Eur. Phys. J. A (2008) 36: 219-226
https://doi.org/10.1140/epja/i2008-10579-4

Regular Article - Theoretical Physics

Coupled-channel and distorted-wave Born approximation analyses for 25.1 MeV and 32.5 MeV energies of p- ⁴⁰Ar inelastic scattering

¹ Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, 55139, Samsun, Turkey
² Department of Physics, Rize Faculty of Arts and Sciences, Rize University, Rize, Turkey

Received: 27 January 2008
Accepted: 15 April 2008
Published online: 8 May 2008

Abstract

The optical model parameters, the coupled-channel parameters and excitation mode β₂ , β₃ and β₅ deformation parameters corresponding to the best fit to the experimental differential cross-sections and the analyzing powers data for the p- ⁴⁰Ar elastic and inelastic scattering were determined. The ambiguity in the spin and parity of the 4.43±0.05 MeV state of ⁴⁰Ar was solved by the assignment of the 5^- value for this state. Also, for the ⁴⁰Ar nucleus a first-degree vibrational model was found to be suitable.