Mean-field calculations of proton and neutron distributions in Sr, Xe and Ba isotopes

The mean-square nuclear radii, quadrupole moments and deformation parameters of the proton and neutron distributions are evaluated using the mean-field Hamiltonians with the Gogny and Skyrme forces. The results are compared with the estimates obtained within the relativistic mean-field theory and with the experimental data. The calculations were performed for a few sets of the Skyrme forces and for a wide range of the neutron numbers of Sr, Xe and Ba isotopes. A significant difference was found in the deformation of the proton and neutron distributions, especially for Sr isotopes.

[1]  A. H. Wapstra,et al.  The 1993 atomic mass evaluation: (I) Atomic mass table , 1993 .

[2]  H. Toki,et al.  Systematic study of Sr isotopes in the relativistic mean field theory , 1993 .

[3]  P. Ring,et al.  rho meson coupling in the relativistic mean field theory and description of exotic nuclei , 1993 .

[4]  T. Egidy,et al.  Signature of a neutron halo in 232Th from antiproton absorption , 1993 .

[5]  J. Pearson,et al.  Thomas-Fermi approach to nuclear-mass formula. (IV). The ETFSI-1 mass formula , 1992 .

[6]  D. S. Brenner,et al.  Retardation of B(E2; 01+ → 21+) rates in 90–96Sr and strong subshell closure effects in the A ~ 100 region , 1991 .

[7]  Ramsay,et al.  Erratum: Systematics of nuclear ground state properties in 78-100Sr by laser spectroscopy , 1990, Physical review. C, Nuclear physics.

[8]  Peter Ring,et al.  Relativistic mean field theory for finite nuclei , 1990 .

[9]  C. Nestor,et al.  Predictions of B(E2; 01+ → 21+) values for even-even nuclei , 1989 .

[10]  L. Robledo,et al.  Microscopic study of the octupole degree of freedom in the radium and thorium isotopes with gogny forces , 1989 .

[11]  W. Myers,et al.  Geometrical Relationships of Macroscopic Nuclear Physics , 1988 .

[12]  C. Vries,et al.  Nuclear charge-density-distribution parameters from elastic electron scattering , 1987 .

[13]  D. Sprung,et al.  Electromagnetic Spin-Orbit Contribution to the C6 Transition in 50Ti( e, e') , 1987 .

[14]  L. Robledo,et al.  Stable octupole deformation in some actinide nuclei , 1987 .

[15]  W. T. Milner,et al.  Transition probability, B(E2)up-arrow, from the ground to the first-excited 2/sup +/ state of even-even nuclides , 1987 .

[16]  J. Berger,et al.  Microscopic analysis of collective dynamics in low energy fission , 1984 .

[17]  J. Walecka,et al.  The Relativistic Nuclear Many Body Problem , 1984 .

[18]  J. Negele,et al.  Contributions of neutrons to elastic electron scattering from nuclei , 1972 .

[19]  D. Brink,et al.  Hartree-Fock Calculations with Skyrme's Interaction. I. Spherical Nuclei , 1972 .

[20]  T. Skyrme.  The effective nuclear potential , 1958 .

[21]  T. Skyrme.  CVII. The nuclear surface , 1956 .