Super-asymmetric fission of heavy nuclei induced by intermediate energy protons

Abstract

In this work we present the results for the investigation of intermediate-mass fragment (IMF) production with the proton-induced reaction at 660 MeV on 238U and 237Np target. The data were obtained with the LNR Phasotron U-400M Cyclotron at Joint Institute for Nuclear Research (JINR), Dubna, Russia. A total of 93 isotopes, in the mass range of 30 < A < 200, were unambiguously identified with high precision. The fragment production cross sections were obtained by means of the induced-activation method in an off-line analysis. Mass-yield distributions were derived from the data and compared with the results of the simulation code CRISP for multimodal fission. A discussion of the super-asymmetric fragment production mechanism is also given.

20 pages, 2 figure. 2 tables

References in corpus (3)

• Photo-fission of 232Th and 238U at intermediate energies
• Proton-induced fission on 241Am, 238U and 237Np at intermediate energies
• Nonmesonic Hyperon Weak Decay Spectra in ${}_{\Lambda }^{12}$C}

Cited by in corpus (5)

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• Fission and spallation data evaluation using induced-activity method
• Comparison of Yields of neutron rich nuclei in Proton and Photon induced ${}^{238}$U fission
• Nuclear medium effects in muonic neutrino interaction with energies from 0.2 GeV to 1.5 GeV
• Energy Dependence of exotic nuclei production cross sections by photofission reaction in GDR range