scholarly journals The impact of the tensor interaction on the β-delayed neutron emission of the neutron-rich Ni isotopes

2018 ◽  
Vol 177 ◽  
pp. 09010
Author(s):  
E.O. Sushenok ◽  
A.P. Severyukhin ◽  
N.N. Arsenyev ◽  
I.N. Borzov
Keyword(s):  
Random Phase Approximation ◽  
Neutron Emission ◽  
Random Phase ◽  
Tensor Interaction ◽  
Wave Functions ◽  
Delayed Neutron ◽  
Skyrme Interaction ◽  
Β Decay ◽  
Quasiparticle Random Phase Approximation ◽  
The Impact

The neutron emission of the β-decay of 74;76;78;80Ni are studied within the quasiparticle random phase approximation with the Skyrme interaction. The coupling between one- and two-phonon terms in the wave functions of the low-energy 1+ states of the daughter nuclei is taken into account. It is shown that the strength decrease of the neutronproton tensor interaction leads to the increase of the half-life and the neutron-emission probability.

scholarly journals The competition of tensor interaction and neutron-proton pairing in the beta-decay of the neutron-rich isotopes

2019 ◽  
Vol 201 ◽  
pp. 09011
Author(s):  
E. O. Sushenok ◽  
A. P. Severyukhin ◽  
N. N. Arsenyev ◽  
I. N. Borzov
Keyword(s):  
Random Phase Approximation ◽  
Neutron Emission ◽  
Random Phase ◽  
Tensor Interaction ◽  
Wave Functions ◽  
Skyrme Interaction ◽  
Quasiparticle Random Phase Approximation ◽  
Cd Isotopes ◽  
Neutron Rich Isotopes ◽  
Proton Pairing

The effects of the residual interaction in the particle-particle channel on β-decay characteristics and the multi-neutron emission probabilities in the β-decay of 126,128,130,132Cd are studied within the quasiparticle random phase approximation with the Skyrme interaction. The coupling between one-and two-phonon terms in the wave functions of the low-energy 1+ states of the daughter nuclei is taken into account. It is shown that the inclusion of the spin-isospin interaction in the particle-particle channel leads to the reduction of half-lives and redistribution of one-and two-neutron emission probabilities. The competition of tensor interaction and neutron-proton pairing in the β-decay characteristics of the neutron-rich Cd isotopes is discussed.

TENSOR EFFECTS IN PYGMY DIPOLE EXCITATION

2011 ◽  
Vol 20 (10) ◽  
pp. 2143-2151 ◽  
Author(s):  
ESRA YUKSEL ◽  
KUTSAL BOZKURT
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Nucleon Nucleon ◽  
Coupling Constants ◽  
Phase Approximation ◽  
Skyrme Interaction ◽  
Quasiparticle Random Phase Approximation ◽  
Tensor Coupling ◽  
Hartree Fock ◽  
Dipole Excitation

We investigate tensor effects in pygmy dipole excitations for the case of neutron-rich nuclei 68 Ni and 124 Sn using effective nucleon–nucleon Skyrme interaction. We use the Hartree–Fock–Bogoliubov (HFB) theory and employ the quasiparticle random phase approximation (QRPA). We calculate and compare the PDR and also GDR strength in the PDR–GDR energy region for QRPA calculations with and without tensor correlations. The most obvious results for the dipole excitations calculations are strongly dependent on the tensor terms. We see that the tensor correlations are more active at around 14–20 MeV , especially for the neutron-rich nuclei 68 Ni . We also compare the PDR calculations with their experimental results for the different proton–neutron tensor coupling constants.

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