Proton Electric Pygmy Dipole Resonance

Znanstveni rad - Izvorni znanstveni rad

• Autor: Nils Paar
• Autor: Dario Vretenar
• Autor: Peter Ring
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

The evolution of the low-lying E1 strength in proton-rich nuclei is analyzed in the framework of the self-consistent relativistic Hartree-Bogoliubov model and the relativistic quasiparticle random-phase approximation (RQRPA). Model calculations are performed for a series of N=20 isotones and Z=18 isotopes. For nuclei close to the proton drip line, the occurrence of pronounced dipole peaks is predicted in the low-energy region below 10 MeV excitation energy. From the analysis of the proton and neutron transition densities and the structure of the RQRPA amplitudes, it is shown that these states correspond to the proton pygmy dipole resonance.

• Ključne riječi (engleski): nuclear mass and neutron distributions; forces in hadronic systems and nuclear effective interactions; Hartree-Fock and random-phase approximations in nuclei; nuclear giant resonances
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review Letters
• Brojčani podaci: vol. 94, br. 18, 182501
• p-ISSN: 0031-9007
• e-ISSN: 1079-7114
• DOI: https://doi.org/10.1103/PhysRevLett.94.182501
• URN:NBN: urn:nbn:hr:217:409794
• Datum objave publikacije: 2005
• URL dokumenta: http://link.aps.org/doi/10.1103/PhysRevLett.94.182501
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (2005) by the American Physical Society.
• Datum i vrijeme pohrane: 2019-10-15 13:21:40