%0 Journal Article %T Gravitational Collapse of a Radiating Shell %A G. L. Alberghi %A R. Casadio %A G. P. Vacca %A G. Venturi %J Physics %D 2001 %I arXiv %R 10.1103/PhysRevD.64.104012 %X We study the collapse of a self-gravitating and radiating shell. Matter constituting the shell is quantized and the construction is viewed as a semiclassical model of possible black hole formation. It is shown that the shell internal degrees of freedom are excited by the quantum non-adiabaticity of the collapse and, consequently, on coupling them to a massless scalar field, the collapsing matter emits a burst of coherent (thermal) radiation. %U http://arxiv.org/abs/gr-qc/0102014v2