The Lamb-dip spectrum of phosphine: The nuclear hyperfine structure due to hydrogen and phosphorus |
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Authors: | Gabriele Cazzoli Cristina Puzzarini |
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Institution: | Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy |
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Abstract: | For the first time, the hyperfine structure of the rotational J = 1 ← 0 (K = 0) and J = 2 ← 1 (K = 0, 1) transitions of phosphine has been resolved by using microwave spectroscopy. To this purpose, the Lamb-dip technique has been employed. In addition, the J = 3 ← 2 (K = 0, 1, 2) transition has been recorded at Doppler resolution. The present investigation allowed us to provide accurate values for most of the hyperfine constants as well as ground state rotational parameters. |
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Keywords: | Lamb-dip spectroscopy Rotational spectrum Hyperfine structure Phosphine |
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