Thesis Collection
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Browsing by Author "Heyde, K."
Now showing items 1-19 of 19
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Concealed configuration mixing and shape coexistence in the platinum nuclei
García Ramos, José Enrique
; Hellemans, V.; Heyde, K. (American Institute of Physics, 2012)
The role of configuration mixing in the Pt region is investigated. The nature of the ground state changes smoothly, being spherical around mass A 174 and A 192 and deformed around the mid-shell N = 104 region. ... -
Disentangling the nuclear shape coexistence in even-even Hg isotopes using the interacting boson model
García Ramos, José Enrique; Heyde, K. (EDP Sciences, 2015)
We intend to provide a consistent description of the even-even Hg isotopes, 172−200Hg, using the interacting boson model including configuration mixing. We pay special attention to the description of the shape of the ... -
The influence of intruder states in even-even Po isotopes
García Ramos, José Enrique; Heyde, K. (2015-09-23)
We study the role of intruder states and shape coexistence in the even-even Po isotopes, through an interacting boson model with configuration mixing calculation. We analyzed the results in the light of known systematics ... -
Nuclear binding energies : global collective structure and local shell-model correlations
Fossion, R.; De Coster, C.; García Ramos, José Enrique; Werner, T.; Heyde, K. (Elsevier, 2008-01-28)
Nuclear binding energies and two-neutron separation energies are analysed starting from the liquid-drop model and the nuclear shell model in order to describe the global trends of the above observables. We subsequently ... -
Nuclear shape coexistence : a study of the even-even Hg isotopes using the interacting boson model with configuration mixing
García Ramos, José Enrique; Heyde, K. (American Institute of Physics, 2011)
Background: The Po, Pb, Hg, and Pt region is known for the presence of coexisting structures that correspond to different particle-hole configurations in the Shell Model language or equivalently to nuclear shapes with ... -
Nuclear shape coexistence in Po isotopes : an interacting boson model study
García Ramos, José Enrique; Heyde, K. (2015)
Background: The lead region, Po, Pb, Hg, and Pt, shows up the presence of coexisting structures having different deformation and corresponding to different particle-hole configurations in the Shell Model language. ... -
On shape coexistence and quantum phase transitions: Lead and Zirconium regions
García Ramos, José Enrique; Heyde, K. (2018)
On shape coexistence and quantum phase transitions: Lead and Zirconium regions -
On shape coexistence in zirconium region
García Ramos, José Enrique; Heyde, K. (2019)
On shape coexistence in zirconium region -
On the nature of the shape coexistence and the quantum phase transition phenomena : lead region and Zr isotopes
García Ramos, José Enrique; Heyde, K. (EDP Sciences, 2018)
The goal of this contribution is to analyze the connection between shape coexistence and quantum phase transition, two seemingly unrelated phenomena that share common aspects, namely, the rapid change in the ground state ... -
On the nature of the shape coexistence phenomenon in the lead region
García Ramos, José Enrique; Heyde, K. (2017)
On the nature of the shape coexistence phenomenon in the lead region -
The platinum nuclei : concealed configuration mixing and shape coexistence
García Ramos, José Enrique; Hellemans, V.; Heyde, K. (American Physical Society, 2011-07-26)
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 A~174 and A~192 and deformed around the midshell ... -
The platinum nuclei : concealed configuration mixing and shape coexistence
García Ramos, José Enrique; Hellemans, V.; Heyde, K. (World Scientific, 2013)
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 A ∼ 174 and A ∼ 192 and deformed around the mid-shell ... -
The Pt isotopes : comparing the Interacting Boson Model with Configuration Mixing and the Extended Consistent-Q formalism
García Ramos, José Enrique; Heyde, K. (Elsevier, 2009-04-15)
The role of intruder configurations in the description of energy spectra and B(E2) values in the Pt region is analyzed. In particular, we study the differences between Interacting Boson Model calculations with or without ... -
Quest of shape coexistence in Zr isotopes
García Ramos, José Enrique; Heyde, K. (American Physical Society (postprint), 2019-10)
The mass region with A approx 100 and Z approx 40 is known to experience a sudden onset of deformation. The presence of the subshell closure Z=40 makes feasible to create particle-hole excitations at a moderate excitation ... -
Shape coexistence in the neutron-deficient even-even 182−188Hg isotopes studied via Coulomb excitation
Bree, N.; Wrzosek-Lipska, K.; Petts, A.; Andreyev, A.; Bastin, B.; Bender, M.; Blazhev, A.; Bruyneel, B.; Butler, P. A.; Butterworth, J.; Carpenter, M. P.; Cederkäll, J.; Clément, E.; Cocolios, T. E.; Deacon, A.; Diriken, J.; Ekström, A.; Fitzpatrick, C.; Fraile, L. M.; Fransen, Ch.; Freeman, S. J.; Gaffney, L. P.; García Ramos, José Enrique; Geibel, K.; Gernhäuser, R.; Grahn, T.; Guttormsen, M.; Hadinia, B.; Hadyńska-Klęk, K.; Hass, M; Heenen, P.-H.; Herzberg, R.-D.; Hess, H.; Heyde, K.; Huyse, M.; Ivanov, O.; Jenkins, D. G.; Julin, R.; Kesteloot, N.; Kröll, Th.; Krücken, R.; Larsen, A. C.; Lutter, R.; Marley, P.; Napiorkowski, P. J.; Orlandi, R.; Page, R. D.; Pakarinen, J.; Patronis, N.; Peura, P. J.; Piselli, E.; Rahkila, P.; Rapisarda, E.; Reiter, P.; Robinson, A. P.; Scheck, M.; Siem, S.; Singh Chakkal, K.; Smith, J. F.; Srebrny, J.; Stefanescu, I.; Tveten, G. M.; Van Duppen, P.; Van de Walle, J.; Voulot, D.; Warr, N.; Wenander, F.; Wiens, A.; Wood, J. L.; Zielińska, M. (American Physical Society, 2014)
Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV/nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 ... -
Shape evolution and shape coexistence in Pt isotopes: comparing interacting boson model configuration mixing and Gogny mean-field energy surfaces
García Ramos, José Enrique; Heyde, K.; Robledo, L. M.; Rodríguez Guzmán, R. (American Physical Society, 2014)
The evolution of the total energy surface and the nuclear shape in the isotopic chain 172-194Pt are studied in the framework of the interacting boson model, including configuration mixing. The results are compared with a ... -
The subtle connection between shape coexistence and quantum phase transition. The Zr case
García Ramos, José Enrique; Heyde, K. (Springer Verlag, 2020-11-11)
Background: Zr region is characterized by very rapid changes in the ground state structure of the nuclei. In particular, the onset of deformation when passing from 98Zr to 100Zr is one of the fastest ever observed in the ... -
A theoretical description of energy spectra and two-neutron separation energies for neutron-rich zirconium isotopes
García Ramos, José Enrique; Heyde, K.; Fossion, R.; Hellemans, V.; De Baerdemacker, S. (Springer, 2005-11)
Very recently the atomic masses of neutron-rich Zr isotopes, from 96Zr to 104Zr, have been measured with high precision. Using a schematic Interacting Boson Model (IBM) Hamiltonian, the evolution from spherical to deformed ...
