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Complete characterization of the fission fragments produced in reactions induced by $^{208}$Pb projectiles on proton at 500A MeV

Abstract : The two fragments produced in fission reactions induced by 208Pb projectiles impinging on a liquid hydrogen target at 500A MeV have been fully identified in coincidence. The experiment was performed at GSI Darmstadt, where the combined use of the inverse kinematics technique with an efficient detection setup permitted one to detect and to fully identify the fission fragments in a range from Z = 27 to Z = 52. The corresponding isotopic cross sections and velocities of the fission fragments weremeasured with high accuracy. The results are compared to state-of-the-art model calculations that reproduce the measured observables. Correlations between the two fragments were used to assess the role of charge polarization and the excitation energy gained by the nascent fragments using the neutron excess of the final fragments. The analysis of the average velocities of the fission fragments allowed us to parametrize the distance between the two fission fragments at scission as a function of the size of the fissioning system.
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http://hal.in2p3.fr/in2p3-01169405
Contributor : Michel Lion <>
Submitted on : Monday, June 29, 2015 - 12:58:45 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:49 PM

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J. L. Rodríguez-Sánchez, J. Benlliure, J. Taïeb, H. Álvarez-Pol, L. Audouin, et al.. Complete characterization of the fission fragments produced in reactions induced by $^{208}$Pb projectiles on proton at 500A MeV. Physical Review C, American Physical Society, 2015, 91 (6), pp.064616. ⟨10.1103/PhysRevC.91.064616⟩. ⟨in2p3-01169405⟩

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