The Zeeman tuning of the A 6Σ+–X 6Σ+ transition of chromium monohydride

Jinhai Chen; Joost M. Bakker; Achim Peters; Michael Stoll; Gerard Meijer; Timothy C. Steimle

doi:10.1039/B614927H

The Zeeman tuning of the A ⁶Σ⁺–X ⁶Σ⁺ transition of chromium monohydride†

Jinhai Chen,^a Joost M. Bakker,^bc Achim Peters,^b Michael Stoll,^c Gerard Meijer^c and Timothy C. Steimle^a

Author affiliations

^a Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, USA
E-mail: tsteimle@asu.edu

^b Humboldt Universität zu Berlin, Institut für Physik, Hausvogteiplatz 5-7, Berlin, Germany

^c Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, Berlin, Germany

Abstract

The magnetic tuning of the low-rotational levels of the A ⁶Σ⁺ (v = 1 and 0) states of chromium monohydride, ⁵²CrH, have been experimentally investigated using optical spectroscopy of the (0, 0) and (1, 0) bands of the A ⁶Σ⁺–X ⁶Σ⁺ transition. The tuning of the numerous low-rotational lines in the A ⁶Σ⁺–X ⁶Σ⁺ (0, 0) band can be accurately modeled using a single set of g-factors (g_S and g) which are close to the expected values. In contrast, the g-factors for the A ⁶Σ⁺ (v = 1) state required to model the magnetic tuning of low-rotational lines in the A ⁶Σ⁺–X ⁶Σ⁺ (1, 0) band are strongly dependent upon rotational and fine structure component and the determined effective values for g_S deviate significantly from 2.002. Interpretation of the quantum level variation of g_S is presented. The magnetic hyperfine structure of the (0, 0) and (1, 0) bands of the A ⁶Σ⁺–X ⁶Σ⁺ transition is analyzed to produce proton Fermi contact, b_F and dipolar, c, magnetic hyperfine parameters of 19(1) MHz and 34(5) MHz for the A ⁶Σ⁺ (v = 0) state and 21(2) MHz and 30(7) MHz for the A ⁶Σ⁺ (v = 1) state.

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Article information

DOI: https://doi.org/10.1039/B614927H
Article type: Paper
Submitted: 13 Oct 2006
Accepted: 07 Dec 2006
First published: 12 Jan 2007

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Phys. Chem. Chem. Phys., 2007,9, 949-957

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The Zeeman tuning of the A ⁶Σ⁺–X ⁶Σ⁺ transition of chromium monohydride

J. Chen, J. M. Bakker, A. Peters, M. Stoll, G. Meijer and T. C. Steimle, Phys. Chem. Chem. Phys., 2007, 9, 949 DOI: 10.1039/B614927H

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