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Title: Fusion of calcium isotopes and of nearby systems

Abstract

Very recent data on {sup 40,48}Ca+{sup 40,48}Ca are presented. In all cases fusion hindrance far below the barrier has been observed. Coupled-channel effects influence the threshold energy for hindrance. The excitation functions of the two symmetric systems are similar, while the case of {sup 40}Ca+{sup 48}Ca is different both above and below the barrier, possibly due to couplings to transfer channels with Q > 0. Other systems in the same mass region show different trends that have to be related to the nuclear structure of the colliding nuclei. Investigating the behavior of lighter systems will be interesting also from the astrophysical point of view.

Authors:
 [1]
  1. INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Padova (Italy)
Publication Date:
OSTI Identifier:
22075627
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1491; Journal Issue: 1; Conference: Conference on nuclear structure and dynamics 2012, Opatija (Croatia), 9-13 Jul 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; CALCIUM 40; CALCIUM 40 REACTIONS; CALCIUM 40 TARGET; CALCIUM 48; CALCIUM 48 REACTIONS; CALCIUM 48 TARGET; COUPLED CHANNEL THEORY; COUPLING; EXCITATION FUNCTIONS; HEAVY ION FUSION REACTIONS; MASS; NUCLEAR STRUCTURE; SYMMETRY; THRESHOLD ENERGY

Citation Formats

Stefanini, A. M. Fusion of calcium isotopes and of nearby systems. United States: N. p., 2012. Web. doi:10.1063/1.4764261.
Stefanini, A. M. Fusion of calcium isotopes and of nearby systems. United States. doi:10.1063/1.4764261.
Stefanini, A. M. Sat . "Fusion of calcium isotopes and of nearby systems". United States. doi:10.1063/1.4764261.
@article{osti_22075627,
title = {Fusion of calcium isotopes and of nearby systems},
author = {Stefanini, A. M.},
abstractNote = {Very recent data on {sup 40,48}Ca+{sup 40,48}Ca are presented. In all cases fusion hindrance far below the barrier has been observed. Coupled-channel effects influence the threshold energy for hindrance. The excitation functions of the two symmetric systems are similar, while the case of {sup 40}Ca+{sup 48}Ca is different both above and below the barrier, possibly due to couplings to transfer channels with Q > 0. Other systems in the same mass region show different trends that have to be related to the nuclear structure of the colliding nuclei. Investigating the behavior of lighter systems will be interesting also from the astrophysical point of view.},
doi = {10.1063/1.4764261},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1491,
place = {United States},
year = {2012},
month = {10}
}