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~(252)Cf is considered as a so-called radionuclide generator which has a spontaneous fission(SF)branch of 3.11% and a half-life of 2.645 a.The asymmetric fission of ~(252)Cf leads to two peaks in the mass distri- bution ranging from A= 95～120 and A=130～155,respectively,corresponding to neutron-rich isotopes of elements in the regions of strontium(Sr)to palladium(Pd)and tin(Sn)to neodymium(Nd).In order to prepare the model experiment for the chemistry of transactinides and test On-Line Gas chemistry Appa- ratus(OLGA)with the isotopes of group-4 and group-5 of the periodic table,the required niobium(Nb)
~ (252) Cf is considered as a so-called radionuclide generator which has a spontaneous fission (SF) branch of 3.11% and a half-life of 2.645 a the asymmetric fission of ~ (252) Cf leads to two peaks in the Mass distri- bution ranging from A = 95-120 and A = 130-155, respectively, corresponding to neutron-rich isotopes of elements in the regions of strontium (Sr) to palladium (Pd) and tin (Sn) to neodymium In order to prepare the model experiment for the chemistry of transactinides and test On-Line Gas chemistry Appa- ratus (OLGA) with the isotopes of group-4 and group-5 of the periodic table, the required niobium (Nb)