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The energy spectra of alpha particles and 6,7Li nuclei emitted at an angle of 0° in the reaction induced by a 56Fe beam (400 MeV) incident on a 238U target were measured by means of the high-resolution magnetic analyzer (MAVR setup) [1]. The resulting spectra (Fig. 1) were found to contain fast alpha particles and 6,7Li nuclei with the energy corresponding to the two-body and three-body exit channels [2]; the energy of alpha particles was close to the two-body kinematical limit. In the region of lower and higher energies, the ratios of the cross sections for the emission of alpha particles to the cross sections for the emission of lithium nuclei are very different, which indicates different mechanisms for the formation of these nuclei. The obtained data were analyzed based on the model of moving sources. The emission of nonequilibrium alpha particles and 6,7Li nuclei in the forward direction is also considered within the quantum time-dependent approach [2, 3].
Fig. 1. Energy spectra of alpha particles (circles), 6Li (squares), and 7Li (triangles) measured at an angle of 0° in the reaction 56Fe (400 MeV) + 238U.
- V.A. Maslov, V.I. Kazacha, I.V. KoIesov, S.M. Lukyanov, V.N. Melnikov,
N.F. Osipov, Yu.E. Penionzhkevich, N.K. Skobelev, Yu.G. Sobolev, E.I. Voskoboinik.
// J. Phys. Conf. Ser. 2016. V. 724. P. 012033. - Yu.E. Penionzhkevich, V.V. Samarin, S.M. Lukyanov, V.A. Maslov, M.A. Naumenko.
// Chin. Phys. C. 2022. V. 46. P. 114002. - V.V. Samarin. // Phys. At. Nucl. 2018. V. 81. P. 486.
| Section | Experimental and theoretical studies of nuclear reactions |
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