کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10725352 1034114 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Half-lives of ground and isomeric states in 97Cd and the astrophysical origin of 96Ru
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Half-lives of ground and isomeric states in 97Cd and the astrophysical origin of 96Ru
چکیده انگلیسی
First experimental evidence for a high-spin isomer (25/2+) in 97Cd, a waiting point in the astrophysical rapid proton capture process, is presented. The data were obtained in β-decay studies at NSCL using the new RF Fragment Separator system and detecting β-delayed protons and β-delayed γ rays. Decays from ground and isomeric states were disentangled, and proton emission branches were determined for the first time. We find half-lives of 1.10(8) s and 3.8(2) s, and β-delayed proton emission branches of 12(2)% and 25(4)% were deduced for the ground and isomeric states, respectively. With these results, the nuclear data needed to determine an rp-process contribution to the unknown origin of solar 96Ru are in place. When the new data are included in astrophysical rp-process calculations, one finds that an rp-process origin of 96Ru is unlikely.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 699, Issue 3, 9 May 2011, Pages 141-144
نویسندگان
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