Proton-induced reactions on 6He at low energies

N. K. Timofeyuk and I. J. Thompson
Phys. Rev. C 61, 044608 – Published 15 March 2000; Erratum Phys. Rev. C 65, 039901 (2002)
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Abstract

Finite-range coupled channel calculations of proton-induced reactions on 6He have been performed below the 6He three-body breakup threshold, assuming that the α particle core is inert. The coupling scheme included all transitions between open channels and therefore no imaginary parts of the interaction potentials were used. The calculations have revealed a complicated dynamics of the p+6He interaction at the chosen energy, with couplings to all open channels being important to generate the final cross sections. The total absorption from the elastic p+6He channel depends on the details of the interactions employed in the three-body model of 6He and shows a strong correlation with the r.m.s. radius of 6He. The role of the exchange mechanisms was investigated within the framework of the distorted-wave Born approximation. It was found that both the triton exchange 6He(p,4He)t and two-neutron 6He(p,t)4He direct transfer mechanisms produce comparable cross sections. The investigation of the radiative capture 6He(p,γ)7Li in the potential model shows strong suppression of the E1 transition because of the destructive interference between the external and internal contributions to the reaction amplitude and the absorption in the incident channel.

  • Received 8 September 1999

DOI:https://doi.org/10.1103/PhysRevC.61.044608

©2000 American Physical Society

Erratum

Erratum: Proton induced reactions on 6He at low energies [Phys. Rev. C 61, 044608 (2000)]

N. K. Timofeyuk and I. J. Thompson
Phys. Rev. C 65, 039901 (2002)

Authors & Affiliations

N. K. Timofeyuk and I. J. Thompson

  • University of Surrey, Guildford, Surrey GU2 5XH, United Kingdom

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Issue

Vol. 61, Iss. 4 — April 2000

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