| Affiliation: | 1. Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan;2. Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan;1. Key Laboratory of Atomic and Molecular Physics & Functional Material of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;2. Joint Laboratory of Atomic and Molecular Physics, Northwest Normal University and Institute of Modern Physics of Chinese Academy of Sciences, Lanzhou 730070, China |
