Abstract:
The experimentally measured excitation functions for the fission and 4n evaporation channels are presented for the 6He + 209Bi reaction. The secondary 6He beam was produced using the special beam line (Q4DQ-spectrometer) of the U400M accelerator at FLNR, JINR. The comparison of the obtained experimental data with similar results for the 4He + 209Bi reaction shows that in the case of the 6He + 209Bi reaction a significant enhancement of the cross-section is observed for energies above the barrier. In order to get an agreement between the experimental data and the theoretical calculations it is necessary to reduce the Coulomb barrier by 15-20% , which corresponds to an increase of the parameter r0 of the nuclear potential up to 1.5-1.6 fm.
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Received: 1 May 2001 / Accepted: 4 December 2001
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Penionzhkevich, Y., Muzychka, Y., Lukyanov, S. et al. Fusion-fission reactions induced by 6He-ions. Eur Phys J A 13, 123–127 (2002). https://doi.org/10.1140/epja1339-23
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DOI: https://doi.org/10.1140/epja1339-23