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We calculate the proton and neutron spin contributions for nuclei using semi-empirical methods, as well as a novel hybrid \emph{ab initio}/semi-empirical method, for interpretation of experimental data. We demonstrate that core-polarisation…

High Energy Physics - Phenomenology · Physics 2015-03-10 Y. V. Stadnik , V. V. Flambaum

Based on the recent data in NUBASE2012, an improved empirical formula for evaluating the $\alpha$-decay half-lives is presented, in which the hindrance effect resulted from the change of the ground state spins and parities of parent and…

Nuclear Theory · Physics 2015-06-24 Z. Y. Wang , Z. M. Niu , Q. Liu , J. Y. Guo

Peripheral collisions with radioactive heavy-ion beams at relativistic energies are discussed as an innovative approach for probing the transient regime experienced by fissile systems evolving towards quasi-equilibrium. A dedicated…

Nuclear Experiment · Physics 2014-11-20 C. Schmitt , K. -H. Schmidt , A. Kelić , A. Heinz , B. Jurado , P. N. Nadtochy

The well-known spatial integration schemes in molecular electronic structure theory, immune to cusps and point singularities of some kind at atomic positions, use a set of weighting functions to split the integrand into a sum of…

Chemical Physics · Physics 2022-09-14 Dimitri N. Laikov

In this work, based on the framework of the Coulomb and proximity potential model (CPPM), we systematically study the cluster radioactivity half-lives of 26 trans-lead nuclei by considering the cluster preformation probability which is…

Nuclear Theory · Physics 2024-03-05 Xiao Liu , Jie-Dong Jiang , Xi-Jun Wu , Xiao-Hua Li

The prompt gamma-ray spectrum from depleted uranium (DU) spherical shells induced by 14 MeV D-T neutrons is measured. Monte Carlo (MC) simulation gives the largest prompt gamma flux with the optimal thickness of the DU spherical shells 3-5…

Instrumentation and Detectors · Physics 2016-08-03 Jianguo Qin , Caifeng Lai , Li Jiang , Rong Liu , Xinwei Zhang , Bangjiao Ye , Tonghua Zhu

Ground state properties of proton-rich odd-$Z$ nuclei in the region $55\le Z \le 73$ are studied in the relativistic mean field (RMF) theory. The RMF equations are solved by using the expansion method in the Harmonic-Oscillator basis. In…

Nuclear Theory · Physics 2009-11-10 L. S. Geng , H. Toki , J. Meng

F. Gygi recently suggested an analytic, norm-conserving, regularized nuclear potential to enable all-electron plane-wave calculations [J. Chem. Theory Comput. 2023, 19, 1300--1309]. This potential $V(r)$ is determined by inverting the…

Computational Physics · Physics 2023-09-19 Susi Lehtola

By employing the Coulomb proximity potential model (CPPM) in conjunction with 22 distinct proximity potential models, we investigated the temperature dependence and the effects of proton number and neutron number on the diffusion parameters…

Nuclear Theory · Physics 2025-04-03 Panpan Qi , Xuanpeng Xiao , Gongming Yu , Haitao Yang , Qiang Hu

The influence of nuclear deformation on proton-decay half-lives has been systematically studied in microscopic theoretical frameworks for a wide range of nuclei with Z<82. Correlation between 1p-decay half-lives and the deformed nuclear…

Nuclear Theory · Physics 2024-11-27 A. Jain , Pranali Parab , G. Saxena , Mamta Aggarwal

Some time ago the possibility of classical (without Gamow tunneling) universal description of radioactive nuclei decay was demonstrated. Such possibility is basis on the classical interpretation of Bohmian Psi-field reality in…

Nuclear Theory · Physics 2016-08-03 Strachimir Cht. Mavrodiev , M. A. Deliyergiyev

The oscillator parameter in nuclei is refitted to reproduce the available charge radius data. As an important improvement, we include the Coulomb term evaluated within the assumption of a uniformly charged sphere, and take into account the…

Nuclear Theory · Physics 2023-11-28 Latsamy Xayavong , Yeunhwan Lim

A semiclassical distorted wave (SCDW) model with Wigner transform of one-body density matrix is presented for multistep direct $(p,p^{\prime}x)$ reactions to the continuum. The model uses Wigner distribution functions obtained in methods…

Nuclear Theory · Physics 2007-05-23 M. K. Gaidarov , Y. Watanabe , K. Ogata , M. Kohno , M. Kawai , A. N. Antonov

A many-body Hamiltonian describing a system of Z protons and N neutrons moving in spherical shell model mean field and interacting among themselves through proton-proton and neutron-neutron pairing and a dipole-dipole proton-neutron…

Nuclear Theory · Physics 2009-02-18 C. M. Raduta , A. A. Raduta

Nuclear structure at short $NN$-distances is still poorly understood. In particular, the full quantum structure of the nucleus with a correlated $NN$-pair is a challenge to theory. So far, model descriptions have been limited to the average…

Nuclear Theory · Physics 2024-05-15 A. B. Larionov , Yu. N. Uzikov

This study evaluates the accuracy of nuclear fragmentation simulations using a quantum molecular dynamics (QMD) model based on relativistic mean field (RMF) theory for an energy range of 50-400 MeV/u, relevant to hadron therapy. A total of…

A very simple formula is presented that relates the logarithm of the half-life, corrected by the centrifugal barrier, with the Coulomb parameter in proton decay processes. The corresponding experimental data lie on two straight lines which…

Nuclear Theory · Physics 2009-11-11 D. S. Delion , R. J. Liotta , R. Wyss

A complete discrete set of spherical single-particle wave functions for studies of weakly-bound many-body systems is proposed. The new basis is obtained by means of a local-scale point transformation of the spherical harmonic oscillator…

Nuclear Theory · Physics 2008-11-26 M. V. Stoitsov , W. Nazarewicz , S. Pittel

We present results of coupled-channels calculations which are performed to understand the role of vibrational excitations of the daughter nucleus in proton emission decay of spherical nuclei. It is shown that the experimental decay rates…

Nuclear Theory · Physics 2008-11-26 K. Hagino