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Title: Fusion of {sup 48}Ca+{sup 48}Ca Far Below the Barrier

Abstract

In recent years, a puzzling pattern has been observed in fusion cross sections well below the Coulomb barrier, characterized as a departure from the exponential-like behavior predicted by standard coupled-channels models, known as fusion hindrance. We report on recent fusion measurements performed at the Laboratori Nazionali di Legnaro, in particular the {sup 48}Ca+{sup 48}Ca reaction down to the level of 0.6 {mu}b. Unlike most recent results in this field, we do not observe the typical divergent behavior of the logarithmic derivative; but rather a sort of saturation, albeit at a larger value than predicted with a standard nucleus-nucleus potential.

Authors:
; ;  [1]; ; ; ; ;  [2]; ; ;  [3];  [4]
  1. Dipartimento di Fisica 'G. Galilei', Universita di Padova and INFN Sezione di Padova, via Marzolo 8, I-35231 Padova (Italy)
  2. INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova) (Italy)
  3. IPHC, CNRS-IN2P3, Universite de Strasbourg, F-67037 Strasbourg Cedex 2 (France)
  4. Ruder Boskovic Institute, HR-10002 Zagreb (Croatia)
Publication Date:
OSTI Identifier:
21322854
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1165; Journal Issue: 1; Conference: International conference on nuclear structure and dynamics '09, Dubrovnik (Croatia), 4-8 May 2009; Other Information: DOI: 10.1063/1.3232119; (c) 2009 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; CALCIUM 48 REACTIONS; CALCIUM 48 TARGET; COULOMB FIELD; COUPLED CHANNEL THEORY; CROSS SECTIONS; HEAVY ION FUSION REACTIONS; NUCLEON-NUCLEON POTENTIAL

Citation Formats

Scarlassara, F, Montagnoli, G, Mason, P, Stefanini, A M, Silvestri, R, Corradi, L, Fioretto, E, Guiot, B, Courtin, S, Haas, F, Lebhertz, D, and Szilner, S. Fusion of {sup 48}Ca+{sup 48}Ca Far Below the Barrier. United States: N. p., 2009. Web. doi:10.1063/1.3232119.
Scarlassara, F, Montagnoli, G, Mason, P, Stefanini, A M, Silvestri, R, Corradi, L, Fioretto, E, Guiot, B, Courtin, S, Haas, F, Lebhertz, D, & Szilner, S. Fusion of {sup 48}Ca+{sup 48}Ca Far Below the Barrier. United States. https://doi.org/10.1063/1.3232119
Scarlassara, F, Montagnoli, G, Mason, P, Stefanini, A M, Silvestri, R, Corradi, L, Fioretto, E, Guiot, B, Courtin, S, Haas, F, Lebhertz, D, and Szilner, S. 2009. "Fusion of {sup 48}Ca+{sup 48}Ca Far Below the Barrier". United States. https://doi.org/10.1063/1.3232119.
@article{osti_21322854,
title = {Fusion of {sup 48}Ca+{sup 48}Ca Far Below the Barrier},
author = {Scarlassara, F and Montagnoli, G and Mason, P and Stefanini, A M and Silvestri, R and Corradi, L and Fioretto, E and Guiot, B and Courtin, S and Haas, F and Lebhertz, D and Szilner, S},
abstractNote = {In recent years, a puzzling pattern has been observed in fusion cross sections well below the Coulomb barrier, characterized as a departure from the exponential-like behavior predicted by standard coupled-channels models, known as fusion hindrance. We report on recent fusion measurements performed at the Laboratori Nazionali di Legnaro, in particular the {sup 48}Ca+{sup 48}Ca reaction down to the level of 0.6 {mu}b. Unlike most recent results in this field, we do not observe the typical divergent behavior of the logarithmic derivative; but rather a sort of saturation, albeit at a larger value than predicted with a standard nucleus-nucleus potential.},
doi = {10.1063/1.3232119},
url = {https://www.osti.gov/biblio/21322854}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1165,
place = {United States},
year = {Wed Aug 26 00:00:00 EDT 2009},
month = {Wed Aug 26 00:00:00 EDT 2009}
}