Interaction of three fission fragments and yields of various ternary fragments

Denisov, V. Yu.; Pilipenko, N. A.; Sedykh, I. Yu.

doi:10.1103/physrevc.95.014605

Cited by 17 publications

(3 citation statements)

References 59 publications

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“…Further, the role of quadrupole deformation of the fragments in the probability distribution is studied by assuming the two heavier fragments (A 1 and A 2 ) as deformed. Higher order deformation of the fragments are not considered as it has smaller influence on the potential energy estimation [59,60]. In both cases, the fixed third fragment, A 3 is considered as spherical.…”

Section: Ternary Pre-existence Probabilitymentioning

confidence: 99%

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Pre-existence probability for the ternary fission of Cf isotopes

Kokila

Balasubramaniam

2020

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

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The pre-existence probability for the spontaneous ternary breakup of neutron deficient to neutron rich parent nuclei of Cf isotopes from 242Cf to 256Cf with different third fragments such as 4He, and N = Z and N ≠ Z clusters like 12,14C, 16,20O, 20,24Ne, and 48,50Ca is studied here. A simple analytical formula is used to calculate the pre-existence probability. The ternary breakup combinations are computed by the charge minimization procedure. For 4He as the third fragment, the inclusion of deformation shifts the most probable distribution of 252Cf parent system from 132Sn to 140Xe which is as per the experimental observations. An enhancement in the relative yield is observed when the distance between the main fission fragment is reduced. In the spherical calculations for A 3 = 12C and 14C, the yield distribution is identical and the heavy group remains as 132Sn but for the deformed calculations with A 3 = 14C, the light group remains the same as 114Ru for neutron-rich parent nuclei. For O and Ne clusters, with the increase in neutron number of parent system, the asymmetric yield distribution changes to symmetric one. For heavier clusters, 48Ca and 50Ca, the favorable fragmentation is observed as Sn + Ni, which is in agreement with experimental predictions.

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Section: Ternary Pre-existence Probabilitymentioning

confidence: 99%

“…with V 0 C i j and V 0 P i j as defined above. For the deformed fragments, the interaction potential is evaluated as in references [59,60,63]. Only the quadrupole deformation of the fragments is considered which are taken from [64].…”

Section: Interaction Potentialmentioning

confidence: 99%

Pre-existence probability for the ternary fission of Cf isotopes

Kokila

Balasubramaniam

2020

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

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“…The angular momentum l in the aforementioned formulae (equations ( 9)-( 12)) can be determined using the conservation rules of momentum and parity as [55,56] As early mentioned, the de-excitation of super-heavy nuclei can mainly proceed through alpha emission or spontaneous fission. The competition between these processes is determined based on a branching ratio, B SF , which is defined as…”

Section: Akarawy Approach (Akra)mentioning

confidence: 99%

Evaluation for half-lives in α-decay chains of ^309−312126 based on semi-empirical approaches

Ly¹,

Nguyen²,

Chae³

et al. 2020

Phys. Scr.

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In this paper, we estimated half-lives using semi-empirical formulae for isotopes with Z = 100 − 126 in four α-decay chains, which can appear in the syntheses of the 309−312126 nuclei. The spontaneous fission half-lives were calculated using the Anghel, Karpov, and Xu models, whereas the α-decay ones were predicted using the Viola-Seaborg, Royer, Akrawy, Brown, modified formulae of Royer, Ni, and Qian approaches. We found that there are large differences among the spontaneous fission half-lives estimated using the Xu model and those calculated using the others, which are up to 50 orders of magnitude. The α-decay half-lives also have large uncertainties due to difference in either methods or uncertainties in nuclear mass and spin-parities. Subsequently, there is an argument in determination of α-emitters, especially for the 312126 isotope. On the other hand, the α-decay half-lives are in the range from a few microseconds (309−312126) to thousands of years (257−260Fm) in the decay chains. It was found that the half-lives are very sensitive to not only the shell closure but also the angular momentum in the α decay. For experiments, with relatively long half-lives (a few milliseconds), the 289−292Lv isotopes can be observed as evidences for syntheses of the unknown super-heavy 309−312126 nuclei. Furthermore, measurements for precise mass, fission barrier, and spin-parity are necessary to improve accuracy of half-life predictions for super-heavy nuclei.

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A detail investigation on quaternary, ternary, and binary fission of Nobelium

Babu,

Dhananjaya,

Manjunatha

et al. 2024

Indian J Phys

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Interaction of three fission fragments and yields of various ternary fragments

Cited by 17 publications

References 59 publications

Pre-existence probability for the ternary fission of Cf isotopes

Pre-existence probability for the ternary fission of Cf isotopes

Evaluation for half-lives in α-decay chains of ^309−312126 based on semi-empirical approaches

A detail investigation on quaternary, ternary, and binary fission of Nobelium

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Interaction of three fission fragments and yields of various ternary fragments

Cited by 17 publications

References 59 publications

Pre-existence probability for the ternary fission of Cf isotopes

Pre-existence probability for the ternary fission of Cf isotopes

Evaluation for half-lives in α-decay chains of 309−312126 based on semi-empirical approaches

A detail investigation on quaternary, ternary, and binary fission of Nobelium

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Product

Resources

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Evaluation for half-lives in α-decay chains of ^309−312126 based on semi-empirical approaches