کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1835964 1527067 2017 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microscopic description of low-lying M1 excitations in odd-mass actinide nuclei
ترجمه فارسی عنوان
توضیحات میکروسکوپی تحریکات M1 کم ارتفاع در هسته آکتینید توده عجیب
کلمات کلیدی
اکتینید؛ توده عجیب؛ تحریک M1؛ حالت قیچی؛ انحرافات چرخشی؛ QPNM
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
چکیده انگلیسی

A restoration method of a broken symmetry which allows self-consistent determination of the separable effective restoration forces is now adapted to odd-mass nuclei in order to restore violated rotational invariance (RI-) of the Quasiparticle Phonon Nuclear Model (QPNM) Hamiltonian. Because of the self-consistency of the method, these effective forces contain no arbitrary parameters. Within RI-QPNM, the properties of the low-lying magnetic dipole excitations in odd-mass deformed 229–233Th and 233–239U nuclei have been investigated for the first time. It has been shown that computed fragmentation of the M1 strengths below 4 MeV in these nuclei is much stronger than that in neighboring doubly even 228–232Th and 232–238U nuclei. For 235U the summed M1 strength in the energy range 1.5–2.8 MeV is in agreement with the relevant experimental data where the missing strength was extracted by means of a fluctuation analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 957, January 2017, Pages 33–50
نویسندگان
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