Microscopic description of 2α-decay in 212Po and 224Ra isotopes

Scientific paper - Original scientific paper

• Author: F. Mercier
• Author: J. Zhao
• Author: J.-P. Ebran
• Author: E. Khan
• Author: Tamara Nikšić
• Author: Dario Vretenar
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

Half-lives calculations for α decay of 212Po and 224Ra are performed using microscopic self-consistent framework. Calculations are performed using the covariant energy density functional theory within Hartree-Bogoliubov approximation, where a separable pairing interaction of finite range is used. The potential energy surface is computed as a function of quadrupole, octupole and hexadecupole collective coordinates and the determination of the dynamical least-action path is performed using the cranking adiabatic time-dependent Hartree Bogoliubov approximation. The predicted half-lives for α decay of 212Po and 224Ra are in good agreement with experimental values. In addition, a new decay mode consisting of symmetric, back to back, 2α emission is predicted with half-lives of the order of those observed for cluster emission.

• Keywords (english): covariant energy density functional theory; isotopes
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Il Nuovo Cimento C - Colloquia on Physics
• Numbering: vol. 45, 59
• p-ISSN: 2037-4909
• e-ISSN: 1826-9885
• DOI: https://doi.org/10.1393/ncc/i2022-22059-x
• URN:NBN: urn:nbn:hr:217:532854
• Publication: 2022
• Project: Number: KK.01.1.1.01.0004; Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri; Title (english): Implementation of top research within the Scientific Center of Excellence for Quantum and Complex Systems, and Representations of Lie Algebras; Acronym: QuantiXLie; Leader: Hrvoje Buljan; Jurisdiction: eu; Funding stream: European Regional Development Fund
• Project: Number: IP-2018-01-5987; Title (croatian): Kvantificiranje neodređenosti u formalizmu nuklearnih energijskih funkcionala gustoće; Title (english): Uncertainty Quantification within the nuclear energy density functional framework; Acronym: NucEDF; Leader: Tamara Nikšić; Jurisdiction: Croatia; Funding stream: Research Projects
• Document URL: https://www.sif.it/riviste/sif/ncc/econtents/2022/045/03/article/17
• Type of resource: Text
• Access conditions: Open access
• Public note: Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0). Received 12 May 2022. Published online 6 June 2022.
• Created on: 2024-08-31 21:38:28