Isotopic Yield Distributions of Transfer- and Fusion-Induced Fission from 238U+12C Reactions in Inverse Kinematics

Abstract

A novel method to access the complete identification in atomic number Z and mass A of fragments produced in low-energy fission of actinides is presented. This method, based on the use of multi- nucleon transfer and fusion reactions in inverse kinematics, is applied in this work to reactions between a 238U beam and a 12C target to produce and induce fission of moderately excited actinides. The fission fragments are detected and fully identified with the VAMOS spectrometer of GANIL, allowing the measurement of fragment yields of several hundreds of isotopes in a range between A ~ 80 and ~ 160, and from Z ~ 30 to ~ 64. For the first time, complete isotopic yield distributions of fragments from well-defined fissioning systems are available. Together with the precise measurement of the fragment emission angles and velocities, this technique gives further insight into the nuclear-fission process.

22 pages, 21 figures

References in corpus (4)

• Measurement of a complete set of nuclides, cross-sections and kinetic energies in spallation of 238U 1A GeV with protons
• Nuclear-fission studies with relativistic secondary beams: analysis of fission channels
• Fission-Residues Produced in the Spallation Reaction 238U+p at 1 A GeV
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Cited by in corpus (19)

• Current Status of r-Process Nucleosynthesis
• Review on the progress in nuclear fission
• Characterization of the scission point from fission-fragment velocities
• Transfer reactions in inverse kinematics, an experimental approach for fission investigations
• Bayesian evaluation of charge yields of fission fragments of 239U
• Dual Position Sensitive MWPC for tracking reaction products at VAMOS++
• Evidence for the role of proton shell closure in quasi-fission reactions from X-ray fluorescence of mass-identified fragments
• First direct measurement of isotopic fission-fragment yields of ${}^{239}$U
• Microscopic dynamical description of proton-induced fission with the Constrained Molecular Dynamics (CoMD) Model
• Scission configuration of ${}^{239}$U from yields and kinetic information of fission fragments
• Fourier-over-Spheroid shape parametrization applied to nuclear fission dynamics
• Benchmark of the GEF model for fission-fragment yields over an enlarged range
• Fast trajectory reconstruction techniques for the large acceptance magnetic spectrometer VAMOS++
• Direct Determination of Fission-Barrier Heights Using Light-Ion Transfer in Inverse Kinematics
• Study of fusion-fission in inverse kinematics with a fragment separator
• Abrasion-fission reactions at intermediate energies
• Seven-dimensional Trajectory Reconstruction for VAMOS++
• Performance of the Particle-Identification Silicon-Telescope Array Coupled with the VAMOS++ Magnetic Spectrometer
• Isotopic fission yields of ${}^{240}$Pu as a function of the excitation energy