Electronic ground state of Ni 2

The Φ 9 / 2 4 ground state of the Ni 2 + diatomic molecular cation is determined experimentally from temperature and magnetic-field-dependent x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap, where an electronic and rotational temperature of 7.4 ± 0.2 K was reached by buffer ga...

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Bibliographic Details
Published in:The Journal of chemical physics 2016-11, Vol.145 (19), p.194302
Main Authors: Zamudio-Bayer, V., Lindblad, R., Bülow, C., Leistner, G., Terasaki, A., v. Issendorff, B., Lau, J. T.
Format: Article
Language:English
Subjects:
Chemical Sciences
Fysikalisk kemi
Kemi
Natural Sciences
Naturvetenskap
Physical Chemistry
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Summary:The Φ 9 / 2 4 ground state of the Ni 2 + diatomic molecular cation is determined experimentally from temperature and magnetic-field-dependent x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap, where an electronic and rotational temperature of 7.4 ± 0.2 K was reached by buffer gas cooling of the molecular ion. The contribution of the spin dipole operator to the x-ray magnetic circular dichroism spin sum rule amounts to 7 T z = 0.17 ± 0.06 μ B per atom, approximately 11% of the spin magnetic moment. We find that, in general, homonuclear diatomic molecular cations of 3d transition metals seem to adopt maximum spin magnetic moments in their electronic ground states.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.4967821