摘要
利用同步辐射和多级光电离吸收池,在14—20eV(890—620)范围内测量了CO绝对光吸收谱,得到了CO离子态的电离能.根据CO绝对光吸收谱,结合理论计算,分别识别了收敛到CO+三个电子态(Χ2Σ+,Α2Π和B2Σ+)的Rydberg系列.不仅扩充了前人识别的Rydberg系列和振动序列,而且探索性地识别了收敛到CO+基态X2Σ+(ν+=2和3)的Rydberg系列Rx-Ⅰ,和收敛到CO+(Α2Π)电子态的量子数n=2(真实值等于3)的振动序列.与此同时,本文也深入讨论了17.0—17.5eV(730—710)范围内CO吸收光谱的特征.
Absolute photoabsorption spectrum of CO molecule in the region 14—20 eV（620—890 ） is measured using synchrotron radiation and multi-stage photoionization chamber, and its ionization energy is obtained. According to the absorption spectrum of CO and theoretical calculation, the Rydberg series converging to the Χ2Σ＋, Α2Π, and B2Σ＋ states of CO＋ are assigned separately. Rydberg series assigned before are extended, Rydberg series converging to the Χ2Σ＋ （ν＋=2 and 3） of CO＋, and n=2 （the real value of n is 3） progressions of the series converging to the Α2Π state of CO＋ are identified. At the same time, the absorption spectrum of CO in the region 17.0—17.5 eV （710—730 ） is also discussed deeply.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第9期248-256,共9页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10874167,10875126)
中科院知识创新工程重大创新项目(批准号:KJCX2-YW-N07)资助的课题~~
关键词
同步辐射
多级光电离吸收池
RYDBERG系列
振动序列
synchrotron radiation
multi-stage photoionization chamber
Rydberg series
vibration progressions
