International bulletin on atomic and molecular data for fusion. No. 26

This bulletin deals with atomic and molecular data for fusion. A bibliography for the most recent relevant data, presented in the document, is provided. Work in progress is also reported briefly, in the form of short reports of research groups in different laboratories, on such topics as: electron-ion, ion-ion and ion-atom processes (Giessen), ion-atom collisions (London), charge-exchange process theory and nuclear reactions relevant to fusion (Durham), evaluation of electron-impact excitation cross sections of ions (Tokyo), collisions between multicharged ions and atoms (Aarhus), Li-beam diagnostics of plasmas (Wien), collection and dissemination of A+M data for fusion (Moscow), electron capture processes of iodine ions (Nagoya), and fusion oriented work (Oak Ridge)