1 - IAEA Nuclear Data Services

- 87 -
the hypothesis of an inert axially symmetric even-even core
plus a single nucleón which can be excited from a self-con­
sistent Hartree-Fock orbit (cp^) to another (cp'^)» Thus the
model allows to take into account the inelastic diffusion pro­
cess from levels belonging to rotational bands different from
the ground state band.
The diffusion cross-sections will be calculated with the DWBA
and coupled channel methods.
Photoreaction calculations in the giant resonance energy region
for doubly closed shell light nuclei
The particle-hole model with continuum excitation by means of
the photoreactions cross-sections of C and Ca has been
analyzed [y'j and extended to the calculations of Si photo-
reactions.
Results of this analysis have been presented at the International
Conference on Nuclear Structure - Tokyo, September 1967 [8]«
In fig. 3 is given the total photo-absorption cross-section of
po -i p j¡r\ po
Si. The data on 0, Ca, Si photoreactions obtained
assuming a charge dependence of the interaction have been
compared with the charge independent data. A strong effect
of the Coulomb interaction has been observed.
Calculations with a finite-range force and a full antisymmetri-
zation of the interaction are envisaged.
Scattering cross-sections of even-even nuclei with a microscopic
model
A coupled-channel programme for the scattering analysis of even-
even nuclei described by a microscopic wave-function has been
written for IBM-7094 computer. The programme has been checked
in the case of the DWBA on the results given by Schaepper (*'
of Saclay (S.P.T.).
Private communication.