The acceleration of radioactive beams is a new and attractive field in nuclear physics. One of the most intense sources of very neutron-rich radioactive isotopes can be obtained by fission in a special uranium target close to the core of a research reactor. Two such installations are being planned: the PIAFE project in Grenoble and a similar facility at the new Munich research reactor FRM II. Accelerated fission fragments will facilitate the production of the heaviest elements by fusion and the investigation of nuclear structure and nuclear reactions for astrophysical purposes. This book...