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Spectroscopic parameters of phosphine, PH3, in its ground vibrational state

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arxiv 1305.1138 v1 pith:LALEQRGI submitted 2013-05-06 astro-ph.EP astro-ph.GAphysics.atm-clus

classification astro-ph.EPastro-ph.GAphysics.atm-clus
keywords deltabeendataparameterstransitionsgroundhyperfinerotational
verification ladder T0 review T1 audit T2 compute T3 formal
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The ground state rotational spectrum of PH3 has been reanalyzed taking into account recently published very accurate data from sub-Doppler and conventional absorption spectroscopy measurements as well as previous data from the radio-frequency to the far-infrared regions. These data include Delta(J) = Delta(K) = 0 transitions between A1 and A2 levels, Delta(J) = 0, Delta(K) = 3 transitions as well as regular Delta(J) = 1, Delta(K) = 0 rotational transitions. Hyperfine splitting caused by the 31P and 1H nuclei has been considered, and the treatment of the A1/A2 splitting has been discussed briefly. Improved spectroscopic parameters have been obtained. Interestingly, the most pronounced effects occured for the hyperfine parameters.

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  1. Submillimeter-wave spectroscopy of the CH$_3$O radical

    astro-ph.GA 2024-12 conditional novelty 6.0 of 10

    New submillimeter measurements of CH3O up to 860 GHz improve the fitted rotational constants and enable more reliable spectral prediction for interstellar detection.

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