About: Dipole response in Sn-132 within a self-consistent multiphonon approach

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1103/PhysRevC.90.014310
Description	A self-consistent calculation is performed within an equation of motion method to study the electric dipole response in the neutron rich Sn-132 with special attention at the low-energy excitations associated with the pygmy dipole resonance. A basis of one- plus two-phonon states is constructed by solving iteratively a set of equations of motion and adopted to bring the nuclear Hamiltonian to diagonal form. The phonons are generated in a Tamm-Dancoff approximation using a Hartree-Fock basis. The Hamiltonian is composed of an intrinsic kinetic term and an optimized two-body chiral potential. If complemented with a weak phenomenological density dependent term, such a potential improves substantially the description of the dipole response as compared to other realistic interactions. The two-phonon states play an important role in determining the fine structure of the giant dipole resonance and in enhancing the fragmentation of the strength at low energy, in fair agreement with the available data. Insights into the nature of the excitations building up the pygmy resonance are gained from the analysis of the phonon composition and shell structure of the states. A self-consistent calculation is performed within an equation of motion method to study the electric dipole response in the neutron rich Sn-132 with special attention at the low-energy excitations associated with the pygmy dipole resonance. A basis of one- plus two-phonon states is constructed by solving iteratively a set of equations of motion and adopted to bring the nuclear Hamiltonian to diagonal form. The phonons are generated in a Tamm-Dancoff approximation using a Hartree-Fock basis. The Hamiltonian is composed of an intrinsic kinetic term and an optimized two-body chiral potential. If complemented with a weak phenomenological density dependent term, such a potential improves substantially the description of the dipole response as compared to other realistic interactions. The two-phonon states play an important role in determining the fine structure of the giant dipole resonance and in enhancing the fragmentation of the strength at low energy, in fair agreement with the available data. Insights into the nature of the excitations building up the pygmy resonance are gained from the analysis of the phonon composition and shell structure of the states. (en)
Title	Dipole response in Sn-132 within a self-consistent multiphonon approach Dipole response in Sn-132 within a self-consistent multiphonon approach (en)
skos:prefLabel	Dipole response in Sn-132 within a self-consistent multiphonon approach Dipole response in Sn-132 within a self-consistent multiphonon approach (en)
skos:notation	RIV/00216208:11320/14:10283741!RIV15-MSM-11320___
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-07117S)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Knapp, František
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	11627
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/14:10283741
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	proton; pb-208; isotopes; states; resonance; neutron; n=82 nuclei (en)
http://linked.open.../riv/klicoveSlovo	isotopes neutron n=82 nuclei proton pb-208 resonance states
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[1B63C9C2F369]
http://linked.open...i/riv/nazevZdroje	Physical Review C - Nuclear Physics
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Statistical approaches to quantum many-body systems
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	90
http://linked.open...iv/tvurceVysledku	Knapp, František Veselý, P. Andreozzi, F. Lo Iudice, N. Porrino, A. De Gregorio, G.
http://linked.open...ain/vavai/riv/wos	000339094300001
issn	0556-2813
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevC.90.014310
http://localhost/t...ganizacniJednotka	11320

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