Chinese Science Bulletin     2009 54 (3):  358-363    ISSN: 1001-6538:  CN: 11-1785/N Coexistence of normal, super-, and hyper-deformation in nuclei: A study with angular momentum projection method SUN Yang1,2, ZHANG JingYe3, LONG GuiLu4,5 &|WU ChengLi6,7 1 Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China;  2 Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556, USA;  3 Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA;  4 Department of Physics, Tsinghua University, Beijing 100084, China;  5 Center of Nuclear Theory, Lanzhou National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China;  6 Department of Physics, Xiamen University, Xiamen 361005, China;  7 Department of Physics, Chung Yuan Christian University, Chung-Li, Taiwan 32023, China Received 2008-08-07  Revised 2008-10-22  Online 2009-02-10 Reference  null Corresponding author: SUN Yang email: sunyang@sjtu.edu.cn