New hyperfine-resolved measurements of the fundamental vibrational band and the N=2←1 rotational transition of OH+ (X 3Σ−) yield improved spectroscopic constants via global fit.
At higher rotational frequencies, such as the 2 THz regime applied in this work, the rotational photon alone carries enough energy to eject the ions from the trap
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Hyperfine-Resolved Rovibrational and Rotational Spectroscopy of OH$^+$ ($X ^3\Sigma^-$)
New hyperfine-resolved measurements of the fundamental vibrational band and the N=2←1 rotational transition of OH+ (X 3Σ−) yield improved spectroscopic constants via global fit.