Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/49773
Title: Investigation of clustering effects and fragmentation in light mass nuclear systems formed in heavy ion reactions
Authors: Kaur, Manpreet
Singh, Bir Bikram
Patra, S K
Keywords: Clusters;Preformation probability;Dynamical cluster-decay model
Issue Date: Aug-2019
Publisher: NISCAIR-CSIR, India
Abstract: The clustering effects in light mass alpha conjugate 20Ne, 28Si and non-alpha conjugate 21Ne, 22Ne nuclear systems have been investigated comparatively, within the collective clusterization approach of dynamical cluster-decay model. The evolution of cluster structure with temperature at three different temperatures corresponding to ground state, Ikeda’s threshold energy and experimentally available energy has been made by taking into account the modified pairing strength in liquid drop energies. The results present that in addition to xα-type clusters (x is an integer) and xn-xα type clusters in alpha conjugate and non-alpha conjugate nuclear systems, respectively, np-xα type (n–neutron, p-proton) clusters are also preformed significantly at higher experimental excitation energy due to decreased pairing strength in liquid drop energies with rising temperature. Further, the fragmentation analysis has been undertaken at higher excitation energies to explore the reaction mechanism in the decay of different Z = 5, 6, 7 (or complementary Z = 3, 4, 5) fragments/clusters in reference to experimentally available Z-distribution data. The analysis depicts the presence of competing mechanisms of fusion-fission (FF) and deep inelastic orbiting (DIO) in the decay path, where the contribution of DIO cross-section σDIO has been evaluated empirically. The higher contribution of σDIO has been found for C-yield in all three 20Ne*, 21Ne* and 22Ne* nuclear systems and the experimental verification is called for the same. The DCM calculated total cross-sections for different Z-fragments are in agreement with the experimental data.
Page(s): 584-589
URI: http://nopr.niscair.res.in/handle/123456789/49773
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJPAP Vol.57(08) [August 2019]

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