Examination of the influence of transfer channels on the barrier height distribution: Scattering of 20Ne on 58Ni, 60Ni, and 61Ni at near-barrier energies

Abstract
Background: It was suggested that the shape of the barrier height distribution can be determined not only by strong reaction channels (collective excitations) but also by weak channels such as transfers and/or noncollective excitations. Purpose: The study of the barrier height distributions for the 20Ne + 58,60,61Ni systems requires information on transfer cross sections at near-barrier energies. Methods: A measurement of the cross sections for various transfer channels at a backward angle (142 degrees), at a near-barrier energy was performed. Identification of products was based on time-of-flight and E-E methods. A measurement of the angular distribution of α stripping in the 20Ne + 61Ni system was performed using a gas E-E telescope. Results: For all three systems studied: 20Ne + 58Ni, 60Ni, and 61Ni total (sum of all transfer channels) cross sections are similar and dominated by α stripping. Conclusions: The results, as well as coupled reaction channel calculations, suggest that transfer is not responsible for smoothing the barrier height distribution in 20Ne + 61Ni, supporting the hypothesis that barrier distribution shapes are influenced by noncollective excitations.
Main Authors
Format
Articles Research article
Published
2016
Series
Subjects
Publication in research information system
Publisher
American Physical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201606092994Use this for linking
Review status
Peer reviewed
ISSN
2469-9985
DOI
https://doi.org/10.1103/PhysRevC.93.054604
Language
English
Published in
Physical Review C
Citation
  • Trzcińska, A., Piasecki, E., Amar, A., Czarnacki, W., Keeley, N., Kisieliński, M., Kliczewski, S., Kowalczyk, M., Lommel, B., Mutterer, M., Siudak, R., Stolarz, A., Strojek, I., Tyurin, G., & Trzaska, W. (2016). Examination of the influence of transfer channels on the barrier height distribution: Scattering of 20Ne on 58Ni, 60Ni, and 61Ni at near-barrier energies. Physical Review C, 93(5), Article 054604. https://doi.org/10.1103/PhysRevC.93.054604
License
Open Access
Copyright© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.

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