We investigate inclusive electron scattering reactions on two-neutron halo
nuclei in the quasielastic region. Expressions for the cross section and
structure functions are given assuming that the halo nucleus can be described
as a three-body system (core+n+n). The method is applied to 6He. We
compute cross sections and structure functions, and investigate the kinematic
conditions for which the observables are determined either by α-knockout
or by halo neutron-knockout. The optimal kinematical domain to disantangle the
momentum distributions of the various components of the three--body system (q≲200 MeV/c and ω<q2/2MN​+20 MeV) are explored.Comment: 10 pages, 3 figures. Physics Letters B, in pres