Deformation effects in the alpha accompanied cold ternary fission of even-even 244-260Cf isotopes

Santhosh, K. P.; Krishnan, Sreejith

doi:10.1140/epja/i2016-16108-0

Cited by 15 publications

(6 citation statements)

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“…For the α-accompanied ternary fission of 252 Cf, we have also presented the comparison of our calculated isotopic ternary yields at T = 1 and 2 MeV (solid circles) with the experimental data (solid squares) and other available theoretical model [33,35,41] results (open and asterisk symbols) in figure 7. As mentioned earlier, the experimental data and other theoretical model results are for cold spontaneous fission but our presented results are for fragment excitation energies at T = 1 and 2 MeV.…”

Section: Resultsmentioning

confidence: 99%

“…Further, the ternary fragmentation of 252 Cf for all possible third fragments was also investigated in a triangular configuration [37] as well as in collinear configuration [38]. Within the unified ternary fission model, Santhosh et al [39][40][41] studied the cold alpha accompanied ternary fission of -Cf nuclei. Further, they have also calculated the ternary emission probability and kinetic energies of the long-range α-particles which are found to be in good agreement with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

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Fragments mass and charge distribution in the light particle accompanied fission of²⁵²Cf

Karthikraj

Ren

2017

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

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The ternary fission mass and charge distribution of 252Cf for different light third fragments (A3 = 4He, 10Be, 14C, 20O, 20Ne and 24Ne) are studied with the use of statistical theory of fission. Two different approaches are adopted to generate the possible ternary fragment combinations: in one case, the Z/A of the products is the same as 252Cf, in the other the finite-range droplet model (FRDM) data are used, creating all the possible combinations also with different Z/A. For the calculation of the nuclear level densities, single-particle level energies of FRDM are also used. When the lighter fragment A3 is 4He, our calculated mass and charge distribution results, at T = 1 MeV, show the larger yield for the deformed fragment combinations which is in line with the experimental observation. Interestingly, for various third fragments, our calculated results at T = 2 MeV indicate that the favorable ternary configuration contains closed shell nucleus either Pb or Sn as the heaviest fragment. In addition, we have compared our calculated ternary isotopic yields with the available experimental and theoretical data.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fragments mass and charge distribution in the light particle accompanied fission of²⁵²Cf

Karthikraj

Ren

2017

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

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“…The possibility of true ternary fission in 252 Cf was studied based on the three cluster model (TCM) [34]. Santhosh and Krishnan [35] have studied the α accompanied ternary fission of various even-even Cf isotopes using the unified ternary fission model (UTFM). Using the one-dimensional Wentzel-Kramers-Brillouin (WKB) approximation, the barrier penetrability P and hence the relative yield was calculated for the spherical and deformed fragments.…”

Section: Introductionmentioning

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 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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“…Yao et al [31] used different proximity potentials to calculate the half-lives of the alpha decay for even-even nuclei from light to heavy mass. The proximity potential has been used broadly for studies in the areas of alpha decay [32][33][34][35], cluster decay [36][37][38][39], ternary fission [40][41][42], alpha decay of heavy and superheavy nuclei [43][44][45] and cluster radioactivity of superheavy nuclei [44]. In the present work, which is an extension of our earlier work [46], we have computed the penetrability and half-lives using the two different proximity potentials for the cold binary fission of 230-250 U isotopes, which were compared with the available experimental data collected from Holden et al [47].…”

Section: Introductionmentioning

confidence: 99%

Studies on the cold binary fragmentation of even–even 230–250U isotopes

Santhosh

Cyriac

2019

Comptes Rendus. Physique

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Radioactivité des particules lourdes Fission spontané Fission froide binaireWithin the framework of the Coulomb and proximity potential model (CPPM), we studied the cold binary fission of even-even 230-250 U isotopes using the two versions of the nuclear proximity potential, Proximity 1977 and Proximity 2000. The most favorable binary fission path is the one that has a high Q value and a minimum driving potential with respect to the mass and charge asymmetries. A nucleus with doubly-closed shell or near doublyclosed shell always appears as the heaviest nucleus in the favored channel of the binary fission of all the mentioned isotopes. For the 230,232,234 U isotopes, the highest yield was predicted for the isotope of Pb (Z = 82) as one fragment, whereas for the 236 U isotope, fragmentation with the isotope of Hg (Z = 80) as one fragment possesses the highest yield. For the 238 U isotope, fragmentation with the isotope of Pt (Z = 78, N = 126) as one fragment possesses the highest yield. In the case of the 240,242,244,246,248,250 U isotopes, the highest yield is for the fragmentation with Sn (Z = 50) as one fragment. It was found that asymmetric splitting is superior for U isotopes with mass number A ≤ 238 and symmetric splitting is superior for U isotopes with A ≥ 240. The computed penetrability and half-lives using the two different proximity potentials for the cold binary fission of 230-250 U isotopes were compared with the available experimental data collected from Holden et al. [Pure Appl. Chem. 72 (2000) 1525]. The two results were found to be in agreement with each other.

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Deformation effects in the alpha accompanied cold ternary fission of even-even 244-260Cf isotopes

Cited by 15 publications

References 54 publications

Fragments mass and charge distribution in the light particle accompanied fission of²⁵²Cf

Fragments mass and charge distribution in the light particle accompanied fission of²⁵²Cf

Pre-existence probability for the ternary fission of Cf isotopes

Studies on the cold binary fragmentation of even–even 230–250U isotopes

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Deformation effects in the alpha accompanied cold ternary fission of even-even 244-260Cf isotopes

Cited by 15 publications

References 54 publications

Fragments mass and charge distribution in the light particle accompanied fission of252Cf

Fragments mass and charge distribution in the light particle accompanied fission of252Cf

Pre-existence probability for the ternary fission of Cf isotopes

Studies on the cold binary fragmentation of even–even 230–250U isotopes

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Product

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Fragments mass and charge distribution in the light particle accompanied fission of²⁵²Cf

Fragments mass and charge distribution in the light particle accompanied fission of²⁵²Cf