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Fusion mechanism of weakly bound stable ($^{6, 7}$Li and $^{9}$Be) and unstable halo ($^{11}$Li, $^{7,11}$Be, and $^{8}$B) nuclei is a subject of great interest from the past few years [1,2]. Due to their low breakup threshold, various reaction processes like complete-incomplete fusion (CF-ICF), elastic breakup, and transfer followed by a breakup, appear in the reaction dynamics. Hence, to study the CF-ICF mechanisms and its dependency on entrance channel parameters in $^7$Li+$^{89}$Y reaction an experiment was performed at the BARC-TIFR Pelletron facility Mumbai, India, using activation technique within the 2.7–5.7 MeV/nucleon energy range. The γ-spectrometry has been used to identify the residues and residual cross-sections have been measured. A systematic analysis of the complete and incomplete fusion dynamics has been carried out by comparing the measured excitation functions with the equilibrium and pre-equilibrium reaction models in the framework of statistical reaction codes EMPIRE3.2.2 and ALICE19. A strong indication of incomplete fusion has been realized within the energy range considered; hence the strength of incomplete fusion fraction (F$_{ICF}$) has been deduced. F$_{ICF}$ shows an increasing trend with increasing projectile energy [3]. Further, barrier height and radius parameters extracted from the measured data are in good agreement with the Bass model.
References:
[1] L. F. Canto et al., Phys. Rep. 596, 1 (2015).
[2] R. Prajapat and M. Maiti, Phys. Rev. C 101, 064620 (2020).
[3] R. Prajapat and M. Maiti, Phys. Rev. C 101, 024608 (2020).
| Field of your work | Experiental nuclear physics |
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