In accordance with the JAERI-KEK joint radioactive nuclear beam (RNB) project, we have installed a forced electron beam induced arc discharge (FEBIAD) type integrated-target-ion source in the JAERI-ISOL to produce heavy neutron-rich RNBs with particle-induced fission of 2 3 8 U. In the present ion source, a 2.6-g 2 3 8 UC 2 target is directly attached to a plasma chamber. RNBs of 8 Li, 1 8 F and 2 0 F are also planned to be used for the study of thermal diffusion in materials in the joint project. Release profiles of 7 Li have been studied using a cavity type thermal ion source. For mass-separation of F atoms, the molecular ion formations have been examined using the FEBIAD ion source.