Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/25360
Title: Experimental probe for the production of Ru 97 from the Li 7 + Nb 93 reaction: A study of precompound emissions
Authors: Kumar D.
Maiti, Moumita
Lahiri S.
Published in: Physical Review C
Abstract: Background: Interaction of weakly bound heavy ions with an intermediate or heavy target is not yet understood completely due to the scarcity of experimental data. In order to develop a clear understanding of breakup fusion or preequilibrium emission even in the low energy range, 3-10 MeV/nucleon, more experimental investigations are necessary. Purpose: We aim to study the reaction mechanisms involved in the weakly bound heavy-ion induced reaction Li7+Nb93 at low energies by measuring the production cross sections of the residual radionuclides. Method: Natural niobium (Nb93) foil, backed by an aluminum (Al) catcher, arranged in a stack was bombarded by Li7 ions of 20-45 MeV energy. Activity of the residues produced in each Nb93 target was measured by off line γ-ray spectrometry after the end of bombardment (EOB) and cross sections were calculated. Experimental cross sections were compared with those computed using compound and precompound models. Results: In general, measured excitation functions of all residues produced in the Li7+Nb93 reaction showed good agreement with the model calculations based on the Hauser-Feshbach formalism and the exciton model for compound and precompound processes, respectively. Significant preequilibrium emission of neutrons was observed at the relatively high energy tail of the excitation function of Ru97. Conclusions: Preequilibrium processes played an important role in the enhancement of the cross section in the xn reaction channel over the compound reaction mechanism at higher energies for the Li7+Nb93 reaction. Additionally, indirect evidence of incomplete or breakup fusion was also perceived. © 2016 American Physical Society.
Citation: Physical Review C, 94(4)
URI: https://doi.org/10.1103/PhysRevC.94.044603
http://repository.iitr.ac.in/handle/123456789/25360
Issue Date: 2016
Publisher: American Physical Society
ISSN: 24699985
Author Scopus IDs: 57225779974
57215382247
35548177300
Author Affiliations: Kumar, D., Department of Physics, Indian Institute of Technology Roorkree, Roorkee, Uttarakhand, 247667, India
Maiti, M., Department of Physics, Indian Institute of Technology Roorkree, Roorkee, Uttarakhand, 247667, India
Lahiri, S., Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India
Funding Details: 
Corresponding Author: Maiti, M.; Department of Physics, India; email: moumifph@iitr.ac.in
Appears in Collections:Journal Publications [PH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.