Institute of Physics College of Chemical Engineering Sichuan University Chengdu 610065 China;
Institute of Theoretical Physics Xihua Normal University Nanchong 637002 China;
Institute of Physics College of Chemical Engineering Sichuan University Chengdu 610065 China;
Department of Physics China Oceanography University Qingdao 266003 China;
College of Physics Sichuan University Chengdu 610065 China;
vibrational energy; dissociation energy; nitrogen molecule; algebraic method;