A comparative study of troilite in bulk ordinary chondrites Farmington L5, Tsarev L5 and Chelyabinsk LL5 using Mössbauer spectroscopy with a high velocity resolution

A. A. Maksimova, M. I. Oshtrakh, Z. Klencsár, E. V. Petrova, V. I. Grokhovsky, E. Kuzmann, Z. Homonnay, V. A. Semionkin

Research output: Contribution to journalArticle

13 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)196-201
Number of pages6
JournalJournal of Molecular Structure
Volume1073
Issue numberC
DOIs
Publication statusPublished - Sep 5 2014

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Spectroscopy
Magnetic fields
Hamiltonians
Electric fields

Keywords

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

ASJC Scopus subject areas

  • Spectroscopy
  • Analytical Chemistry
  • Inorganic Chemistry
  • Organic Chemistry

Cite this

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.

In: Journal of Molecular Structure, Vol. 1073, No. C, 05.09.2014, p. 196-201.

Research output: Contribution to journalArticle

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abstract = "A comparative study of troilite in bulk ordinary chondrites Farmington L5, Tsarev L5 and Chelyabinsk LL5 was carried out using M{\"o}ssbauer 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 M{\"o}ssbauer 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.",
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AU - Maksimova, A. A.

AU - Oshtrakh, M. I.

AU - Klencsár, Z.

AU - Petrova, E. V.

AU - Grokhovsky, V. I.

AU - Kuzmann, E.

AU - Homonnay, Z.

AU - Semionkin, V. A.

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N2 - 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.

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