Nuclear level density and the mass distribution of fission fragments

Rajasekaran, M.; Devanathan, V.

doi:10.1103/physrevc.24.2606

Cited by 20 publications

(14 citation statements)

References 21 publications

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“…with A P , Z P and A i , Z i (i = 1 and 2) correspond to mass and charge numbers of the parent nucleus and the fission fragments [6]. The constraints, A 1 + A 2 = A, Z 1 + Z 2 = Z and A 1 ≥ A 2 are imposed to satisfy the conservation of charge and mass number in a nuclear fission process and to avoid the repetition of fission fragments.…”

Section: Formalismmentioning

confidence: 99%

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Relative mass distributions of neutron-rich thermally fissile nuclei within a statistical model

et al. 2017

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We study the binary mass distribution for the recently predicted thermally fissile neutron-rich uranium and thorium nuclei using statistical model. The level density parameters needed for the study are evaluated from the excitation energies of temperature dependent relativistic mean field formalism. The excitation energy and the level density parameter for a given temperature are employed in the convolution integral method to obtain the probability of the particular fragmentation. As representative cases, we present the results for the binary yield of 250 U and 254 Th. The relative yields are presented for three different temperatures T = 1, 2 and 3 MeV.

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Section: Formalismmentioning

confidence: 99%

“…Here, we adopt the statistical model developed by Fong [5]. The calculation is further extended by Rajasekaran and Devanathan [6] to study the binary mass distributions using the single particle energies of the Nilsson model. The obtained results are well in agreement with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

Relative mass distributions of neutron-rich thermally fissile nuclei within a statistical model

et al. 2017

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“…In the work of Rajasekaran and Devanathan [22], the mass distribution for the binary fission of a parent nucleus is obtained by considering charge-to-mass ratios of the fissioning fragments. The same idea is extended to ternary fission as…”

Section: Modelmentioning

confidence: 99%

“…Using the concept of mass asymmetry, Maruhn and Greiner [21] have developed a microscopic theory and calculated the mass distribution of the fission fragments of 226 Ra, 236 U, and 258 Fm nuclei, giving rise to triple-humped, asymmetric, and symmetric fission mass distributions, respectively. On the basis of statistical theory, Rajasekaran and Devanathan [22] studied the mass distribution of fission fragments from the binary fission of 236 U, 240 Pu, and 258 Fm nuclei. They used single-particle energies from the Nilsson model to calculate the level densities.…”

Section: Introductionmentioning

confidence: 99%

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Ternary-fission mass distribution ofCf252: A level-density approach

et al. 2014

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We study here the ternary-fission mass distribution of the 252 Cf nucleus for a fixed third fragment 48 Ca using the level-density approach within the framework of statistical theory. For the evaluation of nuclear level densities, the single-particle energies of the finite-range droplet model are used. Our results for temperatures T = 1 and 2 MeV reproduce qualitatively the experimental expectation of ternary fragmentation of 132 Sn + 72 Ni + 48 Ca. In addition, different possible ternary-fission modes are highlighted.

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