@article{Kumar_Khachi_Sastri_2022, title={Phase Shift Analysis for Neutron-Alpha Elastic Scattering Using Phase Function Method with Local Gaussian Potential}, volume={9}, url={https://jnp.chitkara.edu.in/index.php/jnp/article/view/317}, DOI={10.15415/jnp.2022.92032}, abstractNote={<p><strong>Background:</strong> The nucleon-nucleus scattering has been studied using Gaussain potential with<br />spin-orbit term of Thomas type to fit the experimental scattering phase shifts (SPS). Recently,<br />Hulthen potential without spin-orbit term has been utilised for studying α–nucleon scattering with phase function method (PFM).<br /><strong>Purpose:</strong> The main objectives of this paper are:<br />1. To obtain the best possible interaction potentials that best describe the neutron-α elastic<br />SPS in various channels.<br />2. To compute the partial cross-sections for scattering p-states and the total cross-section for<br />the reaction.<br /><strong>Methods:</strong> The local interaction potential is modeled using Gaussian function. The non-local<br />spin orbit term is chosen to be proportional to derivative of local potential. The phase function method has been numerically solved using 5th order Runge-Kutta method to compute the SPS. The model parameters are varied in an iterative fashion to minimise the mean absolute percentage error (MAPE) w.r.t. the experimental SPS.<br /><strong>Results:</strong><br />1. The SPS for S, P and D channels have been obtained with MAPE values less than 3%.<br />2. The partial cross-sections for p 1/2 and p 3/2 have been plotted and the respective resonance energies and FWHM have been found to be in reasonable agreement with values in literature.<br />3. The total cross-section for the reaction has been determined and found to be matching well with experimental findings.<br /><strong>Conclusions:</strong> Gaussian potential with associated spin-orbit term has been shown to be a<br />reasonably good choice for explaining the n-α scattering reaction.</p>}, number={2}, journal={Journal of Nuclear Physics, Material Sciences, Radiation and Applications}, author={Kumar, Lalit and Khachi, Anil and Sastri, O.S.K.S}, year={2022}, month={Jun.}, pages={215–221} }