Transfer reactions in inverse kinematics: An experimental approach for fission investigations

Abstract : Inelastic and multinucleon transfer reactions between a 238U beam, accelerated at 6.14 MeV/u, and a 12C target were used for the production of neutron-rich, fissioning systems from U to Cm. A Si telescope, devoted to the detection of the targetlike nuclei, provided a characterization of the fissioning systems in atomic and mass numbers, as well as in excitation energy. Cross sections and angular and excitation-energy distributions were measured for the inelastic and transfer channels. Possible excitations of the targetlike nuclei were experimentally investigated for the first time, by means of γ-ray measurements. The decays from the first excited states of 12C, 11B, and 10Be 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 238U, 239Np and 240,241,242Pu and 244Cm were determined as a function of the excitation energy.
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Submitted on : Tuesday, February 25, 2014 - 9:00:09 AM
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C. Rodriguez-Tajes, F. Farget, X. Derkx, M. Caamano, O. Delaune, et al.. Transfer reactions in inverse kinematics: An experimental approach for fission investigations. Physical Review C, American Physical Society, 2014, 89, pp.024614. ⟨10.1103/PhysRevC.89.024614⟩. ⟨in2p3-00951556⟩

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