Search for a viable nucleus–nucleus potential in heavy-ion nuclear reactions

Nandi, T.; Swami, Deepak; Gupta, Puja; Kumar, Y V Ravi; Chakraborty, S.; Manjunatha, H. C.

doi:10.1007/s12043-022-02331-0

Cited by 7 publications

(1 citation statement)

References 114 publications

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“…the distance between the projectile and target nuclei at the projectile energy E cm = B fus . It is obvious from the above equation that R b and B fus have a major impact on , and these values have been taken from the empirical formula, recently developed by us [29], as given below:…”

Section: Deformation Effects On the Synthesis Of Shesmentioning

confidence: 99%

Rules of thumb for synthesizing superheavy elements

Manjunatha¹,

Vidya²,

Gupta³

et al. 2022

J. Phys. G: Nucl. Part. Phys.

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Synthesizing any elements in the eighth period using either cold or hot fusion reactions remains a big challenge till date. Quasifission mechanism restricts complete fusion to an indeterminably low evaporation residue (ER) cross section for the superheavy nuclei. Entrance channel parameters of the heavy-ion reaction, fission barrier of compound nucleus, deformation parameters of the projectile and target nuclei, and the kinetic energy of the projectile are mostly responsible in governing the scales of the quasifission. Role of these factors has been examined explicitly by the experimental ER cross sections. Thorough comparisons lead us to infer that the entrance channel criteria contribute much lower extent than the deformation parameters do. The effect of deformation can be categorized into four rules as validated by all the reactions used except one $^{45}_{21}$Sc+$^{249}_{98}$Cf $\rightarrow ^{294}_{119}$Uue. Null result from this reaction is well explained by an improper choice of the projectile energy as shown theoretically by means of a statistical model approach, which is valid for a system having a large nucleon number so as to have intrinsically a high density of excited states. Optimal selection of the beam energy sets another rule. Therefore, these five rules can be treated as the rules of thumb for synthesizing the superheavy elements. Application of the first four rules can enable us to spot primarily a suitable reaction and finally exploitation of the fifth rule chooses the most appropriate reaction at a preferable excited energy to achieve the highest ER cross section for a superheavy element.

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Section: Deformation Effects On the Synthesis Of Shesmentioning

confidence: 99%