Pygmy resonances and nucleosynthesis
نویسندگان
چکیده
منابع مشابه
Pygmy and Giant Dipole Resonances in Sn
We report on first results from dipole-strength measurements in the region of unstable nuclei around Sn; experimental details were presented earlier [1]. In brief, such studies are motivated by theoretical predictions of multipole distributions in exotic nuclei differing much from that observed in stable nuclei; aditional strength near the neutron separation threshold, moreover, may have conseq...
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Reactions with radioactive beams have attracted great experimental and theoretical interest during the last two decades [ 1]. Progresses of this scientific endeavor were reported on measurements of nuclear sizes [ 2], use of secondary radioactive beams to elucidate reactions of astrophysical interest [ 3, 4], fusion reactions with neutron-rich nuclei [ 5, 6], tests of fundamental interactions [...
متن کاملPygmy dipole resonances in relativistic random phase approximation
The isovector dipole response in Pb is described in the framework of a fully self-consistent relativistic random phase approximation. The NL3 parameter set for the effective mean-field Lagrangian with nonlinear meson self-interaction terms, used in the present calculations, reproduces ground state properties as well as the excitation energies of giant resonances in nuclei. In addition to the is...
متن کاملRelativistic RPA plus phonon-coupling analysis of pygmy dipole resonances
The relativistic random-phase approximation (RRPA) plus phonon-coupling (PC) model is applied in the analysis of E1 strength distributions in 208Pb and 132Sn, for which data on pygmy dipole resonances (PDR) have recently been reported. The covariant response theory is fully consistent: the effective nuclear interaction NL3 is used both to determine the spectrum of single-nucleon Dirac states, a...
متن کاملPygmy Dipol Resonances as a Manifestation of the Structure of the Neutron-Rich Nuclei
Dipole excitations in neutron-rich nuclei below the neutron threshold are investigated. The method is based on Hartree-Fock-Bogoliubov (HFB) and Quasiparticle-Phonon Model (QPM) theory. Of our special interest are the properties of the low-lying 1 Pygmy Resonance and the two-phonon quadrupole-octupole 1 states in Sn-isotopes including exploratory investigations for the experimentally unknown ma...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2015
ISSN: 2100-014X
DOI: 10.1051/epjconf/20159301021