High spin states of the odd-odd nucleus 92Nb are investigated using the S2Se （14N, 4n）92Nb reaction at a beam energy of 54MeV. The level scheme of the 92Nb was extended up to Jπ=（16＋） at about 7.3 MeV and Jπ=（...High spin states of the odd-odd nucleus 92Nb are investigated using the S2Se （14N, 4n）92Nb reaction at a beam energy of 54MeV. The level scheme of the 92Nb was extended up to Jπ=（16＋） at about 7.3 MeV and Jπ=（21-） at about 9.7MeV. According to systematic analyses and a comparison with the neighboring nucleus, the higher spin states could be interpreted by the multi-particle excitations in the π（fs/2,P3/2,p1/2,gg/2）@v（p1/x,gg/2,d5/2, g7/2） configuration space.展开更多
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 exc...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.展开更多
Excited states in^(120)I are investigated utilizing in-beam gamma-ray spectroscopy following the^(114)Cd(^(11)B,5n)reaction at 70 MeV bombarding energy.A level scheme is constructed with states up to 9 MeV.The levels ...Excited states in^(120)I are investigated utilizing in-beam gamma-ray spectroscopy following the^(114)Cd(^(11)B,5n)reaction at 70 MeV bombarding energy.A level scheme is constructed with states up to 9 MeV.The levels are classified into several bands and their possible configurations at low spins are discussed briefly.Based on the linking transitions between different bands at higher spins,the excitation energy of the previously reported T1/2=53 min isomer is ascertained to be 72 keV.Evidence showing the existence of an isomer at an excitation energy of 6.4 MeV is presented.展开更多
The high-spin states of 160Lu are populated by the fusion-evaporation reaction 144Sm(19F,3n)160 Lu at beam energies of 90 and 106 Me V.A new level scheme of 160Lu is established.A possible isomeric state based on the ...The high-spin states of 160Lu are populated by the fusion-evaporation reaction 144Sm(19F,3n)160 Lu at beam energies of 90 and 106 Me V.A new level scheme of 160Lu is established.A possible isomeric state based on the πh11/2 (0) υh9/2 configuration is observed.The new decoupled band with the configuration of πd3/2[411]1/2^(+) (0)υi13/2[660] 1/2^(+) is established,and the configurations of these similar decoupled bands in the neighboring odd-odd 162-166 Lu nuclei are suggested.A positive parity coupled band is assigned as the πd5/2[402]5/2^(+)(0)υi13/2[660]1 /2^(+)configuration.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11075064, 10927507, 11075214, 10675171, 11175259.
文摘High spin states of the odd-odd nucleus 92Nb are investigated using the S2Se （14N, 4n）92Nb reaction at a beam energy of 54MeV. The level scheme of the 92Nb was extended up to Jπ=（16＋） at about 7.3 MeV and Jπ=（21-） at about 9.7MeV. According to systematic analyses and a comparison with the neighboring nucleus, the higher spin states could be interpreted by the multi-particle excitations in the π（fs/2,P3/2,p1/2,gg/2）@v（p1/x,gg/2,d5/2, g7/2） configuration space.
基金Supported by the National Basic Research Program of China under Grant No 2007CB815005the National Natural Science Foundation of China under Grant No 11075064the Specialized Research Fund for the Doctoral Programme of Higher Education of China under Grant No 20050183008.
文摘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.
基金Supported by the National Natural Science Foundation of China under Grant No 10675053the National Basic Research Program of China under Grant No 2007CB815005the Research Fund for the Doctoral Program of Higher Education of China under Grant No 20120061110008.
文摘Excited states in^(120)I are investigated utilizing in-beam gamma-ray spectroscopy following the^(114)Cd(^(11)B,5n)reaction at 70 MeV bombarding energy.A level scheme is constructed with states up to 9 MeV.The levels are classified into several bands and their possible configurations at low spins are discussed briefly.Based on the linking transitions between different bands at higher spins,the excitation energy of the previously reported T1/2=53 min isomer is ascertained to be 72 keV.Evidence showing the existence of an isomer at an excitation energy of 6.4 MeV is presented.
基金Partially supported by the National Natural Science Foundation of China under Grant Nos 11075064 and 21101129the National Basic Research Program of China under Grant No 2007CB815005the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No 20050183008.
文摘The high-spin states of 160Lu are populated by the fusion-evaporation reaction 144Sm(19F,3n)160 Lu at beam energies of 90 and 106 Me V.A new level scheme of 160Lu is established.A possible isomeric state based on the πh11/2 (0) υh9/2 configuration is observed.The new decoupled band with the configuration of πd3/2[411]1/2^(+) (0)υi13/2[660] 1/2^(+) is established,and the configurations of these similar decoupled bands in the neighboring odd-odd 162-166 Lu nuclei are suggested.A positive parity coupled band is assigned as the πd5/2[402]5/2^(+)(0)υi13/2[660]1 /2^(+)configuration.
