05 خرداد 1403
علي مقدسي

علی مقدسی

مرتبه علمی: استادیار
نشانی: دانشکده علوم پایه،گروه فیزیک
تحصیلات: دکترای تخصصی / فیزیک
تلفن:
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
Two-helium radiative capture process and the 8Be nucleus at settler energies
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Nucleosynthesis · Nuclear reactions · Radiative capture · Two-α systems
سال
2014
مجله ASTROPHYSICS AND SPACE SCIENCE
پژوهشگران علی مقدسی

چکیده

Alpha radiative capture reactions offers the opportunity to study nuclear processes of astrophysical interest. Most of the existing data on these processes have been gained by means of gamma-ray spectroscopy, where the measurements are very difficult due to the low cross sections and the relatively high background in the detectors. We have calculated the two-alpha radiative capture process and excitations of 8Be nuclei interacting using current conservation realistic two- and three-nucleon potentials, at settler energies. We have presented the results of Faddeev-type calculations for current conservation of two- and three-body interactions to cluster nuclear reactions. Our results for cross sections are found to be 128 (140) nanobarn for the current conservation two-body (two-body and three-body) interactions, at the resonance energy with an 14 % (6 %) accuracy in comparison with the recent experimental data, respectively. The results for B (E2) value of 8Be is also found to be 21.7 (20.8) e2f m4, in comparison with the very recent experimental data with an error of 7 % (2 %). Our calculation show that the bulk energies are corrected by improved few-body potentials.