کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9861013 1528978 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes in νg9/2 shape polarisation across the odd neutron-rich Cr isotopes
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Changes in νg9/2 shape polarisation across the odd neutron-rich Cr isotopes
چکیده انگلیسی
Excited states in 57Cr have been populated to high spin in the C14(Ca48,αn) reaction at a beam energy of 130 MeV. A regular sequence of stretched quadrupole transitions has been established above the yrast 9/2+ level. This sequence is interpreted as a rotational band associated with prolate deformation induced by the excitation of the odd neutron into the 1/2+[440] orbital. Total Routhian surface calculations, which follow this configuration to high spin, reproduce the observed features of the band. They are also able to account for a similar, but less well developed structure in 55Cr. In contrast, the isomeric yrast 9/2+ state in 59Cr appears to be a band-head state dominated by the 9/2+[404] configuration, which is favoured at oblate deformations. Such a marked difference presents a significant challenge for theoretical descriptions, but is consistent with features exhibited by the low-lying negative-parity states in 59Cr.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 622, Issues 1–2, 25 August 2005, Pages 151-158
نویسندگان
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