α-核弹性散射的全局密度依赖性α-核子相互作用

IF 8.3 4区物理与天体物理 Q1 Physics and Astronomy

Progress of Theoretical and Experimental Physics Pub Date : 2023-12-06 DOI:10.1093/ptep/ptad148

T Furumoto, K Tsubakihara, S Ebata, W Horiuchi

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引用次数: 0

摘要

我们提供了一个全局密度依赖的 4He 核子（DD-αN）相互作用，以构建宽入射能量范围内的α-核子光学模型势（OMP）。DD-αN 相互作用的全局参数是基于质子-4He OMP 得到的，它很好地再现了入射能量为 12.04-500 MeV/核子的弹性散射截面数据。我们通过折叠程序推导出了α-核电势，并利用目前的 DD-αN 相互作用通过微观均场模型获得了点核子密度。我们从现象上固定了 DD-αN 相互作用的密度依赖性，以重现 16O、40Ca、58Ni、90Zr 和 208Pb 靶在 E/ A = 10-342.5 MeV 下的α-核弹性散射截面数据。我们还展示了总反应截面，这有助于固定一个自由参数，即α-核势虚部的重正化因子。最后，我们展示了一些例子，清楚地证明了目前 DD-αN 方法的有效性和强大功能。

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Global density-dependent α-nucleon interaction for α-nucleus elastic scattering

We provide a global density-dependent 4He-nucleon (DD-αN) interaction to construct the α-nucleus optical model potential (OMP) in a wide range of incident energies. The global parametrization for the DD-αN interaction is obtained based on the proton-4He OMP which reproduces the elastic scattering cross-section data very well in the incident energies of 12.04–500 MeV per nucleon. We derive the α-nucleus potential by a folding procedure with the point-nucleon density obtained by a microscopic mean-field model using the present DD-αN interaction. The density dependence of the DD-αN interaction is fixed phenomenologically to reproduce the α-nucleus elastic scattering cross-section data by the 16O, 40Ca, 58Ni, 90Zr, and 208Pb targets at E/ A = 10–342.5 MeV. We also show the total reaction cross sections, which are helpful in fixing one free parameter, the renormalization factor for the imaginary part of the α-nucleus potential. Lastly, we show some examples, which clearly demonstrate the validity and power of the present DD-αN approach.

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来源期刊

Progress of Theoretical and Experimental Physics PHYSICS, MULTIDISCIPLINARY-PHYSICS, PARTICLES & FIELDS

CiteScore

12.00

自引率

5.70%

发文量

148

审稿时长

17 weeks

期刊介绍： Progress of Theoretical and Experimental Physics (PTEP) is an international journal that publishes articles on theoretical and experimental physics. PTEP is a fully open access, online-only journal published by the Physical Society of Japan. PTEP is the successor to Progress of Theoretical Physics (PTP), which terminated in December 2012 and merged into PTEP in January 2013. PTP was founded in 1946 by Hideki Yukawa, the first Japanese Nobel Laureate. PTEP, the successor journal to PTP, has a broader scope than that of PTP covering both theoretical and experimental physics. PTEP mainly covers areas including particles and fields, nuclear physics, astrophysics and cosmology, beam physics and instrumentation, and general and mathematical physics.