推广的液滴模型及其应用简介.ppt

推广的液滴模型及其应用简介;内 容; 采用改进的宏观模型定量描述： 1 原子核质量（结合能）与形变 2 alpha衰变 3 质子放射性 4 集团放射性 5 自发裂变 6 诱发裂变 7 各种衰变模型竞争，较好确定原子核寿命 8 熔合反应;自发裂变与阿尔法衰变的竞争;Phys. Rev. Lett. 104, 142502 (2010);;Confirm the odd-even effect is very important for determination of the decay mode.;An experimental indication that Z=114 shell closure predicted around N=184. ;二 模型简介;The improvements were made for the conventional liquid drop model;(b) Proximity energy;(c) Shell correction energy;(d) Pairing energy;(2) Half-life;三 模型应用;;1 阿尔法衰变;;;; Alpha decay process;In the framework of cluster-like mode (Zhang and Royer, PRC 77, (2008), 054318);The penetration probability plays the most important role to determine the life-time of alpha decay.;Clearly the closed shell structures play the key role for the preformation mechanism, and more the nucleon number is close to the magic nucleon numbers, the more the preformation of alpha cluster is difficult inside the mother nucleus. ;In the framework of fission-like mode (Wang,Zhang, Zuo and Li, CPL 27, (2010), 062103);An approach to deal with the assault frequency Zhang,Royer and Li, PRC 84 (2011) 027303;The alpha decay process is rather a radioactivity emission process of a cluster preformed on the surface of the nucleus but before the potential penetration. ; Alpha decay properties of SHN;One proton separation energies and alpha decay energies of 162 isotones and 184 isotones.;Potential energy surface of 270Hs and 298114 by Constrained Relativistic Mean Field theory with the parameters NL3;Alpha decay life-times of Hs and Z=114 isotopes with WKB penetration probability, and the potential barrier is constructed by the GLDM.;3 Cluster radioactivity;;;;4 自发裂变;Comparison between theoretical (t) and experimental (e) barrier characteristics for actinide nuclei. Ea, Eb and Ec are the first, second and third peak heights while E2 and E3 are the energies of the