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Title: Structure and α-decay properties of the heaviest nuclei

Abstract

The α-decay is considered from the viewpoint of the many body features of internal nuclear motion and the theory of resonance reactions, as well. The α-half-lives are derived from clustering and scattering amplitudes given by self-consistent nuclear models for the nuclear shell structure and reaction dynamics. Calculations are performed for superheavy nuclei with Z=102–120 using the measured E{sub α} values, microscopic (shell model) or macroscopic (one body) cluster formation amplitudes and resonance scattering amplitudes. Theoretical results for α-half-lives are compared to data and empirical estimates. We prove that the Brown systematics (logT{sub α} (s) vs. Z{sub d}{sup 0.6}Q{sub α}{sup −1/2}, where Q{sub α} (MeV) is the effective decay energy, and Z{sub d} is the charge number of the daughter nucleus) of current decay data is very useful in the analysis and interpretation of data and prediction of new results. It is shown that by adding even–odd corrections to the calculated α-half-lives, the agreement with experimental data is improved and basic trends in the systematics of data are well reproduced. Spectroscopic information is derived from the ratio of theoretical to experimental results. The accuracy of available experimental half-lives is discussed.

Authors:
;
Publication Date:
OSTI Identifier:
22237240
Resource Type:
Journal Article
Journal Name:
Atomic Data and Nuclear Data Tables
Additional Journal Information:
Journal Volume: 98; Journal Issue: 6; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0092-640X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACCURACY; ALPHA DECAY; COMPARATIVE EVALUATIONS; CORRECTIONS; HALF-LIFE; HEAVY NUCLEI; MANY-BODY PROBLEM; MEV RANGE; SCATTERING AMPLITUDES; SHELL MODELS; TRANSACTINIDE ELEMENTS

Citation Formats

Silişteanu, I., E-mail: silist@theory.nipne.ro, and Budaca, A.I., E-mail: abudaca@theory.nipne.ro. Structure and α-decay properties of the heaviest nuclei. United States: N. p., 2012. Web. doi:10.1016/J.ADT.2011.12.007.
Silişteanu, I., E-mail: silist@theory.nipne.ro, & Budaca, A.I., E-mail: abudaca@theory.nipne.ro. Structure and α-decay properties of the heaviest nuclei. United States. doi:10.1016/J.ADT.2011.12.007.
Silişteanu, I., E-mail: silist@theory.nipne.ro, and Budaca, A.I., E-mail: abudaca@theory.nipne.ro. Thu . "Structure and α-decay properties of the heaviest nuclei". United States. doi:10.1016/J.ADT.2011.12.007.
@article{osti_22237240,
title = {Structure and α-decay properties of the heaviest nuclei},
author = {Silişteanu, I., E-mail: silist@theory.nipne.ro and Budaca, A.I., E-mail: abudaca@theory.nipne.ro},
abstractNote = {The α-decay is considered from the viewpoint of the many body features of internal nuclear motion and the theory of resonance reactions, as well. The α-half-lives are derived from clustering and scattering amplitudes given by self-consistent nuclear models for the nuclear shell structure and reaction dynamics. Calculations are performed for superheavy nuclei with Z=102–120 using the measured E{sub α} values, microscopic (shell model) or macroscopic (one body) cluster formation amplitudes and resonance scattering amplitudes. Theoretical results for α-half-lives are compared to data and empirical estimates. We prove that the Brown systematics (logT{sub α} (s) vs. Z{sub d}{sup 0.6}Q{sub α}{sup −1/2}, where Q{sub α} (MeV) is the effective decay energy, and Z{sub d} is the charge number of the daughter nucleus) of current decay data is very useful in the analysis and interpretation of data and prediction of new results. It is shown that by adding even–odd corrections to the calculated α-half-lives, the agreement with experimental data is improved and basic trends in the systematics of data are well reproduced. Spectroscopic information is derived from the ratio of theoretical to experimental results. The accuracy of available experimental half-lives is discussed.},
doi = {10.1016/J.ADT.2011.12.007},
journal = {Atomic Data and Nuclear Data Tables},
issn = {0092-640X},
number = 6,
volume = 98,
place = {United States},
year = {2012},
month = {11}
}