Semi-microscopic description of the double backbending in some deformed even-even rare earth nuclei

作者: A A Raduta , R Budaca

DOI: 10.1088/0954-3899/40/2/025109

关键词:

摘要: A semi-microscopic model to study the neutron and proton induced backbending phenomena in some deformed even-even nuclei from rare earth region, is proposed. The space of particle-core states defined by angular momentum projection a quadrupole product state. are described mixing four rotational bands, set projected states, Hamiltonian describing paired particles moving mean field interacting with phenomenological core. ground band corresponds configuration where all while other bands built on one or/and broken pair. Four which present second anomaly observed moments inertia successfully treated within proposed model.

参考文章(50)
Ian Stuart Towner, B. Castel, Modern theories of nuclear moments ,(1990)
A. Jungclaus, B. Binder, A. Dietrich, T. Härtlein, H. Bauer, Ch. Gund, D. Pansegrau, D. Schwalm, J. L. Egido, Y. Sun, D. Bazzacco, G. de Angelis, E. Farnea, A. Gadea, S. Lunardi, D. R. Napoli, C. Rossi-Alvarez, C. Ur, G. B. Hagemann, Backbending region study in Dy-160,Dy-162 using incomplete fusion reactions Physical Review C. ,vol. 66, pp. 014312- 014312 ,(2002) , 10.1103/PHYSREVC.66.014312
A. A. Raduta, A. Escuderos, Amand Faessler, E. Moya de Guerra, P. Sarriguren, Two neutrino double- β decay in deformed nuclei with an angular momentum projected basis Physical Review C. ,vol. 69, pp. 064321- ,(2004) , 10.1103/PHYSREVC.69.064321
G. Gneuss, U. Mosel, W. Greiner, A new treatment of the collective nuclear hamiltonian Physics Letters B. ,vol. 30, pp. 397- 399 ,(1969) , 10.1016/0370-2693(69)90469-9
Gotthard Gneuss, Walter Greiner, Collective potential energy surfaces and nuclear structure Nuclear Physics A. ,vol. 171, pp. 449- 479 ,(1971) , 10.1016/0375-9474(71)90596-3
A.A. Rǎduţǎ, V. Ceauşescu, A. Oheorghe, R.M. Dreizler, Phenomenological description of three interacting collective bands Nuclear Physics A. ,vol. 381, pp. 253- 276 ,(1982) , 10.1016/0375-9474(82)90143-9
F. Iachello, D. Vretenar, Physics of high-spin states in nuclei Physical Review C. ,vol. 43, ,(1991) , 10.1103/PHYSREVC.43.R945
Amand Faessler, M. Ploszajczak, Anomaly of the moment of inertia in 158Er above the backbending region Physics Letters B. ,vol. 76, pp. 1- 4 ,(1978) , 10.1016/0370-2693(78)90083-7