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We investigate the Gamow-Teller (GT) transition strength distributions in the light carbon isotopes $^{12,14,16}$C within the framework of the deformed quasiparticle random-phase approximation (DQRPA). Nuclear deformation is explicitly…

Nuclear Theory · Physics 2026-03-13 Eunja Ha , Myung-Ki Cheoun , H. Sagawa , Gianluca Colò

Gamow-Teller strength distributions and beta-decay half-lives in neutron-deficient Kr and Sr isotopes are investigated within a deformed quasiparticle random phase approximation. The approach is based on a selfconsistent Skyrme Hartree-Fock…

Nuclear Theory · Physics 2009-12-31 P. Sarriguren

Low-frequency quadrupole vibrations in deformed ${}^{36,38,40}$Mg are studied by means of the deformed Quasiparticle-RPA based on the coordinate-space Hartree-Fock-Bogoliubov formalism. Strongly collective $K^{\pi}=0^{+}$ and $2^{+}$…

Nuclear Theory · Physics 2007-05-23 Kenichi Yoshida , Masayuki Yamagami , Kenichi Matsuyanagi

In the past decades, the \gamma-decay of giant resonances has been studied using phenomenological models. In keeping with possible future studies performed with exotic beams, microscopically-based frameworks should be envisaged. In the…

Nuclear Theory · Physics 2015-06-03 Marco Brenna , Gianluca Colò , Pier Francesco Bortignon

A large Hilbert space is used for the calculation of the nuclear matrix elements governing the light neutrino mass mediated mode of neutrinoless double beta decay of Ge76, Mo100, Cd116, Te128 and Xe136 within the proton-neutron…

Nuclear Theory · Physics 2009-10-30 F. Simkovic , J. Schwieger , G. Pantis , Amand Faessler

A computer code for quasiparticle random phase approximation-QRPA and projected quasiparticle random phase approximation-PQRPA models of nuclear structure is explained in details. An important application of the code consists in evaluating…

Nuclear Theory · Physics 2010-04-22 F. Krmpotic , A. R. Samana , C. A. Bertulani

The effect of the inclusion of ground state correlations into the QRPA equation of motion for the two-neutrino double beta ($\beta\beta_{2\nu}$) decay is carefully analyzed. The resulting model, called renormalized QRPA (RQRPA), does not…

Nuclear Theory · Physics 2009-02-18 F. Krmpotic , T. T. S. Kuo , A. Mariano , E. J. V. de Passos , A. F. R. de Toledo Piza

A new consistent analysis of the renormalized proton--neutron quasiparticle random phase approximation based on the simultaneous recalculation of the one--body density matrix and the pairing tensor has been used to study the double beta…

Nuclear Theory · Physics 2009-10-31 A. Bobyk , Wieslaw A. Kaminski , P. Zareba

Weak decay rates under stellar density and temperature conditions holding at the rapid proton capture process are studied in neutron-deficient medium-mass waiting point nuclei extending from Ni up to Sn. Neighboring isotopes to these…

Nuclear Theory · Physics 2011-02-21 P. Sarriguren

The contribution of quantum shape fluctuations to inertial properties of rotating nuclei has been analyzed for QQ-nuclear interaction using the random phase approximation (RPA). The different recipes to treat the cranking mean field plus…

Nuclear Theory · Physics 2016-08-16 D. Almehed , F. Dönau , R. G. Nazmitdinov

The isovector dipole E1 strength in Mo isotopes with A=92,94,96,98,100 is analyzed within the self-consistent separable random-phase approximation (SRPA) model with Skyrme forces SkT6, SkM*, SLy6, and SkI3. The special attention is paid to…

Nuclear Theory · Physics 2009-05-29 J. Kvasil , P. Vesely , V. O. Nesterenko , W. Kleinig , P. -G. Reinhard , S. Frauendorf

We have performed self-consistent Skyrme Hartree-Fock-Bogolyubov calculations for nuclei close to $^{254}$No. Self-consistent deformations, including $\beta_{2,4,6,8}$ as functions of the rotational frequency, were determined for even-even…

Nuclear Theory · Physics 2017-08-23 Yue Shi , J. Dobaczewski , P. T. Greenlees , J. Toivanen , P. Toivanen

"Why is the EoS for tin so soft?" is a longstanding question, which prevents us from determining the nuclear incompressibility $K_\infty$ accurately. To solve this puzzle, a fully self-consistent quasiparticle random phase approximation…

Nuclear Theory · Physics 2022-11-03 Z. Z. Li , Y. F. Niu , G. Colò

A microscopic description of fission dynamics is important to understand the decay properties of neutron-rich heavy nuclei that are relevant to $r$-process nucleosynthesis. To provide a reliable and efficient method to evaluate the…

Nuclear Theory · Physics 2024-06-17 Kouhei Washiyama

We use a deformed QRPA formalism to describe simultaneously the energy distributions of the single beta Gamow-Teller strength and the two-neutrino double beta decay matrix elements. Calculations are performed in a series of double beta…

The low-lying dipole and quadrupole states in neutron rich nuclei, are studied within the fully self-consistent relativistic quasiparticle random-phase approximation (RQRPA), formulated in the canonical basis of the Relativistic…

Nuclear Theory · Physics 2009-11-10 N. Paar , T. Niksic , D. Vretenar , P. Ring

We present results of calculations based on the Skyrme energy density functional including the arbitrary mixing between protons and neutrons. In this framework, single-particle states are superpositions of proton and neutron components and…

Nuclear Theory · Physics 2015-06-16 Koichi Sato , Jacek Dobaczewski , Takashi Nakatsukasa , Wojciech Satuła

The neutron and proton scattering with either deuteron or stable alpha particle can be modeled as a two particle system. In this paper, using Morse function as reference potential, inverse potentials have been computationally constructed…

Nuclear Theory · Physics 2022-09-27 Lalit Kumar , Shikha Awasthi , Anil Khachi , O. S. K. S Sastri

The multipole modes of excitation for tetrahedrally deformed neutron-rich Zr isotopes are investigated using the quasiparticle finite amplitude method based on the covariant density functional theories. By employing the density-dependent…

Nuclear Theory · Physics 2024-06-25 Jie Zhao

We introduce a microscopic approach to derive all the inertial functions in the five-dimensional quadrupole collective Hamiltonian. Local normal modes are evaluated on the constrained mean field in the quasiparticle random-phase…

Nuclear Theory · Physics 2015-05-27 Nobuo Hinohara , Koichi Sato , Kenichi Yoshida , Takashi Nakatsukasa , Masayuki Matsuo
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