中能重离子反应类熔合核厚靶产额与超重元素合成

We have been consanguineously following up the international activities and progresses on the research field for superheavy elements during the term of the present subject. We put our attentions to collect and analyze the information on the newest development on the field of superheavy research, and devoted our effort to explore a physical and technical path, which could lead to synthesize and identify some new nuclides on the superheavy-element region by using the experimental conditions available in the present Chinese laboratories. Now, we have suggested such a primary project in order to realize this aim which has been reported for many times at different occasions, for example in "The suggestion report for opening an emphases project on superheavy research" which was submitted to NNSF, or on the workshop about superheavy research as well as on the relative series. All the works would play a positive and active role for establishing the emphases project for superheavy research as well as for openning some new ideas on superheavy research.on the other hand we continued the studies on the thick-target yields induced in bombardment of heavy-element thick targets by intermediate energy heavy ions. The measurement for the yields was expanded from the nuclei below target to that upper target. We made deeply analyzing for the exist experimental results for thick-target yields obtained for the products below target and some valuable conclusions were derived. Besides, the investigation for the nuclear level construction of the nucleus 208Tl, which should be very important for nuclear shell mode, has been finally finished, and obtained a good comments from the referee of the journal Eur. Phys. A.

中能O-18、Ar-40及Kr-86等重离子束轰击Lu-175、Pb-208及U-238厚靶。在线同位素分离器闹柿恐付掀嗳壬椎腪鉴别。常规衰变探测辅以注入焦平面上位置灵敏探测器的级联α衰变分析。以获得平均生成截面的几nb以上，半寿命长于1s的全熔合及类熔合蒸发余核的厚靶产额分布。探索超重元素可能的新合成方式和鉴别途径。尝试鉴别已知超重元素新同位素。