Low density systems (atoms, molecules and clusters)
Research in “low density matter” focuses on spectroscopy and dynamics of atoms, molecules and clusters, as well as on radiation-matter interaction. Investigations aim at acquiring information on electronic structure, reactivity and chemical-physical behavior of target systems used in different areas of basic and applied research: biology, astrophysics, environment and cultural heritage. They are also the basis for the modeling of atmosferic chemistry, interstellar space and biochemistry. Special attention is devoted to the development of new methodologies, both theoretical and experimental, and of new instrumentation for the investigation of low density systems.
Several classes of elementary processes under investigation:
1. Single / multiple ionization, molecular fragmentation by electron / ion impact and photoionization with synchrotron, laser and FEL radiation.
2. Elementary ionization processes relevant to biological radiation damage.
3. Excitation and ionization of targets of increasing complexity (such as building block molecules of functional materials, clusters and nanoparticles of metals), in seach of correlations within electronic, structural and chemical properties, and functional characteristics of materials of which they are the precursors.
4. Elementary ionic reactions for modeling of cold plasma of astrochemical interest.