Transfer reactions in inverse kinematics, an experimental approach for fission investigations

Abstract

Inelastic and multi-nucleon transfer reactions between a ${}^{238}$U beam, accelerated at 6.14 MeV/u, and a ${}^{12}$C target were used for the production of neutron-rich, fissioning systems from U to Cm. A Si telescope, devoted to the detection of the target-like nuclei, provided a characterization of the fissioning systems in atomic and mass numbers, as well as in excitation energy. Cross-sections, angular and excitation-energy distributions were measured for the inelastic and transfer channels. Possible excitations of the target-like nuclei were experimentally investigated for the first time, by means of g -ray measurements. The decays from the first excited states of ${}^{12}$C, ${}^{11}$B and ${}^{10}$Be were observed with probabilities of 0.12 - 0.14, while no evidence for the population of higher-lying states was found. Moreover, the fission probabilities of ${}^{238}$U, ${}^{239}$Np and ${}^{240,241,242}$Pu and ${}^{244}$Cm were determined as a function of the excitation energy.

16 pages, 12 figures

Cited by in corpus (12)

• Review on the progress in nuclear fission
• Characterization of the scission point from fission-fragment velocities
• 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
• Experimental evidence of the effect of nuclear shells on fission dissipation and time
• Fast trajectory reconstruction techniques for the large acceptance magnetic spectrometer VAMOS++
• Direct Determination of Fission-Barrier Heights Using Light-Ion Transfer in Inverse Kinematics
• Time-dependent mean field determination of the excitation energy in transfer reactions: application to the reaction ${}^{238}$U on ${}^{12}$C at 6.14 MeV/A
• Study of fusion-fission in inverse kinematics with a fragment separator
• 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