2026/7/22
Hasan Khalili

Hasan Khalili

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0002-2839-4158
Education: PhD.
H-Index:
Faculty: Science
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E-mail: h-khalili [at] araku.ac.ir
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Research

Title
Comprehensive Theoretical Study of the 17O(p,gamma)18F Radiative Capture Reaction at Astrophysical Energies
Type
JournalPaper
Keywords
Potential model  Radiative capture  Electromagnetic transition  S factor
Year
2025
Journal Iranian Journal of Science
DOI
Researchers Hasan Khalili ، Masoumeh Dalvand

Abstract

The 17O (p, c)18F radiative capture reaction, a key driver of stellar nucleosynthesis, is comprehensively investigated at astrophysically relevant energies using a sophisticated theoretical approach. The Woods-Saxon potential model is employed to accurately deduce the cross-section for this reaction, which is essential for modeling hydrogen burning and isotope synthesis in stars. The calculated astrophysical S factor, a critical parameter for analyzing such reactions, exhibits excellent agreement with available experimental data and predictions from other models. Moreover, the electric dipole (E1) transition strength, governing the astrophysical S factor, is computed within the 0-500 keV energy range. Extrapolation of the S factor to zero center-of-mass energy yields a value of 4.807keV.b for the dominant E1 transition through the 18F (1 excited state to the ground state (1?), consistent with previous studies. To investigate correlated transitions, calculations of S (0) values have been performed for excited state transitions, specifically from the (1-) state to the (2?) state, the 1-state to the 3? state, and the (1-) state to the 1? state. Additionally, S factor for E2 transitions have also been calculated. These results provide invaluable nuclear data inputs for modeling stellar nucleosynthesis processes.