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Nuclear shape coexistence in Po isotopes: an interacting boson model study

JE García-Ramos and Kristiaan Heyde UGent (2015) PHYSICAL REVIEW C. 92(3).
abstract
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. Purpose: We intend to study the importance of configuration mixing in the understanding of the nuclear structure of even-even Po isotopes, where the shape coexistence phenomena are not clear enough. Method: We study in detail a long chain of polonium isotopes, Po190-208, using the interacting boson model with configuration mixing (IBM-CM). We fix the parameters of the Hamiltonians through a least-squares fit to the known energies and absolute B(E2) transition rates of states up to 3 MeV. Results: We obtained the IBM-CM Hamiltonians and we calculate excitation energies, B(E2)'s, electric quadrupole moments, nuclear radii and isotopic shifts, quadrupole shape invariants, wave functions, and deformations. Conclusions: We obtain a good agreement with the experimental data for all the studied observables and we conclude that shape coexistence phenomenon is hidden in Po isotopes, very much as in the case of the Pt isotopes.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
MEAN-FIELD DESCRIPTION, NEUTRON-DEFICIENT PB, EVEN-EVEN NUCLEI, GAMMA-RAY SPECTROSCOPY, ELECTRIC MONOPOLE TRANSITIONS, PARTICLE-HOLE EXCITATIONS, ALPHA-DECAY, DATA SHEETS, INTRUDER STATES, SHELL-MODEL
journal title
PHYSICAL REVIEW C
Phys. Rev. C
volume
92
issue
3
article number
034309
pages
19 pages
Web of Science type
Article
Web of Science id
000361037700001
ISSN
0556-2813
DOI
10.1103/PhysRevC.92.034309
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
6997957
handle
http://hdl.handle.net/1854/LU-6997957
date created
2015-12-01 12:04:28
date last changed
2016-12-21 15:41:48
@article{6997957,
  abstract     = {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. 
Purpose: We intend to study the importance of configuration mixing in the understanding of the nuclear structure of even-even Po isotopes, where the shape coexistence phenomena are not clear enough. 
Method: We study in detail a long chain of polonium isotopes, Po190-208, using the interacting boson model with configuration mixing (IBM-CM). We fix the parameters of the Hamiltonians through a least-squares fit to the known energies and absolute B(E2) transition rates of states up to 3 MeV. 
Results: We obtained the IBM-CM Hamiltonians and we calculate excitation energies, B(E2)'s, electric quadrupole moments, nuclear radii and isotopic shifts, quadrupole shape invariants, wave functions, and deformations. 
Conclusions: We obtain a good agreement with the experimental data for all the studied observables and we conclude that shape coexistence phenomenon is hidden in Po isotopes, very much as in the case of the Pt isotopes.},
  articleno    = {034309},
  author       = {Garc{\'i}a-Ramos, JE and Heyde, Kristiaan},
  issn         = {0556-2813},
  journal      = {PHYSICAL REVIEW C},
  keyword      = {MEAN-FIELD DESCRIPTION,NEUTRON-DEFICIENT PB,EVEN-EVEN NUCLEI,GAMMA-RAY SPECTROSCOPY,ELECTRIC MONOPOLE TRANSITIONS,PARTICLE-HOLE EXCITATIONS,ALPHA-DECAY,DATA SHEETS,INTRUDER STATES,SHELL-MODEL},
  language     = {eng},
  number       = {3},
  pages        = {19},
  title        = {Nuclear shape coexistence in Po isotopes: an interacting boson model study},
  url          = {http://dx.doi.org/10.1103/PhysRevC.92.034309},
  volume       = {92},
  year         = {2015},
}

Chicago
García-Ramos, JE, and Kristiaan Heyde. 2015. “Nuclear Shape Coexistence in Po Isotopes: An Interacting Boson Model Study.” Physical Review C 92 (3).
APA
García-Ramos, J., & Heyde, K. (2015). Nuclear shape coexistence in Po isotopes: an interacting boson model study. PHYSICAL REVIEW C, 92(3).
Vancouver
1.
García-Ramos J, Heyde K. Nuclear shape coexistence in Po isotopes: an interacting boson model study. PHYSICAL REVIEW C. 2015;92(3).
MLA
García-Ramos, JE, and Kristiaan Heyde. “Nuclear Shape Coexistence in Po Isotopes: An Interacting Boson Model Study.” PHYSICAL REVIEW C 92.3 (2015): n. pag. Print.