Abstract
New results on the energy dependence of the total cross section (σ R) for 6He scattering on 28Si in the incident energy range 10–28 MeV/A are obtained. The α-particle-production cross sections for the 28Si(6He, 4He)X channel are measured as well. The secondary beam of 6He with an intensity of up to 5×104 particle/s was generated by bombarding a thick beryllium target with ∼32-MeV/A 7Li ions. In the energy region below 17 MeV/A, σ R increases sharply. The experimental dependences of the total cross sections are compared with the results of σ R calculations using the double-folding potential within the optical model. The energy dependence of σ R for 6He differs from that for the neighboring nuclei, which can be associated with the structural features of the former nucleus. The energy spectra of α particles produced in the 6He interactions with silicon indicate two mechanisms of their production: transfer reaction and 6He breakup in the field of the 28Si nucleus.
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Translated from Yadernaya Fizika, Vol. 65, No. 9, 2002, pp. 1609–1614.
Original Russian Text Copyright © 2002 by Kuznetsov, Byalkowski, Ivanov, Kalpakchieva, Kugler, Kukhtina, Kushniruk, Maslov, Mikhailov, Negoita, Penionzhkevich, Poroshin, Skobelev, Smirnov, Sobolev, Ugryumov.
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Kuznetsov, I.V., Byalkowski, E., Ivanov, M.P. et al. Total cross sections for 4,6He + 28Si reactions measured at 10–28 MeV/A. Phys. Atom. Nuclei 65, 1569–1574 (2002). https://doi.org/10.1134/1.1508688
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DOI: https://doi.org/10.1134/1.1508688