  We study the collision of a highly energetic light closed string off a stack
of Dp-branes at (sub)string-scale impact parameters and in a regime justifying
a perturbative treatment. Unlike at larger impact parameters - where elastic
scattering and/or tidal excitations dominate - here absorption of the closed
string by the brane system, with the associated excitation of open strings
living on it, becomes important. As a first step, we study this phenomenon at
the disk level, in which the energetic closed string turns into a single heavy
open string at rest whose particularly simple properties are described.
