An electronic spectroscopic study of a molecular beam sample of YbOH

Steimle, Timothy

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https://hdl.handle.net/2142/100667 Copy

Description

Title

An electronic spectroscopic study of a molecular beam sample of YbOH

Author(s)

Steimle, Timothy

Contributor(s)

• Hutzler, Nicholas R
• Pilgram, Nickolas

Issue Date

2018-06-20

Keyword(s)

Metal containing

Abstract

Ytterbium monofluoride, YbF, has long been used as a venue in attempts to measure the electron electric dipole moment (eEDM)bc . In addition to the molecular EDM resulting from the eEDM contribution, the 173Yb(16.1%, I=5/2) isotopic form of Yb-containing molecules are also expected to have an EDM caused by an interaction of a nuclear magnetic quadrupole moment (NMQM)d with the electrons. As pointed out by Kozyryev and Hutzlere , certain energy levels of Ybpolyatomic molecules (e.g. YbOH, YbCCH, YbCH3, and YbOCH3) are expected to exhibit enhanced sensitivity for EDM measurements, relative to YbF, largely due to their ease of polarization. The properties of such molecules are poorly characterized. Here we report on our initial molecular beam studies of the knownf A 2Π1/2(000) - X2Σ +(000) transition of YbOH. The high-resolution ( 30 MHz) laser induced fluorescence (LIF) spectrum in the 17320 cm−1 to 17326 cm−1 range was recorded both field-free and in the presence of a static electric field. Stark spectra were analyzed to determine the molecular frame permanent electric dipole moments, µel, for the A2Π1/2 and X2Σ + states. The dispersed fluorescence resulting from the excitation of rotationally resolved branch features has been analyzed to produce fluorescence branching ratios. Implications for planned EDM measurements will be presented.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100667

DOI

10.15278/isms.2018.WF04

Copyright and License Information

Copyright 2018 Timothy Steimle

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