Gamow-Teller strengths of some sd-shell nuclei in the shell model framework
نویسندگان
چکیده
منابع مشابه
Gamow-Teller strength distributions in fp-shell nuclei
P. B. Radha,* D. J. Dean, S. E. Koonin, K. Langanke, and P. Vogel W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125 Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37381 Institut for Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark Division of Physics, Mathematics and Astronomy, Californi...
متن کاملGamow-Teller strengths and electron-capture rates for p f -shell nuclei of relevance for late stellar evolution
Background: Electron-capture reaction rates on medium-heavy nuclei are an important ingredient for modeling the late evolution of stars that become core-collapse or thermonuclear supernovae. The estimation of these rates requires the knowledge of Gamow-Teller strength distributions in the β+ direction. Astrophysical models rely on electron-capture rate tables largely based on theoretical models...
متن کاملGamow shell model description of neutron-rich nuclei.
This work presents the first continuum shell-model study of weakly bound neutron-rich nuclei involving multiconfiguration mixing. For the single-particle basis, the complex-energy Berggren ensemble representing the bound single-particle states, narrow resonances, and the nonresonant continuum background is taken. Our shell-model Hamiltonian consists of a one-body finite potential and a zero-ran...
متن کاملCentroids of Gamow-Teller transitions at finite temperature in fp-shell neutron-rich nuclei
The temperature dependence of the energy centroids and strength distributions for Gamow-Teller (GT) 1+ excitations in several fp-shell nuclei is studied. The quasiparticle random phase approximations (QRPA) is extended to describe GT states at finite temperature. A shift to lower energies of the GT+ strength is found, as compared to values obtained at zero temperature. Typeset using REVTEX ∗Ema...
متن کاملQuadrupole moments of sd-shell nuclei.
Shell-model calculations are presented for electric quadrupole moments of A =17—39 nuclei. The shell-model wave functions, which span the complete Ods/2-1sl/2 Dd3/2 model space in all instances, are obtained by diagonalizing an sd-shell Hamiltonian which consists of a fixed singleparticle energy spectrum and a single set of two-body matrix elements scaled as a function of the mass number A. Res...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Revista Mexicana de Física
سال: 2020
ISSN: 2683-2224,0035-001X
DOI: 10.31349/revmexfis.66.330