Clustering and correlations at the neutron drip-line

Some recent experimental studies of clustering and correlations within very neutron-rich light nuclei are reviewed. In particular, the development of the novel probes of neutron-neutron interferometry and Dalitz-plot analyses is presented through the example of the dissociation of the two-neutron halo system sup 1 sup 4 Be. The utility of high-energy proton radiative capture is illustrated using a study of the sup 6 He(p,gamma) reaction. A new approach to the production and detection of bound neutron clusters is also described, and the observation of events with the characteristics expected for tetraneutrons ( sup 4 n) liberated in the breakup of sup 1 sup 4 Be is discussed. The prospects for future work, including systems beyond the neutron drip-line, are briefly outlined.