Kris Heyde

On quasiparticle interactions in the spherical N = 82 doubly even nuclei

Abstract Shell-model calculations for the doubly even single-closed-shell nuclei with N = 82 neutrons are performed by using a surface delta interaction (SDI) and a Gaussian force as the residual nucleon-nucleon interaction. The resemblance with the Tabakin force is discussed. The single-particle energies are determined by solving the inverse-gap equations (IGE). The shell-model Hamiltonian is diagonalized in a two-quasiparticle space after elimination of the spurious states. The RPA approach is discussed too. Also electric quadrupole and magnetic dipole transitions and static moments are calculated. The calculate spectroscopic factors are studied and compared with the experimental one-nucleon transfer data.

Platinum nuclei: Concealed configuration mixing and shape coexistence

The role of configuration mixing in the Pt region is investigated. For this chain of isotopes, the nature of the ground state changes smoothly, being spherical around mass

Collective and shell-model excitations in 9745Rh52

A~174

Probing pairing correlations in Sn isotopes using Richardson-Gaudin integrability

and

A shell-model description of intruder states and shape coexistence

A~192

From Nucleons to the Atomic Nucleus: A Short Story

and deformed around the midshell

On the nature of the shape coexistence and the quantum phase transition phenomena : lead region and Zr isotopes

N=104

The Platinum nuclei: Concealed configuration mixing and shape coexistence

region. This has a dramatic effect on the systematics of the energy spectra as compared to the systematics in the Pb and Hg nuclei. Interacting boson model with configuration mixing calculations are presented for gyromagnetic factors,

Concealed configuration mixing and shape coexistence in the platinum nuclei

ensuremath{alpha}

Probing the shapes of 186Pb

-decay hindrance factors, and isotope shifts. The necessity of incorporating intruder configurations to obtain an accurate description of the latter properties becomes evident.