Optical-Model Information Provided by Scattering from Aligned Targets

The influence of the spectroscopic deformation of Li-isotopes on their interaction with51V

“…A possible influence of deformation on the interaction can then only be deduced from a comparison of at least two different projectile-target systems with a definite change in projectile or target deformation. By performing experiments using this idea the influence of the spectroscopic deformation of holmium on the total neutron cross section [6,7] and on p-and ~-backscattering [8,9] was demonstrated. Another difficulty is that the contribution of the grazing partial waves to the interaction is most sensitive to the features of the interaction barrier.…”

Influence of the Static Deformation ofLi7on theLiMöbius1, Böttger2, Egelhof3 et al. 1981Phys. Rev. Lett.22090View full textAdd to dashboardCite

“…7 In a total-reaction-cross-section experiment the beam axis is the only distinguishable axis and is therefore chosen as the quantization axis. If a & and a r denote the reaction cross sections determined with a completely aligned beam of spin--f particles and an unpolarized beam, respectively, the quantities to be determined in an experiment are the difference Acr r =cr al r -<7 r or the second-rank tensor analyzing power 8 (1)…”

“…An accelerated beam of aligned 7 Li ions (E Li^2 4 MeV) is available at the University of Heidelberg EN Tandem accelerator. 9 This beam is suitable for investigating the dependence of the reaction cross section on the deformation of the projectile, since the 7 Li nucleus has a large oblate deformation.…”

“…1 with open circles as a function of E and of 1/E, respectively. The data are shown twice to display more clearly certain features of the data and of a model to be dis- were measured for the quasielastic scattering (elastic plus inelastic scattering to 7 Li, £ x = 0.48 MeV and 51 V, E x = 0.32 MeV). From these data o r as well as Aa r were determined 12 by applying the sum-of-differences method 15 to the angular distributions of the quasielastic scattering obtained with unpolarized and aligned beams.…”

“…The deformation shown is the spectroscopic deformation. Indicated are the grazing trajectories for both unpolarized and aligned7 Li beams and the change A6 graz in the impact parameter.…”