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New Observation of Na2 43Σ+g State by Pulsed Perturbation Facilitated Optical-Optical Double Resonance Spectroscopy
Zheng Chen,Cheng-zhe Cui,Yao-ming Liu,Li Li* ,V. B. Sovkov,V. S. Ivanov
Author NameAffiliation
Zheng Chen Department of Physics and Key Laboratory of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China 
Cheng-zhe Cui Department of Physics and Key Laboratory of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China 
Yao-ming Liu Department of Physics and Key Laboratory of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China 
Li Li* Department of Physics and Key Laboratory of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China 
V. B. Sovkov V. A. Fock Institute of Physics, St.Pertersburg State University,Petrodvorets, St. Petersburg 198504, Russia 
V. S. Ivanov V. A. Fock Institute of Physics, St.Pertersburg State University,Petrodvorets, St. Petersburg 198504, Russia 
Abstract:
Sixty-five new vibronic levels of the Na2 43Σ+g state have been observed in the 33900-35200 cm-1 energy region above the potential minimum of the ground state by pulsed perturbation facilitated optical-optical double resonance (PFOODR) fluorescence excitation spectroscopy. These new data fill the gap between the low-v levels mainly observed by continuous wave (CW) PFOODR spectroscopy and the high-v levels above the 3s+3d limit observed by pulsed PFOODR with predissociation detection. Molecular constants are fitted below potential shelf around the 3s+3d atomic limit with previously published data (mainly observed by CW PFOODR) and these new data. RKR potential curve has been calculated with the new constants. The constants are: Te = 32127:090 cm-1, we = 121:4099(0:20720) cm-1, Be = 0:116287(0:0002300) cm-1, Re =3:551 ?. An error of the RKR potential curve of J. Chem. Phys. 108, 7707 (1998) is corrected.
Key words:  Triplet states, PFOODR, 43Σ+g state, 43Σ+g state, Rydberg states
FundProject:
脉冲激光微扰增强双共振光谱对钠分子43∑g+态的新实验观测
陈峥,崔成哲,刘耀明,李丽* ,V.B.索夫科夫,V.S.依万诺夫
摘要:
用微扰增强双共振对钠分子43∑g+态33900~35200 cm-1的65个振转能级进行了实验观测.以往用连续激光双共振方法只看到低振动能级,用脉冲激光双共振和检测解离产物的方法只观测到高振动能级.获得的新数据填补了以往数据的空缺.综合v=0~31能级所有数据,拟合出一套分子常数,计算出RKR势能曲线.主要分子常数为:Te=32127.090 cm-1,ωe=121.1099(0.20720)cm-1,Be=0.116287(0.0002300)cm-1,Re=3.551 A.还对J.Chem.Phys.108,7707(1998)中RKR势能曲线的一个错误进行了纠正.
关键词:  Na2  三线态  PFOODR  43∑g+态  33∑g+态  Rydberg态
DOI:10.1360/cjcp2006.19(1).11.4
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