Zobrazeno 1 - 10
of 236
pro vyhledávání: '"Delion, D"'
Autor:
Delion, D. S., Ghinescu, S.
Neutron physics is one of the oldest brach of the experimental nuclear physics, but the investigation of the spontaneous neutron emission from the ground state along the neutron dripline is still at its beginning, in spite of the crucial importance f
Externí odkaz:
http://arxiv.org/abs/2311.08180
Autor:
Dumitrescu, A., Delion, D. S.
We show that the Hartree-Fock-Bogoliubov (HFB) method is able to describe experimental values of alpha decay widths by including a residual nucleon-nucleon Surface Gaussian Interaction (SGI) within the standard procedure used to calculate the nuclear
Externí odkaz:
http://arxiv.org/abs/2211.09452
Autor:
Ghinescu, S. A., Delion, D. S.
We propose a semi-microscopic model for the simultaneous emission of two protons. This model has the advantage of avoiding certain technical aspects of a fully microscopic 3-body framework, while also allowing the investigation of the influence of pr
Externí odkaz:
http://arxiv.org/abs/2207.01475
Autor:
Delion, D. S., Ghinescu, S. A.
The simultaneous emission of two protons is an exotic and complex three-body process. It is very important for experimental groups investigating the nuclear stability on the proton drip line to have a simple rule predicting the two-proton decay width
Externí odkaz:
http://arxiv.org/abs/2201.05814
Autor:
Ghinescu, S. A., Delion, D. S.
We compare the coupled channels procedure to the semiclassical approach to describe two-body emission processes, in particular $\alpha$-decay, from deformed nuclei within the propagator method. We express the scattering amplitudes in terms of a propa
Externí odkaz:
http://arxiv.org/abs/2102.08161
Publikováno v:
Phys. Rev. C 102, 061301 (2020)
The formal implications of a quartet coherent state ansatz for proton-neutron pairing are analyzed. Its nonlinear annihilation operators, which generalize the BCS linear quasiparticle operators, are computed in the quartetting case. Their structure i
Externí odkaz:
http://arxiv.org/abs/2009.00932
The status of different extensions of the Random Phase Approximation (RPA) is reviewed. The general framework is given within the Equation of Motion Method and the equivalent Green's function approach for the so-called Self-Consistent RPA (SCRPA). Th
Externí odkaz:
http://arxiv.org/abs/2009.00591
Autor:
Baran, V. V., Delion, D. S.
Publikováno v:
Physics Letters B 805, 135462 (2020)
We introduce a BCS-like theory for the quartet correlations induced by the isovector pairing interaction. It is based on a coherent state of BCS type and, unlike usual mean field approaches, it displays a vanishing pair anomalous density $\langle c^\
Externí odkaz:
http://arxiv.org/abs/1909.10192
Autor:
Baran, V. V., Delion, D. S.
Publikováno v:
Phys. Rev. C 100, 034326 (2019)
We study the nontrivial interplay of the well known \emph{pairing} and the more complex \emph{quarteting} correlations in the particular case of $N>Z$ atomic nuclei. Within the new Analytical Disentangled Condensate model, by implementing the notion
Externí odkaz:
http://arxiv.org/abs/1905.06639
Autor:
Baran, V. V., Delion, D. S.
Publikováno v:
Phys. Rev. C 99, 064311 (2019)
We study the description of single-species and isovector pairing correlations in the framework of the projected-BCS (PBCS) and the Quartet Condensation Model (QCM) from a particle-hole perspective and we introduce the representation of the QCM quarte
Externí odkaz:
http://arxiv.org/abs/1902.00065