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Analysis of $\alpha$ + $^{40}$Ca and $\alpha$ + $^{58}$Ni Elastic Scatterings at $E_{lab}$ = 240 MeV

New Phys.: Sae Mulli
Published online October 11, 2018;  
© 2018 New Physics: Sae Mulli.

Yong Joo Kim*
Received September 11, 2018; Accepted October 10, 2018.
Abstract
The elastic scatterings for $\alpha $ + $^{40}$Ca and $\alpha $ + $^{58}$Ni systems at $E_{lab}$ = 240 MeV have been analyzed within the framework of the Coulomb-modified Glauber model using two kinds of Gaussian density parameters for the target nuclei. The first one is to use Gaussian density parameters obtained from root-mean-square radius. The second one is to use parameters calculated by matching the Gaussian density to the 2-parameter Fermi density. The results with surface-matched Gaussian densities provided reasonably well agreement to the experimental data compared with the results without matching ones. The oscillatory structures observed in the angular distributions of both system can be interpreted as being due to the strong interference between the near-side and the far-side scattering amplitudes. The differences between the phase shifts obtained from two methods are examined. We also investigate the effect of these differences on the (differential and reaction) cross sections, transmission functions and strong absorption radii.


November 2018, 68 (11)
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