Measurement of the electronicgfactor ofH2+

Vibrational spectroscopy ofH2+: Precise evaluation of the Zeeman effect

“…Extending our calculations to the v = 5−6 levels, and assuming the vibrational state populations reported in [11], we find g rot = 0.8688, in disagreement with the experimental value by 1.28 σ.…”

“…This limits the relative accuracy To sum it up, the accuracy of our results is O(α 2 ) ∼ 5×10 spin-dependent charge-exchange techniques [11].…”

“…Loch et al [11] measured the rotational g-factor of H + 2 , averaged over the vibrational levels v = 4 − 6 and the rotational levels L = 1 − 3, to g rot = 0.920(40). Extending our calculations to the v = 5−6 levels, and assuming the vibrational state populations reported in [11], we find g rot = 0.8688, in disagreement with the experimental value by 1.28 σ.…”

Microwave spectroscopy of the high-LH2Rydberg states (ν=0,R=1)n=10G,H,I, andK

“…A third independent line of precision measurement is the recent measurement of the g value of the H2+ ground electronic state using an ion-trap technique [8], which gives a result in agreement with theoretical predictions [9]. These existing measurements by no means exhaust the list of measurable properties of the H2+ ground electronic state.…”

“…The available precise measurements fall into three classes. The earliest were the determination of hyperfine-structure constants of H2+ in vibrationally excited states (v=4, 5,6,7,8), which were carried out by Jefferts using an ion-trap technique [2]. These measurements were partially motivated by the (so far unsuccessful) hope of detecting interstellar H2+ by observing the characteristic radio-frequency emissions from its ground-state hyperfine structure.…”