Zobrazeno 1 - 10
of 201
pro vyhledávání: '"Stoyanov, Ch."'
Publikováno v:
Phys. Rev. C 101, 025805 (2020)
We have calculated electron capture rates for neutron-rich $N=50$ nuclei ($^{78}$Ni, $^{82}$Ge, $^{86}$Kr, $^{88}$Sr) within the Thermal QRPA approach at temperatures $T=0$, corresponding to capture on the ground-state, and at $T=10$ GK (0.86 MeV), w
Externí odkaz:
http://arxiv.org/abs/1910.03335
Publikováno v:
Phys. Rev. C 100, 025801 (2019)
A microscopic thermodynamically consistent approach is applied to compute electron capture (EC) rates and cross sections on nuclei in hot stellar environments. The cross section calculations are based on the Donnelly-Walecka multipole expansion metho
Externí odkaz:
http://arxiv.org/abs/1903.08418
We combine the thermal QRPA approach with the Skyrme energy density functional theory (Skyrme-TQRPA) for modelling the process of electron capture on nuclei in supernova environment. For a sample nucleus, $^{56}$Fe, the Skyrme-TQRPA approach is appli
Externí odkaz:
http://arxiv.org/abs/1602.07875
Publikováno v:
Phys. Rev. C 94, 015805 (2016)
The Thermal Quasiparticle Random-Phase Approximation is combined with the Skyrme energy density functional method (Skyrme-TQRPA) to study the response of a hot nucleus to an external perturbation. For the sample nuclei, $^{56}$Fe and $^{82}$Ge, the S
Externí odkaz:
http://arxiv.org/abs/1602.07869
Autor:
Iudice, N. Lo, Stoyanov, Ch.
Publikováno v:
Phys.Rev. C69 (2004) 044312
We studied in a microscopic multiphonon approach the proton-neutron symmetry and phonon structure of some low-lying states recently discovered in 92Zr. We confirm the breaking of F-spin symmetry, but argue that the breaking mechanism is more complex
Externí odkaz:
http://arxiv.org/abs/nucl-th/0403058
Publikováno v:
Nucl.Phys. A731 (2004) 273-280
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- P
Externí odkaz:
http://arxiv.org/abs/nucl-th/0307081
Publikováno v:
Phys.Lett.B586:213-218,2004
Dipole excitations below the neutron threshold in neutron rich Sn isotopes are studied theoretically in the Quasiparticle-Phonon Model with HFB single particle input. Of special interest are the low-lying two-phonon 1- states and the Pygmy Dipole Res
Externí odkaz:
http://arxiv.org/abs/nucl-th/0307020
Publikováno v:
Nucl.Phys. A722 (2003) 123-128
A finite rank separable approximation for the quasiparticle RPA calculations with Skyrme interactions that was proposed in our previous work is extended to take into account the coupling between one- and two-phonon terms in the wave functions of exci
Externí odkaz:
http://arxiv.org/abs/nucl-th/0301064
A finite rank separable approximation for the quasiparticle RPA with Skyrme interactions is applied to study the low lying quadrupole and octupole states in some S isotopes and giant resonances in some spherical nuclei. It is shown that characteristi
Externí odkaz:
http://arxiv.org/abs/nucl-th/0212104
Publikováno v:
Phys.Rev. C66 (2002) 034304
A finite rank separable approximation for the particle-hole RPA calculations with Skyrme interactions is extended to take into account the pairing. As an illustration of the method energies and transition probabilities for the quadrupole and octupole
Externí odkaz:
http://arxiv.org/abs/nucl-th/0206059