کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8198928 | 1528951 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Proton single-particle states in the neutron-rich 23F nucleus
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
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چکیده انگلیسی
The proton shell structure in neutron-rich fluorine 23F was investigated using the in-beam γ-ray spectroscopy technique via the proton transfer reaction onto the 22O nucleus. We also measured the α inelastic scattering on 23F, the neutron knockout from 24F, and the two-nucleon knockout from 25Ne using a cocktail secondary beam. By comparison of the population strengths for excited states in these reactions, we deduced the character of the excited states. The levels and γ-decay scheme in 23F were proposed based on de-excitation γ-rays and the products of these reactions. We found that the 2268- and 4059-keV levels have strong proton single-particle nature of the s1/2 and d3/2 orbitals, respectively, by analysis of the population strengths and the angular distributions of the states. These single-particle states are located at higher excitation energies than the shell model predictions for the USD and SDPF-M interactions, which indicates that the centroid energy gaps for Ïd5/2-Ïs1/2 and Ïd5/2-Ïd3/2 are wider than predicted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 638, Issues 2â3, 6 July 2006, Pages 146-152
Journal: Physics Letters B - Volume 638, Issues 2â3, 6 July 2006, Pages 146-152
نویسندگان
S. Michimasa, S. Shimoura, H. Iwasaki, M. Tamaki, S. Ota, N. Aoi, H. Baba, N. Iwasa, S. Kanno, S. Kubono, K. Kurita, M. Kurokawa, T. Minemura, T. Motobayashi, M. Notani, H.J. Ong, A. Saito, H. Sakurai, A. Yoshida,