Surface, Asymmetric, Coulomb, Pairing and Shell Effects on Cluster Radioactivity of Superheavy Nuclei with $$104\le Z \le 126$$

Within the macroscopic approach, investigation of different decay modes such as alpha decay,cluster decay (12C to 40Ca), HPR, (58Ni to 85Rb) and SF half-lives are investigated in detail in the SHE, Z=119. The decay energies, penetration probability and different decay half-lives in the isotopes of SHN 290−303119 are evaluated. Both 12C and 40Ar cluster emissions reveal shorter half-lives when compared to other cluster emissions. Furthermore, 85Rb heavy particle emission from the SHN 290−303119 discloses shorter half-lives compared to other heavy particle emissions. From the comparison of different decay half-lives, it is observed that 85Rb HPR is dominant in the region 290−299119, alpha decay is dominant for the 300−302119 and SF half-lives are predominant in 303119 nuclei. Hence, the prediction of decay modes and decay path in the SHE, Z=119 are helpful in the identification of experimentally synthesized SHE.

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Half-lives and fragments of spontaneous fission of superheavy elements

Manjunatha,

Sridhar,

Sowmya

et al. 2024

Mod. Phys. Lett. A

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The isotopic yield and half-lives of the spontaneous fission of superheavy nuclei [Formula: see text] and [Formula: see text] are studied. First, the theoretical formalism is validated by applying it to known isotopes of superheavy nuclei which can undergo spontaneous fission. Half-lives obtained from this work indicate that all the half-lives are approximately twice when compared to experimental measurements. Thereafter, we explored the isotopic yield and half-lives of spontaneous fission for the superheavy nuclei [Formula: see text] and [Formula: see text] by studying the driving potential, yield and penetration probability. The superheavy nuclei [Formula: see text] can undergo alpha decay up to [Formula: see text]. Thereafter they undergo spontaneous fission. Similarly, the superheavy nuclei [Formula: see text] undergo spontaneous fission beyond A=309. It is observed that the superheavy nuclei [Formula: see text] undergo spontaneous fission through the fission fragment combination of Sn+Tm, however, the superheavy nuclei [Formula: see text] undergo spontaneous fission with the fragments Sn+Yb. The larger spontaneous half-life is of the order of ns from the superheavy nuclei [Formula: see text]119 and [Formula: see text]120. Further investigations were required in the evaluation of the anticipated fission fragment combinations and half-lives of [Formula: see text]119 and [Formula: see text]120.

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Surface, Asymmetric, Coulomb, Pairing and Shell Effects on Cluster Radioactivity of Superheavy Nuclei with $$104\le Z \le 126$$

Cited by 3 publications

References 47 publications

Prediction of cluster decay using CPPM and MGLDM models for SHN with $$105\le Z \le 125$$

Prediction of cluster decay using CPPM and MGLDM models for SHN with $$105\le Z \le 125$$

Radioactive decay properties of superheavy element Z = 119

Half-lives and fragments of spontaneous fission of superheavy elements

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