کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9861237 | 1528989 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cross sections and fragment distributions from neutrino-induced fission on r-process nuclei
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We study neutrino-induced processes that might contribute to the observed patterns in the r-process abundances in low-metallicity, old galactical halo stars. The neutrino-nucleus interaction is calculated within the random phase approximation, while the decay of excited levels in the daughter nucleus is followed via the evaporation-fission code ABLA. We calculate the fission cross sections for selected neutron-rich progenitor nuclei with Zprog>80. More importantly, we calculate the mass and charge distributions of the fission fragments as well as the number of neutrons set free in the neutrino-induced reactions. We particularly study a sample of nuclei with Aprog>200 representing r-process progenitors during their decay towards the valley of stability after the r-process freeze-out.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 616, Issues 1â2, 9 June 2005, Pages 48-58
Journal: Physics Letters B - Volume 616, Issues 1â2, 9 June 2005, Pages 48-58
نویسندگان
A. KeliÄ, N. Zinner, E. Kolbe, K. Langanke, K.-H. Schmidt,