کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10723024 | 1033826 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low-lying resonances in the 16B nucleus
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Low-lying resonances in the 16B nucleus Low-lying resonances in the 16B nucleus](/preview/png/10723024.png)
چکیده انگلیسی
We investigate the 16B spectrum within a microscopic 15B + n model, involving several channels. The wave functions are defined in the Generator Coordinate Method, associated with the microscopic R-matrix formalism. We suggest that the narrow peak observed in recent experiments above the 15B + n threshold can be assigned to a 0â resonance which decays by d-wave neutron emission. The GCM calculation shows that this state cannot be reproduced in a single-channel B15(3/2â)+n model, and that excited configurations are necessary. Other 1â and 2âs-wave resonances are found at low excitation energies. In particular, we find a 1â state which represents a possible candidate for the 16B ground state. In general, our results show the importance of a multichannel framework. Comparisons with shell-model calculations are briefly discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 696, Issue 3, 31 January 2011, Pages 237-240
Journal: Physics Letters B - Volume 696, Issue 3, 31 January 2011, Pages 237-240
نویسندگان
M. Dufour, P. Descouvemont,