Title: | THE PURE ROTATIONAL SPECTRUM OF THE SiP RADICAL (X2Πi) |
Author(s): | Burton, Mark |
Contributor(s): | Ziurys, Lucy M.; Sheridan, Phillip M. |
Subject(s): | Astronomy |
Abstract: | The millimeter-wave spectrum of the SiP radical in its X$^{2}$$\Pi$$_{i}$ ground electronic state has been recorded using direct absorption spectroscopy in the frequency range 151 – 532 GHz. The species was synthesized in an AC discharge by the reaction of SiH$_{4}$ and red phosphorous, in argon carrier gas. Both lambda-doubling and hyperfine splittings, from the phosphorus nuclear spin (\textit{I} = 1/2), were observed in both spin-orbit ladders, $\Omega$ = 3/2 and 1/2. The $\Omega$ =1/2 ladder appears to be perturbed, presumably by the nearby A$^{2}$$\Sigma$ state, as suggested by previous optical data. The data were analyzed with a Hund’s case (a) Hamiltonian, establishing global spectroscopic constants. A deperturbation analysis was also conducted, further refining the $\Pi$-$\Sigma$ interaction. |
Issue Date: | 23-Jun-20 |
Publisher: | International Symposium on Molecular Spectroscopy |
Citation Info: | APS |
Genre: | CONFERENCE PAPER/PRESENTATION |
Type: | Text |
Language: | English |
URI: | http://hdl.handle.net/2142/107530 |
Date Available in IDEALS: | 2020-06-26 |