A Theoretical Study on the Excited States of the KCCH Radical Haifeng Zhang, Jiubo Cui, Xiaodong Zhao, Yunfei Wu, Weiwei Pei and Xuetong Zhu E3S Web Conf., 165 (2020) 05030 Published online: 01 May 2020 DOI: 10.1051/e3sconf/202016505030