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 Title: High Resolution Laser Induced Fluorescence And Zeeman Effect In The [18.6]1.5-x2Σ+ Transition Of Yboh Author(s): Linton, Colan Contributor(s): Le, Anh T.; Adam, Allan G.; Mengesha, Ephriem Tadesse; Steimle, Timothy Subject(s): Small molecules Abstract: We report here on the high resolution ($\sim$30 MHz FWHM) laser induced fluorescence spectrum of an electronic transition of YbOH observed in the 18500 - 18600 \wn region. The YbOH was produced in a supercooled molecular beam by the reaction of laser ablated Yb with methanol. Because of the large number of Yb isotopes, the rotational structure, though well resolved, was very dense. The rotational structure of three of the isotopologues, $^{172}$YbOH, $^{174}$YbOH and $^{176}$YbOH was identified and assigned. The rotational analysis showed that the transition was from an excited $\Omega$ = 3/2 state, labelled [18.6]1.5, to the ground X$^{2}$$\Sigma$$^{+}$ state and having an origin of 18577.5 \wn. In order to try and determine the nature of the $\Omega$ = 3/2 state (possibly A$^{2}$$\Pi$$_{3/2}$?), external magnetic fields were applied and the resulting Zeeman spectra assigned and analyzed. The previous analysis\footnote{T.C. Melville and J.A. Coxon, J. Chem. Phys. 115, 6974 (2001)} of a high temperature source assigned a state near 18677 \wn as A$^{2}$$\Pi$$_{3/2}$. The results of the analysis will be presented and their interpretation discussed. Issue Date: 2021-06-25 Publisher: International Symposium on Molecular Spectroscopy Genre: Conference Paper / Presentation Type: Text Language: English URI: http://hdl.handle.net/2142/111408 Date Available in IDEALS: 2021-09-24
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