194 research outputs found
Estimating total cross sections from neutron-nucleus collisions using a simple functional form
Total cross sections for neutron scattering from nuclei, with energies
ranging from 10 to 600 MeV and from many nuclei spanning the mass range 6Li to
238U, have been analyzed using a simple, three-parameter, functional form. The
calculated cross sections are compared with results obtained by using
microscopic (g-folding) optical potentials as well as with experimental data.
The functional form reproduces those total cross sections very well. When
allowance is made for Ramsauer-like effects in the scattering, the parameters
of the functional form required vary smoothly with energy and target mass. They
too can be represented by functions of energy and mass.Comment: 9 pages, 6 figures. Conference paper. Presented in the Australian
Institute of Physics (AIP) 17th National Congress 2006 (Brisbane, 3-8
December
Complementary reaction analyses and the isospin mixing of the 4- states in 16O
Data from the inelastic scattering of electrons, and of intermediate energy
protons and pions leading to ``stretched'' configuration 4- states near 19 MeV
excitation in 16O as well as from charge exchange (p,n) scattering to an
isobaric analogue (4-) state in 16F have been analyzed to ascertain the degree
of isospin mixing contained within those states and of the amount of
d_{5/2}-p_{3/2}^{-1} particle-hole excitation strength they exhaust. The
electron and proton scattering data have been analyzed using microscopic models
of the structure and reactions, with details constrained by analyses of elastic
scattering data.Comment: 25 pages, 12 figure
- …