[en] Investigations of the decay of hot nuclei with mass A∼200 at excitation energies of 200/600 AMeV are presently carried out at the 4π-facility FOBOS at JINR Dubna. Main efforts are directed to the spectroscopy of correlated fragments from fission accompanied with the emission of intermediate mass fragments and light charged particles. The low registration threshold of the detector array allows registration of masses up to heavy residues. From the independent measurement of the fragment momenta the transferred linear momentum can be determined. It is a considerable good measure for the excitation energy of the composite system after the incomplete fusion reaction. (orig.)