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c~ particles were measured in coincidence with projectile-like reaction products (oxygen and carbon) produced in deep-inNastic 160+SSNi collisions at about 6 MeV/N bombarding energy. The kinematic analysis of the HI and c~ energies measured as a function of O~ gives strong evidence for a sequential process: the target-like fragments are excited by the deep-inelastic collision and undergo subsequent ~ decay. In contrast, the angular correlations show a pronounced forward peak, indicative of direct or pre-equilibrium c~ emission. The emission time for the latter is estimated to be of the order of 2 x 10 -21 s. To resolve this conflict of co-existing statistical and direct features of the pre-equilibrium emission, the concept of a hot spot is proposed. From the angular correlation and from the e multiplicities, a local temperature of T-~ 3.5 MeV is deduced which agrees well with the temperature derived from the shape of the e spectra. The spot size is estimated to be 1/5 of the sphere.

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Energy and angular correlations between alpha particles and fission-like fragments in the reaction of asCI+Ag at 10MeV/n have been measured. The coincident yield is dominated by two mechanisms: sequential emission from both fragments (M~=0.137 _+0.014) and alpha emission from the composite system prior to scission (M,=0.124 _+0.012). The observation of nuclear shadowing for sequential emission from the fragments allowed us to estimate the "lifetime" of the 218 MeV excited 143Gd composite system as (1-3)x10-2~It is argued that this rather long time reflects the slow evolution in shape of the composite system and might be termed "sticking time," since statistical-model lifetimes are typically an order of magnitude shorter. Observed also are small contributions of nonequilibrium emission in the forward direction (M~=0.005 _+0.001) and a component displaying the characteristics of emission from the neck (M s = 0.010 + 0.002).

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