0000000000846811

AUTHOR

V. G. Tishchenko

showing 2 related works from this author

Manifestation of fine structures in the fission fragment mass-energy distribution of the reaction

2002

Methods of identifying structure peculiarities in two-dimensional distributions of experimental observables are discussed. Structures different from that produced by proton odd-even staggering were revealed for the first time in the mass-energy distribution of fission fragments in the 233 Uðnth; fÞ reaction. The new structures could presumably be linked with fission modes and collective vibrations of the fissioning system. r 2002 Elsevier Science B.V. All rights reserved.

Nuclear physicsPhysicsNuclear and High Energy PhysicsMass energyDistribution (mathematics)ProtonFragment (logic)FissionObservableNuclear ExperimentInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Fine structure in fragment mass-energy distribution from 238U+40Ar (275 MeV)

2003

Existence of a new feature in fragment mass-energy distribution is reported. Careful analysis of the data obtained in the reaction 238U + 40Ar (275 MeV) shows that small but statistically significant ripples visible already in the gross mass spectrum come from extended and regular 2D patterns in the TKE vs. mass matrix. Intensity distributions of these patterns coincide with the location of heavy clusters such as 78Ni, 108Mo, or 132Sn. Presumably, the observed patterns show the dominant trajectories in the elongation vs. mass-asymmetry space of the decaying system. This information, unknown in the past, can shed a new light even on the previously well-studied reactions.

PhysicsNuclear reactionDistribution (mathematics)Fragment (logic)Mass spectrumSpace (mathematics)Mass matrixMolecular physicsIntensity (heat transfer)Spectral line
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