Wien filter using in exploring on low-energy radioactive nuclei

The possibility of using the Wien filter as a mass separator for the neutron enriched nuclei study is under discussion. The nuclei are produced as a result of sup 2 sup 3 sup 8 U fission within the frame of the 'DRIBs' project. The main ion-optics characteristics of the Wien filter are obtained using the moment method. Parameter optimization has been fulfilled to obtain the maximum resolution. The ion beam dynamics and heavy ion separation have been illustrated using the macroparticle simulation for the chosen optimal filter parameter. It is shown that the resolution can be obtained on the level higher than 10 sup 2. It provides an effective separation of the fission fragments with the high atomic number