对\(^{4}He_{2}^{+}\)（\(X ^{2}Σ_{u}^{+}\)）振转间隔的非绝热、相对论和主导阶量子电动力学修正
Nonadiabatic, Relativistic, and Leading-Order QED Corrections for Rovibrational Intervals of ^{4}He_{2}^{+} (X ^{2}Σ_{u}^{+}).
作者信息
Ferenc Dávid, Korobov Vladimir I, Mátyus Edit
机构信息
Institute of Chemistry, ELTE, Eötvös Loránd University, Pázmány Péter sétány 1/A, Budapest H-1117, Hungary.
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia.
出版信息
Phys Rev Lett. 2020 Nov 20;125(21):213001. doi: 10.1103/PhysRevLett.125.213001.
The rovibrational intervals of the ^{4}He_{2}^{+} molecular ion in its X ^{2}Σ_{u}^{+} ground electronic state are computed by including the nonadiabatic, relativistic, and leading-order quantum-electrodynamics corrections. Good agreement of theory and experiment is observed for the rotational excitation series of the vibrational ground state and the fundamental vibration. The lowest-energy rotational interval is computed to be 70.937 69(10) cm^{-1} in agreement with the most recently reported experimental value, 70.937 589(23)(60)_{sys} cm^{-1} [L. Semeria et al., Phys. Rev. Lett. 124, 213001 (2020)PRLTAO0031-900710.1103/PhysRevLett.124.213001].
通过纳入非绝热、相对论和一级量子电动力学修正，计算了处于X ^{2}Σ_{u}^{+}基电子态的^{4}He_{2}^{+}分子离子的振转间隔。对于振动基态和基频振动的转动激发系列，理论与实验结果吻合良好。计算得出最低能量的转动间隔为70.937 69(10) cm^{-1}，与最近报道的实验值70.937 589(23)(60)_{sys} cm^{-1} [L. 塞梅里亚等人，《物理评论快报》124, 213001 (2020)PRLTAO0031 - 900710.1103/PhysRevLett.124.213001] 一致。
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