The proposed project aims at expanding present understanding of nuclear physics by conducting targeted experiments using advanced detection systems and dedicated accelerator facilities. We will use the already acquired knowledge and experience from our previous projects to further improve existing experimental methods and techniques with the aim to collect new high-quality data which are necessary to address specific key open questions in experimental nuclear physics. In particular, we will focus on studies of nucleon-nucleon correlations by using exotic beams, studies of correlations in multi-neutron systems through direct neutron detection, and the search for gamma radiation associated with the oscillations generated by the two-neutron transfer process. Additionally, we will provide new experimental results on isospin analog nuclear molecular states connected with the known structure in 10Be, the highly-deformed configuration of two alpha-clusters sharing two additional neutrons. We will also search for the experimental evidence of cluster structures with three centers, the analogue of the 3-alpha state in 12C, proposed to exist in other light nuclei. Most of the proposed experimental work will be performed at the top international accelerator facilities using state-of-the-art detection systems. In well suited cases, measurements will be performed at the (new) RBI accelerator complex, where the installation of a new scattering chamber will enhance the research capabilities of the RBI facility. The scientists involved in this project have been spokespersons of numerous experiments at international facilities, that resulted in high-quality publications, with considerable international reputation. This project will further strengthen the Croatian community of experimental low- and medium-energy nuclear physics and it will enhance Croatia's presence in the European frame.