With the recent commissioning of a gas-filled recoil separator at Institute of Modern Physics (IMP) in Lanzhou,the decay properties of 271Ds (Z =110) were studied via the 20sPb(64Ni,n) reaction at a beam energy of 313...With the recent commissioning of a gas-filled recoil separator at Institute of Modern Physics (IMP) in Lanzhou,the decay properties of 271Ds (Z =110) were studied via the 20sPb(64Ni,n) reaction at a beam energy of 313.3 MeV.Based on the separator coupled with a position sensitive silicon strip detector,we carried out the energy-position-time correlation measurements for the implanted nucleus and its subsequent decay α's.One α-decay chain for 271Ds was established.The α energy and decay time of the 27iDs nucleus were measured to be 10.644 MeV and 96.8ms,which are consistent with the values reported in the literature.展开更多
The excitation functions of two very similar reaction channels, 58Fe＋ 208pb→ 265Hs ＋ 1n and 58Fe＋ 209Bi → 266Mt ＋1n are studied in the framework of the dinuclear system conception. The fusion probabilities are f...The excitation functions of two very similar reaction channels, 58Fe＋ 208pb→ 265Hs ＋ 1n and 58Fe＋ 209Bi → 266Mt ＋1n are studied in the framework of the dinuclear system conception. The fusion probabilities are found to be strongly subject to the structure of the driving potential. Usually the fusion probability is hindered by a barrier from the injection channel towards the compound nuclear configuration. The barrier towards the mass symmetrical direction, however, also plays an important role for the fusion probability, because the barrier hinders the quasi-fission, and therefore helps fusion.展开更多
基金Supported by the National Basic Research Program of China under Grant No 2007CB815001the National Natural Science Foundation of China under Grant Nos 10875152,11005128,10975064 and 10979066+2 种基金the National Natural Science Funds for Distinguished Young Scholars under Grant Nos 10825522 and 10925526Projects of International Cooperation and Exchanges NSFC No 11120101005the Knowledge Innovation Project of Chinese Academy of Sciences(KJCX2-EW-N01).
文摘With the recent commissioning of a gas-filled recoil separator at Institute of Modern Physics (IMP) in Lanzhou,the decay properties of 271Ds (Z =110) were studied via the 20sPb(64Ni,n) reaction at a beam energy of 313.3 MeV.Based on the separator coupled with a position sensitive silicon strip detector,we carried out the energy-position-time correlation measurements for the implanted nucleus and its subsequent decay α's.One α-decay chain for 271Ds was established.The α energy and decay time of the 27iDs nucleus were measured to be 10.644 MeV and 96.8ms,which are consistent with the values reported in the literature.
基金the financial support from the National Key R&D Program of China (grant nos. 2022YFA1403201)the National Natural Science Foundation of China (grant no. 12125404, 11974162+1 种基金11834006)the Fundamental Research Funds for the Central Universities
基金The project supported by National Natural Science Foundation of China under Grant Nos. 10505016, 10235020, and 10235030, the Knowledge Innovation Project of the Chinese Academy of Sciences under Grant Nos. KJCX2-SW-N17 and KJCX-SYW-N2, the Natural Science Foundation of Guangdong Province under Grant No. 04300874, Major State Basic Research Development Program under Grant No. 2007CB815000 and the Financial Support from DFG of Germany
文摘The excitation functions of two very similar reaction channels, 58Fe＋ 208pb→ 265Hs ＋ 1n and 58Fe＋ 209Bi → 266Mt ＋1n are studied in the framework of the dinuclear system conception. The fusion probabilities are found to be strongly subject to the structure of the driving potential. Usually the fusion probability is hindered by a barrier from the injection channel towards the compound nuclear configuration. The barrier towards the mass symmetrical direction, however, also plays an important role for the fusion probability, because the barrier hinders the quasi-fission, and therefore helps fusion.
基金Supported by National Natural Science Foundation of China （10635080, 10675148） and Knowledge Innovation Project of Chinese Academy of Sciences （KJCX2-SW-No18, CXTD-J2005-1） The authors acknowledge the collaborators from domestic and foreign institutes or universities for their helpful discussions and advices. They are IHEP, USTC, Tsinghua Univ., Peking Univ., Nan- jing Univ., ITP, CCNU, SINAP, CIAE, Lanzhou Univ., and Duke Uinv., C0SY@ Jiilich.
