AI Article Synopsis
- Researchers investigated the visible spectrum of H3(+) using advanced spectroscopy techniques in a low-temperature trap to achieve high sensitivity.
- They successfully measured weak ro-vibrational transitions from the lowest rotational states to higher excitation levels, allowing them to determine visible line intensities and corresponding Einstein B coefficients.
- Predictions for the Einstein B coefficients, derived from a highly accurate dipole moment surface of H3(+), showed excellent agreement with experimental results, even in areas identified as chaotic.
Article Abstract
The visible spectrum of H3(+) is studied using high-sensitivity action spectroscopy in a cryogenic radiofrequency multipole trap. Advances are made to measure the weak ro-vibrational transitions from the lowest rotational states of H3(+) up to high excitation energies providing visible line intensities and, after normalisation to an infrared calibration line, the corresponding Einstein B coefficients. Ab initio predictions for the Einstein B coefficients are obtained from a highly precise dipole moment surface of H3(+) and found to be in excellent agreement, even in the region where states have been classified as chaotic.
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| http://dx.doi.org/10.1063/1.4904440 | DOI Listing |
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