Multidimensionally constrained relativistic Hartree-Bogoliubov study of spontaneous nuclear fission

Znanstveni rad - Izvorni znanstveni rad

• Autor: Jie Zhao
• Autor: Bing-Nan Lu
• Autor: Tamara Nikšić
• Autor: Dario Vretenar
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

The inclusion of nonaxial quadrupole and octupole shape degrees of freedom is essential for a quantitative analysis of fission dynamics. The action integrals and, consequently, the half-lives crucially depend on the approximation used to calculate the effective collective inertia along the fission path. The perturbative cranking approach underestimates the effects of structural changes at the level crossings and the resulting collective inertia varies relatively smoothly in the (β20,β22) and (β20,β30) planes. In contrast, the nonperturbative collective mass is characterized by the occurrence of sharp peaks on the surface of collective coordinates, that can be related to single-particle level crossings near the Fermi surface. This enhances the effective inertia, increases the values of the action integral, and results in longer fission half-lives.

• Ključne riječi (engleski): fission; nuclear energy density functional
• 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 C - Nuclear Physics
• Brojčani podaci: vol. 92, br. 6, 064315
• p-ISSN: 0556-2813
• e-ISSN: 1089-490X
• DOI: https://doi.org/10.1103/PhysRevC.92.064315
• URN:NBN: urn:nbn:hr:217:664482
• Datum objave publikacije: 2015
• Projekt: Šifra: IP-2014-09-9159; Naziv (hrvatski): Struktura i dinamika egzotičnih femto-sustava; Kratica: STRUDEF; Voditelj: Nils Paar; Pravna nadležnost: Hrvatska; Financijer: HRZZ; Linija financiranja: IP
• URL dokumenta: https://journals.aps.org/prc/abstract/10.1103/PhysRevC.92.064315
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (2015) by the American Physical Society. Received 22 October 2015; published 18 December 2015.
• Datum i vrijeme pohrane: 2020-01-23 17:03:28