Abstract
Laser driven transitions from the metastable a 3Σ+u state to the predissociating level v′=4 of the electronic state c 3Σ+g of He2 are investigated by fast beam laser spectroscopy. For transitions to the rotational levels N′=8, 10, and 12 of the c 3Σ+g state, the fine structure is resolved and the fine structure parameters of both electronic states can be determined. The fine structure in the rotational levels N″=7, 9, and 11 of v″=0 in the a 3Σ+u state is measured to 20 kHz precision (3σ) using laser–radio frequency double-resonance spectroscopy. These measurements are complementary to the previous radio frequency (rf) measurements for the levels N″=1, 3, and 5 by Lichten et al. The fine structure parameters are compared to theoretical calculations and simple models for the electronic interactions and the couplings between different electronic states.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
