Pre-emission of correlated neutrons fromLi halo nuclei

An experiment with a new array detector aiming the investigation of halo neutron pair pre-emission in Si(11Li, fusion) has been performed. New approaches for testing the true n-n coincidences against cross-talk have been worked out. Experimental evidence for residual correlation of the pre-emitted halo neutrons was found. The results obtained in building the nn correlation functions by using the available denominators are discussed. An experiment for getting the intrinsic n-n correlation function is proposed.