Work

Landé factors for selected levels of the e 6 Π and a 6 Δ states of FeH

Year: 2026

Type: article

Abstract: We investigate the Zeeman effect in the 0-0 band of the e 6 Π –a 6 Δ system of FeH, producing the molecule at near-ambient temperatures and recording Doppler-limited laser excitation spectra, using selective detection. We provide a set of effective Landé factors for the three lowest spin components of both states, extracted from the analysis of partially-resolved Zeeman patterns seen in magnetic flux denisities of 0.4 –0.7 T. Landé factors in the upper state show strong variations with parity, unlike the lower state level, which is close to having a single electronic configuration. Landé factors for two Fe(I) lines at 18611.635 cm − 1 and 19573.056 cm − 1 , recorded for magnetic flux density calibration, have been refined in the process.

Source: Journal of Molecular Spectroscopy

DOI: 10.1016/j.jms.2026.112081

Authors: A.J. Ross, P. Crozet, A.G. Adam, T.E. Blackmore, D.W. Tokaryk

Institutions: Lyon 1 Université, Centre National de la Recherche Scientifique, Institut Lumière Matière, University of New Brunswick

Language: English

Topic: Molecular Spectroscopy and Structure

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,310

Funders: Centre National d’Etudes Spatiales, Canadian Electricity Association, Natural Sciences and Engineering Research Council of Canada