Nguyen Hoang Phuc, Nguyen Tri Toan Phuc, Do Cong Cuong
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引用次数: 0
Abstract
We employ the single folding model to calculate the optical potential (OP) for the \(p\)+\(^{16}\)O scattering system, in which the exchange term of the OP is nonlocal. In most studies, this term is approximated to a local form to simplify the calculations. In this work, the folding OP, including the nonlocal exchange term, is constructed based on the CDM3Y3 effective nucleon-nucleon (NN) interaction. The Schrödinger equation for the nucleon-nucleus scattering with the nonlocal OP is solved exactly using the Lagrange-mesh R-matrix method. By comparing the scattering cross sections calculated with the nonlocal potential and the localized approximation, we can assess the impact of the nonlocality effects in proton-nucleus elastic scattering. The calculated results demonstrate that the nonlocality effect of the OP significantly influences the low-energy elastic scattering cross sections of \(p\)+\(^{16}\)O .
我们采用单折叠模型来计算\(p\)+\(^{16}\)O 散射系统的光学势（OP），其中 OP 的交换项是非局部的。在大多数研究中，为了简化计算，该交换项被近似为局部形式。在这项工作中，折叠 OP（包括非局部交换项）是基于 CDM3Y3 有效核子-核子（NN）相互作用构建的。利用拉格朗日网格 R 矩阵法精确求解了带有非局部 OP 的核-核散射的薛定谔方程。通过比较用非局域势和局域近似计算的散射截面，我们可以评估非局域效应在质子-核弹性散射中的影响。计算结果表明，OP 的非局域效应显著影响了 \(p\)+\(^{16}\)O 的低能弹性散射截面。
期刊介绍：
The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.
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