin states of the odd-odd <sup>162</sup>Lu nucleus have been studied via <sup>147</sup>Sm(<sup>19</sup>F,4nγ)reaction at90 MeV beam energy.Level scheme for yrast band based ...High Spin states of the odd-odd <sup>162</sup>Lu nucleus have been studied via <sup>147</sup>Sm(<sup>19</sup>F,4nγ)reaction at90 MeV beam energy.Level scheme for yrast band based on π[h<sub>11/2</sub>]v[i<sub>13/2</sub>]configuration was estab-lished,for the first time,up to I<sup>π</sup>=23<sup>-</sup>.This band shows the signature inversion in energy before band-bending generally appeared in this mass region.It is stressed that the signature splitting in <sup>162</sup>Lu is biggerthan that in <sup>160</sup>Tm which could be understood in the framewrok of the cranked shell model if taking posi-tire γ-triaxiality into account.展开更多
Signature inversion in odd-odd nuclei is investigated by using a proton and a neutron coupling to the coherent state of the core. Two parameters are employed in the Hamiltonian to set the energy scales of rotation,neu...Signature inversion in odd-odd nuclei is investigated by using a proton and a neutron coupling to the coherent state of the core. Two parameters are employed in the Hamiltonian to set the energy scales of rotation,neutron-proton coupling and their competition. Typical level staggering is extracted from the calculated level energies. The calculation can approximately reproduce experimental signature inversion. Signature inversion is attributed to the rotational motion and neutron-proton residual interaction having reversed signature splitting rules. It is found signature inversion can appear at axially symmetric shape and high-K band.展开更多
High-spin states in182Au have been produced and studied via the152Sm(35Cl,5nγ)182Au reaction. The level scheme consisting of the πh 9/2?νi 13/2 and πi 13/2?νi 13/2 bands has been established for the first time. T...High-spin states in182Au have been produced and studied via the152Sm(35Cl,5nγ)182Au reaction. The level scheme consisting of the πh 9/2?νi 13/2 and πi 13/2?νi 13/2 bands has been established for the first time. The low spin signature inversion in both bands has been found. The observed signature inversion phenomena can be interpreted qualitatively using the pairing and deformation self-consistent cranked Wood-Saxon calculations.展开更多
采用热压法制备了奇–奇数聚酰胺(PA)1111铁电薄膜,研究了PA1111的铁电性,并通过探讨极化温度(Tp)、极化时间(tp)和极化电场强度(Ep)对PA1111压电应变常数(d33)的影响来研究PA1111的压电性。结果表明,在频率0.1 Hz,外加电场150 MV/m的...采用热压法制备了奇–奇数聚酰胺(PA)1111铁电薄膜,研究了PA1111的铁电性,并通过探讨极化温度(Tp)、极化时间(tp)和极化电场强度(Ep)对PA1111压电应变常数(d33)的影响来研究PA1111的压电性。结果表明,在频率0.1 Hz,外加电场150 MV/m的条件下,PA1111的矫顽电场(Ec)约为75 MV/m,剩余极化强度(Pr)达47 m C/m2。在相同的测试条件下,PA1111的Ec接近于PA11,但Pr比PA11的低,两者的压电性能相差不大。极化工艺研究表明,随着tp增加,PA1111的d33先迅速增大后趋于稳定;随着Ep的增加和Tp的升高,PA1111的d33随之增大。在Tp为75℃,tp为30 min,Ep为50 MV/m的条件下,PA1111的d33达-3.9 p C/N,压电电压常数达-169 m V·m/N。展开更多
文摘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.
基金The project supported by National Natural Science Foundation of China under Grant No. 10475026 （2004）
文摘We calculate the binding energies of Ni, Cu, Xe, Cs, Pt, Au, Np, Pu isotope chains using two interaction parameter sets NL-3 and NL-Z, and compared the relative errors of the even-even nuclei with those of odd-even nuclei and odd-odd nuclei. We find that the errors of binding energy of odd-even and odd-odd nuclei are not bigger than the one of even-even nuclei. The result shows that comparing with even-even nuclei, there is no systematic error and approximation in the calculations of the binding energy of odd-even and odd-odd nuclei with relativistic mean-field theory. In addition, the result is explained theoretically.
