论文信息 - The onset of deformation in the neutron-rich Ba isotopes

The onset of deformation in the neutron-rich Ba isotopes

The isotopes 142,144Ba, produced by the fission-product mass separator OSTIS at the Institut Laue-Langevin, has been investigated via on-line gamma - gamma angular correlation measurements. The spin assignments deduced allow the effects of increasing neutron number in the neutron-rich Ba isotopes to be studied, and clearly identify the onset of deformation in this region.

[1] O. Scholten,et al. Interacting boson model of collective nuclear states III. The transition from SU(5) to SU(3) , 1978 .

[2] K. Wünsch. An on-line mass-separator for thermically ionisable fission products: OSTIS , 1978 .

[3] J. Tuli. Nuclear Data Sheets for A = 142 , 1978 .

[4] T. Otsuka,et al. Shell model description of interacting bosons , 1978 .

[5] A. Arima,et al. COLLECTIVE NUCLEAR STATES AS SYMMETRIC COUPLINGS OF PROTON AND NEUTRON EXCITATIONS , 1977 .

[6] W. C. Schick,et al. Levels inBa140populated in the decay of 64-secCs140 , 1974 .

[7] K. Kumar. Nuclear Shapes, Energy Gaps and Phase Transitions , 1972 .

[8] J. R. McConnell,et al. Gamma-Ray Studies of the Decays of Xe-142, Cs-142, Ba-142, and La-142 , 1971 .

[9] S. G. Thompson,et al. Determination of the Charge and Mass Distribution in the Fission of Cf-252 , 1971 .

[10] M. Sakai. Quasi-ground, quasi-beta, and quasi-gamma bands , 1970 .