Superdeformed Bands in ^(167)Lu and ^(171)Ta

High spin states of the odd-proton nucleus ^(167)Lu have been studied via ^(152)Sm(^(19)F,4n)^(167)Lu reaction at 87MeV beam energy.A weakly populated new rotationa1 band has been observed and assigned as i13/2 proton 1/2^(+)[660] band.This new band and the 1/2^(+)[660] band in ^(171)Ta from the early work are classified as superdeformed bands with triaxiality.

High Spin States of ^(113)In

Level structures of 113 In are studied through the fusion-evaporation reaction 110 Pd(7 Li,4n)113In at a beam energy of 50 Me V.Two new bands are established for the first time.Here the ΔI =2 band based on proton excitation is assigned to the πg-29/2 (0)υh211/2d5/2 configuration.In addition,the backbending associated with the additional aligned h11/2 neutron pair is found in the negative parity yrast band.The experimental results are compared with self-consistent tilted axis cranking relativistic mean field calculations.Several decay paths of theπ h11/2intruder band are established,by which the level energies and spins of the πh11/2 intruder band are determined.The bandcrossing delay of the πh11/2 intruder bands around the Z =50 shell and the dynamic moment of inertia of the πg-19/2 (0) υh^(2)_(11/2) bands in 113,115,117,119 In are studied systematically.

Hyperbolic Dependence of Moment of Inertia onω2 in Bands Involving vi13/2 Orbital and its Application in Configuration Identification

The so-called hyperbolic dependence of apparent moment of inertia on square of rotational frequency is developed to the bands involving^13/2 quasineutron around A-60 lighter rare-earth region.This can be explained as a characteristic of strongly Coriolis mixing in the high-j unique-parity bands.As applications of such an effectj the previously proposed assignments of band x of^(160)Ho,π1/2^(-)[541]■vi_(13/2)band of^(170)Ta,as well as band B of 168Lu have been reviewed respectively.

Low-Spin Identical Bands in Non-adjacent Odd-A and Even-Even Nuclei

A great number of low-spin identical bands in pairs of odd-A and their non-adjacent even-even nuclei in a region of A=150-190 are found,this fact seems to support the idea that the occurrence of identical bands in neighboring odd-A and even-even nuclei is caused by the cancellation of various factors which influence the moments of inertia of nuclei.

Observation of Low-Lying and Linking Transitions in ^(124)Cs

The level states of the nucleus ^(124)Cs have been populated through the ^(116)Sn(^(11) B,3n)reaction at a beam energy of 45MeV,provided by the HI-13 tandem accelerator of the China Institute of Atomic Energy.A number of low-lying states are constructed.The level states in theπh_(11/2)νg_(7/2) side band are extended down to lower spin by one h.The level energies and spins in the rotational bands are determined through the establishment of various connections,which confirm the spin assignment of the yrast band in ^(124)Cs based on excitation energy systematics.It is revealed that with the present spin assignment,theπh_(11/2)νg_(7/2) side band shows signature inversion at low-spin region and the inversion occurs at a spin of about 16h.

Signature Inversion of the Semi-decoupled Band in the Odd-Odd Nucleus ^(170)Ta

The high-spin states of the odd-odd nucleus 170Ta have been studied by the 150Gd(19F,4n)170Ta reaction at the beam energy of 97 MeV.The α=1 sequence of the semi-decoupled band has been pushed to higher-spin states and the signature inversion point was observed at 19.5ħ.The results are compared with those of the neighboring odd-odd nuclei.

LEVEL STRUCTURE OF ^(140)Ce FROM THE DECAY OF ^(140)La

Gamma-gamma coincidence evidences are presented in this paper to confirm the existence of levels 3394.5keV and 3473.7keV in ^(140)Ce.The level 3520.8keV in ^(140)Ce should be discarded because of the identification of the peak at 1924keV as a pure sum-peak of two strong gamma rays at 328kev and 1596keV.