Asymmetric fission of the pre-actinide nuclei

Иткис, М. Г.; Okolovich, V.N.; Rusanov, A. Ya.; Smirenkin, G.N.

doi:10.1007/bf01415720

Cited by 79 publications

(49 citation statements)

References 12 publications

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“…The superposition o f fragment yields from these two channels would sim ultaneously explain mass and kinetic energy distributions. Recently the same idea was applied by Itkis et al [3] to the fission o f the preactinides and by Hulet and coworkers [4] to the very heavy actinides.…”

Section: Introductionmentioning

confidence: 92%

Four Channels in the Fission of ²⁵²Cf

Brösa

Großmann

Müller

1986

Zeitschrift Für Naturforschung A

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Strutinsky-type calculations indicate that the potential energy favors four channels in the nuclear fission o f 252Cf. The connection o f this finding with experimental results on the dis tribution of fragment mass, total kinetic energy, neutron multiplicities, and relative abundances is discussed. Similar calculations for 227Ac, 236U, and 258Fm show that the changing preponder ance of the four channels seems to describe striking trends in the fission o f the actinides, in particular the dip in the total kinetic energy at symmetrical fission of 236U and the enormously high average kinetic energy of the 258Fm fragments.

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Section: Introductionmentioning

confidence: 92%

Four Channels in the Fission of ²⁵²Cf

Brösa

Großmann

Müller

1986

Zeitschrift Für Naturforschung A

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“…3 for a wide range of actinides [20]. The data in the light mass region are taken from [14,34,35]. The difference (B [15].…”

Section: Excitation Function Of Fission Productsmentioning

confidence: 99%

Two-mode fission – experimental verification and characterization of two fission-modes

Nagame

Nakahara

2012

Radiochimica Acta

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Summary.Experimental verification and characterization of the two-mode fission are reviewed. The presence of two independent deformation-paths in low energy fission of actinides is demonstrated by studying correlation among saddle-point configurations, scission-point configurations, and mass-yield distributions; the elongated scission configuration is related with the fission process that goes over a higher threshold energy and results in a symmetric mass-division mode, while the compact scission configuration with the process that experiences a lower threshold ends up with an asymmetric mass-division mode. Based on an extensive systematic analysis of scission properties in a wide range of actinide fission, the bimodal fission observed in the spontaneous fission of the heavy actinides is interpreted as the result of the presence of two fission paths, namely, the ordinary asymmetric fission path and a strongly shell-influenced symmetric mode.

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“…down to 83 Tl, Itkis et al [21], may well justify a "shell" at Z = 36. The importance attributed here to the proton numbers 36 and 54 stems from the Kr and Xe features stressed above coupled with the experimental data.…”

Section: Discussionmentioning

confidence: 92%