摘要
The heavy elements are produced via the bombardment of actinide targets by using low energy heavyion beams. The natural uranium and thorium always exist with lead and bismuth, large amounts of transfer reaction products such as Rn and Po produced from the impurities of lead or bismuth when irradiated with heavy-ion beam. It strongly disturbed the identification of the transactinide elements. Therefore,
The heavy elements are produced via the bombardment of actinide targets by using low energy heavyion beams. The natural uranium and thorium always exist with lead and bismuth, large amounts of transfer reaction products such as Rn and Po produced from the impurities of lead or bismuth when irradiated with heavy-ion beam. It strongly disturbed the identification of the transactinide elements. Therefore,
