prikaz prve stranice dokumenta Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances
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Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances
Physics Letters B, 647 (2007), 2-3; 111-117. https://doi.org/10.1016/j.physletb.2007.01.056
Litvinova, E.; Ring, Peter; Vretenar, Dario

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Litvinova, E., Ring, P. i Vretenar, D. (2007). Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances. Physics Letters B, 647. (2-3), 111-117. doi: 10.1016/j.physletb.2007.01.056

Litvinova, E., et al. "Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances." Physics Letters B, vol. 647, br. 2-3, 2007, str. 111-117. https://doi.org/10.1016/j.physletb.2007.01.056

Litvinova, E., Peter Ring i Dario Vretenar. "Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances." Physics Letters B 647, br. 2-3 (2007): 111-117. https://doi.org/10.1016/j.physletb.2007.01.056

Litvinova, E., Ring, P. i Vretenar, D. (2007) 'Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances', Physics Letters B, 647(2-3), str. 111-117. doi: 10.1016/j.physletb.2007.01.056

Litvinova E, Ring P, Vretenar D. Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances. Physics Letters B [Internet]. 2007. [pristupljeno 04.12.2024.];647(2-3):111-117. doi: 10.1016/j.physletb.2007.01.056

E. Litvinova, P. Ring i D. Vretenar, "Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances", Physics Letters B, vol. 647, br. 2-3, str. 111-117, 2007. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:145549. [Citirano: 04.12.2024.]

Za citiranje koristite ovu mrežnu adresu: https://urn.nsk.hr/urn:nbn:hr:217:145549
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Podaci o radu
Naslov (engleski)Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances
AutorE. Litvinova
AutorPeter Ring
AutorDario Vretenar
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Sažetak (engleski)
The relativistic random-phase approximation (RRPA) plus phonon-coupling (PC) model is applied in the analysis of E1 strength distributions in 208Pb and 132Sn, for which data on pygmy dipole resonances (PDR) have recently been reported. The covariant response theory is fully consistent: the effective nuclear interaction NL3 is used both to calculate the spectrum of single-nucleon Dirac states, and as the residual interaction which determines the collective phonon states in the relativistic RPA. It is shown that the picture of the PDR as a resonant oscillation of the neutron skin against the isospin saturated proton–neutron core, and with the corresponding RRPA state characterized by a coherent superposition of many neutron particle–hole configurations, remains essentially unchanged when particle–vibration coupling is included. The effect of two-phonon admixtures is a weak fragmentation and a small shift of PDR states to lower excitation energy. Even though the PDR calculated in the extended model space of ph⊗phonon configurations contains sizeable two-phonon admixtures, it basically retains a one-phonon character and its dynamics is not modified by the coupling to low-lying surface vibrations.
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaPhysics Letters B
Brojčani podacivol. 647, br. 2-3, str. 111-117
p-ISSN0370-2693
DOIhttps://doi.org/10.1016/j.physletb.2007.01.056
URN:NBNurn:nbn:hr:217:145549
Datum objave publikacije2007
ProjektŠifra: 119-1191005-1010
Naziv (hrvatski): Nuklearna struktura i nuklearna astrofizika
Voditelj: Dario Vretenar
Pravna nadležnost: Hrvatska
Financijer: MZOS
Linija financiranja: ZP
URL dokumentahttp://dx.doi.org/10.1016/j.physletb.2007.01.056
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Imenovanje 3.0 (CC BY 3.0)
Javna napomenaReceived 25 July 2006, Revised 16 January 2007, Accepted 18 January 2007, Available online 16 February 2007. Published 5 April 2007. Under a Creative Commons license.
Datum i vrijeme pohrane2019-10-16 15:07:21