Neutron-nucleus spin-spin interaction studied with polarized neutrons and polarized 59Co nuclei

Spin-spin interaction between polarized neutrons and polarizedAl27,Co59, andNagadi1, Weisel2, Walter3 et al. 2004Phys. Rev. C2000View full textAdd to dashboardCite

“…All of the analyses were performed with the ECIS code [30] run in the external input mode. The results gave parameter sets that were similar for 27 Al, 59 Co, and 93 Nb using either spherical (DOM) or deformed (CCM) central and spin-orbit potentials. Figure 3 displays the ss predictions using our DOMs and CCMs.…”

“…The central and spin-orbit potentials, U, were taken from Ref. [15] for 27 Al and 59 Co and from the present work for 93 Nb. For each nucleus independently, grid searches of the spin-spin potential parameters were done in order to achieve the best possible representations of existing ss measurements.…”

“…In the present work, the central spin-spin potential was determined from the energy dependence exhibited in spinspin cross sections measured over a broad energy range for 27 Al [5,6], 59 Co [4,[26][27][28], and 93 Nb [6,29]. For this purpose, Eqs.…”

“…The differential cross-section data included that of Ref. The DOM model was built using grid search techniques similar to those described in the companion paper [15] for 27 Al and 59 Co. The potential parameters for 93 Nb are given in Table I, where we use the notation and definitions introduced in Ref.…”

“…Even though the spin-spin interaction is small in magnitude, it is important to know its size. The aim of the present work is to infer the strength and radial shape of this potential component from phenomenological optical potential analyses of neutron transmission measurements available for the medium mass nuclei 27 Al, 59 Co, and 93 Nb.…”