Abstract
In reference to the experimental data, the decay mechanism of 88Mo* compound system formed in 48Ti+40Ca reaction is investigated at three beam energies (Ebeam = 300, 450, and 600 MeV) using the collective clusterization approach of Dynamical Cluster decay Model (DCM). The calculations are done for spherical choice of fragmentation and with the inclusion of quadrupole (β2) deformations having “optimum” orientations. According to the experimental evidence 88Mo* decays via Fusion-Evaporation (FE) and Fusion-Fission (FF) processes, thus the decay cross-sections of this hot and rotating compound system are calculated for both channels. In FF decay mode, the explicit contribution of Intermediate Mass Fragments (IMF), Heavy Mass Fragments (HMF) and fission fragments (symmetric/asymmetric) is detected within DCM framework. The calculated FE and FF decay cross-sections find nice agreement with the available experimental data. Experimentally, it has been observed that the total contribution of FE and FF decay cross-sections is less than the total reaction cross-sections possibly due to the presence of some nCN component such as deep inelastic collisions (DIC), which generally contributes above critical angular momentum (ℓcr). The possibility of DIC contribution can be addressed as a future assignment in view of diminishing pocket of interaction potential above ℓcr.
Highlights
The quest to understand different nuclear structural properties and related dynamics has always been an interesting and challenging topic for both experimental and theoretical nuclear physicists
We present the decay Model (DCM)-calculated results for different decay modes of 88Mo∗ composite system formed in 48Ti + 40Ca reaction
To investigate the probability of different decay modes participating in the exit channel, the variation of summed up preformation probability (ΣP0) with respect to angular momentum is plotted for possible decay channels: FE, Intermediate Mass Fragments (IMF), Heavy Mass Fragments (HMF), and fission and the results are displayed in Fig. 2 at Elab = 300 MeV for both spherical and β2-deformed fragmentation paths
Summary
The quest to understand different nuclear structural properties and related dynamics has always been an interesting and challenging topic for both experimental and theoretical nuclear physicists. The decay of different compound nuclei formed in variety of Heavy Ion Induced Reactions (HIRs) at low energy range has become a compelling subject [1], since it helps to produce new isotopes that may not occur naturally. Such mechanisms provide comprehensive knowledge of numerous nuclear properties and related structural and dynamical effects. The decay dynamics of compound nuclei having light mass (ACN ≤ 90) provide a lot of interesting opportunities, such as the exploration of competing nature of different compound nucleus mechanisms such as Fusion-Evaporation (FE; A ≤ 4) and Fusion-Fission (FF).
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