We explore the role of intrinsic and collective modes in the evaporation spectra of particles emitted by a compound nucleus. Collective effects are found to determine the gross features of the spectra, dramatically distorting the exit channel phase space of the free particle. We are also trying to determine whether the spectra retain information on the preformation of the particle inside the compound nucleus. Alpha particle evaporation spectra are analyzed and interesting modulations at the level of 1% are observed.
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