The fundamental rotational interval of para-H2+ by MQDT-assisted Rydberg spectroscopy of H2

Open access
Date
2015-02-14Type
- Journal Article
Abstract
Transitions from selected nd Rydberg states of H2 to n′p/f Rydberg series converging on the lowest two (N+ = 0 and 2) rotational levels of the X+ 2Σ+g (v+ = 0) ground state of para-H+2 have been measured in the range 1-7.4 THz using a laser-based, pulsed, narrow-band source of submillimeter-wave radiation. The analysis of the spectra by multichannel quantum-defect theory (MQDT) has allowed a complete interpretation of the fine structures of the Rydberg series and their dependence on the principal quantum number. The extrapolation of the series to their limits with MQDT has enabled the determination of the first rotational interval of para-H+2, which is 174.236 71(7) cm−1 (5 223 485.1(2.3) MHz). Show more
Permanent link
https://doi.org/10.3929/ethz-b-000099520Publication status
publishedExternal links
Journal / series
The Journal of Chemical PhysicsVolume
Pages / Article No.
Publisher
American Institute of PhysicsOrganisational unit
03449 - Merkt, Frédéric / Merkt, Frédéric
Funding
146759 - Rydberg states, VUV laser spectroscopy and photoionization dynamics (SNF)
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