基金国家自然科学基金，教育部重点项目，教育部高校骨干教师资助计划，the Scientific Research Foundation of Zheiiang Province of China
文摘Properties of the superdeformed bands of odd-odd nuclei in A ～ 80 massregion are investigated system-atically within the supersymmetry scheme including many-bodyinteractions 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. Itshows that this approach is quite powerful in describing odd-odd nuclei in A ～ 80 mass region.
基金Supported by the National Natural Science Foundation of China under Grant No.10475026the Natural Science Foundation of Zhejiang Province under Grant No.KY607518
文摘Properties of the chair doublet bands of the odd-odd Cs isotopes built on the πh11/2× vh11/2 configuration are investigated systematically within the supersymmetry scheme including many-body interactions and possessing the SO（5）（or SU（5）） symmetry on the rotational symmetry. Quantitatively good results of the energy spectra, the energy staggering parameter as a function of the spin are obtained. The calculation shows that the stronger competition between the pairing and anti-pairing effects and the SU（3） symmetry broking more seriously exist in the stable chiral structure.
基金①The project supported partly by the National Education Commission Foundationthe National Natural Science Foundation of China
文摘High Spin states of the odd-odd <sup>162</sup>Lu nucleus have been studied via <sup>147</sup>Sm(<sup>19</sup>F,4nγ)reaction at90 MeV beam energy.Level scheme for yrast band based on π[h<sub>11/2</sub>]v[i<sub>13/2</sub>]configuration was estab-lished,for the first time,up to I<sup>π</sup>=23<sup>-</sup>.This band shows the signature inversion in energy before band-bending generally appeared in this mass region.It is stressed that the signature splitting in <sup>162</sup>Lu is biggerthan that in <sup>160</sup>Tm which could be understood in the framewrok of the cranked shell model if taking posi-tire γ-triaxiality into account.
基金National Natural Sciences Foundation of China(10505025,10775158)Major State Basic Research Development Program of China(2007CB815005)Chinese Academy of Sciences
文摘Signature inversion in odd-odd nuclei is investigated by using a proton and a neutron coupling to the coherent state of the core. Two parameters are employed in the Hamiltonian to set the energy scales of rotation,neutron-proton coupling and their competition. Typical level staggering is extracted from the calculated level energies. The calculation can approximately reproduce experimental signature inversion. Signature inversion is attributed to the rotational motion and neutron-proton residual interaction having reversed signature splitting rules. It is found signature inversion can appear at axially symmetric shape and high-K band.
基金the National Natural Science Foundation of China(Grant No.10025525)Japan STA Scientist Exchange Program(Grant No.1998-21)+2 种基金JSPS Invitation Fellowship(Grant No.L00515)the Major State Basic Research Development Program of China(Grant No.G20000774)the Chinese Academy of Sciences
文摘High-spin states in182Au have been produced and studied via the152Sm(35Cl,5nγ)182Au reaction. The level scheme consisting of the πh 9/2?νi 13/2 and πi 13/2?νi 13/2 bands has been established for the first time. The low spin signature inversion in both bands has been found. The observed signature inversion phenomena can be interpreted qualitatively using the pairing and deformation self-consistent cranked Wood-Saxon calculations.
文摘采用热压法制备了奇–奇数聚酰胺(PA)1111铁电薄膜,研究了PA1111的铁电性,并通过探讨极化温度(Tp)、极化时间(tp)和极化电场强度(Ep)对PA1111压电应变常数(d33)的影响来研究PA1111的压电性。结果表明,在频率0.1 Hz,外加电场150 MV/m的条件下,PA1111的矫顽电场(Ec)约为75 MV/m,剩余极化强度(Pr)达47 m C/m2。在相同的测试条件下,PA1111的Ec接近于PA11,但Pr比PA11的低,两者的压电性能相差不大。极化工艺研究表明,随着tp增加,PA1111的d33先迅速增大后趋于稳定;随着Ep的增加和Tp的升高,PA1111的d33随之增大。在Tp为75℃,tp为30 min,Ep为50 MV/m的条件下,PA1111的d33达-3.9 p C/N,压电电压常数达-169 m V·m/N。
