A comparative study of troilite in bulk ordinary chondrites Farmington L5, Tsarev L5 and Chelyabinsk LL5 using Mössbauer spectroscopy with a high velocity resolution / Maksimova A.A., Oshtrakh M.I., Klencsár Z., Petrova E.V., Grokhovsky V.I., Kuzmann E., Homonnay Z., Semionkin V.A. // Journal of Molecular Structure. - 2014. - V. 1073, l. C. - P. 196-201.

ISSN:

00222860

Type:

Article

Abstract:

A comparative study of troilite in bulk ordinary chondrites Farmington L5, Tsarev L5 and Chelyabinsk LL5 was carried out using Mössbauer spectroscopy with a high velocity resolution and two different fitting programs: in the first case the quadrupole interaction was treated as a perturbation to the first order on the nuclear Zeeman levels, whereas in the other case the full static Hamiltonian of the hyperfine interaction (magnetic + quadrupole) was taken into account for the excited and ground nuclear states. The first fit of the Mössbauer spectra revealed a difference between the hyperfine magnetic field values as found for troilite in Farmington L5 (307.7 ± 0.2 kOe) and in both Tsarev L5 (311.3 ± 0.3 kOe) and Chelyabinsk LL5 (311.9 ± 0.5 kOe), although the spectral component of troilite could not be fitted satisfactorily. In contrast, the second fit resulted in a more accurate description of the troilite spectral component, and revealed a difference in the electric field gradient values found for troilite in Farmington L5 (-4.85 ± 0.03 × 1021 V/m2) and in both Tsarev L5 (-4.68 ± 0.05 × 1021 V/m2) and Chelyabinsk LL5 (-4.66 ± 0.04 × 1021 V/m2), while the difference between the hyperfine magnetic field values was less pronounced. © 2014 Elsevier B.V.All rights reserved..

Author keywords:

Full static Hamiltonian; Mössbauer spectroscopy; Ordinary chondrites Farmington L5; Troilite; Tsarev L5 and Chelyabinsk LL5

Index keywords:

Electric fields; Hamiltonians; Magnetic fields; Electric field gradients; Hyperfine interactions; Hyperfine magnetic fields; Ordinary chondrites; Quadrupole interactions; Ssbauer spectroscopies; Troil

DOI:

10.1016/j.molstruc.2014.05.049

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925838953&doi=10.1016%2fj.molstruc.2014.05.049&partnerID=40&md5=babf7856f527c70d8315df40f96c6878
Affiliations	Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russian Federation; Department of Experimental Physics, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russian Federation; Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudosok Korutja 2, Budapest, Hungary; Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary
Author Keywords	Full static Hamiltonian; Mössbauer spectroscopy; Ordinary chondrites Farmington L5; Troilite; Tsarev L5 and Chelyabinsk LL5
Funding Details	Ministry of Education and Science of the Russian Federation
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Correspondence Address	Oshtrakh, M.I.; Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal UniversityRussian Federation
Publisher	Elsevier
CODEN	JMOSB
Language of Original Document	English
Abbreviated Source Title	J. Mol. Struct.
Source	Scopus