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Title: Peninsulas of the neutron stability of nuclei in the vicinity of neutron magic numbers

Abstract

On the basis of the Hartree-Fock method as implemented with Skyrme forces (Ska, SkM*, Sly4, and SkI2) and with allowance for an axial deformation and nucleon pairing in the Bardeen-Cooper-Schrieffer approximation, the properties of extremely neutron-rich even-even nuclei were calculated beyond the neutron drip line known earlier from theoretical calculations. It was shown that the chains of isotopes beyond the neutron drip line that contain N = 32, 58, 82, 126, and 184 neutrons form peninsulas of nuclei stable against the emission of one neutron and, in some cases, peninsulas of nuclei stable against the emission of two neutrons. The neutron- and proton-density distributions in nuclei forming stability peninsulas were found to be spherically symmetric. A mechanism via which the stability of nuclei might be restored beyond the neutron drip line was discussed. A comparison with the results of calculations by the Hartree-Fock-Bogolyubov method was performed for long chains of sulfur and gadolinium isotopes up to the neutron drip line.

Authors:
 [1]; ;  [2]; ;  [3];  [4]
  1. St. Petersburg State University, Fock Institute of Physics (Russian Federation)
  2. Johann Wolfgang Goethe-Universitaet, Institut fuer Theoretische Physik (Germany)
  3. Kharkov Institute of Physics and Technology, National Science Center (Ukraine)
  4. Universitat de Barcelona (Spain)
Publication Date:
OSTI Identifier:
22043808
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 75; Journal Issue: 1; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BCS THEORY; BOGOLYUBOV METHOD; COMPARATIVE EVALUATIONS; EVEN-EVEN NUCLEI; GADOLINIUM ISOTOPES; HARTREE-FOCK METHOD; MAGIC NUCLEI; NEUTRON EMISSION; NEUTRONS; NUCLEAR DEFORMATION; PROTON DENSITY; SKYRME POTENTIAL; SULFUR ISOTOPES; SYMMETRY

Citation Formats

Tarasov, V. N., E-mail: vtarasov@kipt.kharkov.ua, Gridnev, K A, Greiner, W, Gridnev, D K, Kuprikov, V I, Tarasov, D V, and Vinas, X. Peninsulas of the neutron stability of nuclei in the vicinity of neutron magic numbers. United States: N. p., 2012. Web. doi:10.1134/S1063778812010139.
Tarasov, V. N., E-mail: vtarasov@kipt.kharkov.ua, Gridnev, K A, Greiner, W, Gridnev, D K, Kuprikov, V I, Tarasov, D V, & Vinas, X. Peninsulas of the neutron stability of nuclei in the vicinity of neutron magic numbers. United States. doi:10.1134/S1063778812010139.
Tarasov, V. N., E-mail: vtarasov@kipt.kharkov.ua, Gridnev, K A, Greiner, W, Gridnev, D K, Kuprikov, V I, Tarasov, D V, and Vinas, X. Sun . "Peninsulas of the neutron stability of nuclei in the vicinity of neutron magic numbers". United States. doi:10.1134/S1063778812010139.
@article{osti_22043808,
title = {Peninsulas of the neutron stability of nuclei in the vicinity of neutron magic numbers},
author = {Tarasov, V. N., E-mail: vtarasov@kipt.kharkov.ua and Gridnev, K A and Greiner, W and Gridnev, D K and Kuprikov, V I and Tarasov, D V and Vinas, X},
abstractNote = {On the basis of the Hartree-Fock method as implemented with Skyrme forces (Ska, SkM*, Sly4, and SkI2) and with allowance for an axial deformation and nucleon pairing in the Bardeen-Cooper-Schrieffer approximation, the properties of extremely neutron-rich even-even nuclei were calculated beyond the neutron drip line known earlier from theoretical calculations. It was shown that the chains of isotopes beyond the neutron drip line that contain N = 32, 58, 82, 126, and 184 neutrons form peninsulas of nuclei stable against the emission of one neutron and, in some cases, peninsulas of nuclei stable against the emission of two neutrons. The neutron- and proton-density distributions in nuclei forming stability peninsulas were found to be spherically symmetric. A mechanism via which the stability of nuclei might be restored beyond the neutron drip line was discussed. A comparison with the results of calculations by the Hartree-Fock-Bogolyubov method was performed for long chains of sulfur and gadolinium isotopes up to the neutron drip line.},
doi = {10.1134/S1063778812010139},
journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 1,
volume = 75,
place = {United States},
year = {2012},
month = {1}
}