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Sanna Alwmark

Sanna Alwmark

Postdoctoral fellow

Sanna Alwmark

Combined Neutron and X-Ray Tomography—A Versatile and Non-Destructive Tool in Planetary Geosciences

Author

  • J. Martell
  • C. Alwmark
  • R. Woracek
  • S. Alwmark
  • S. Hall
  • L. Ferrière
  • L. Daly
  • C. Bender Koch
  • J. Hektor
  • S. Johansson
  • L. Helfen
  • A. Tengattini
  • D. Mannes
Show all

Summary, in English

With several upcoming sample return missions, such as the Mars Sample Return Campaign, non-destructive methods will be key to maximizing their scientific output. In this study, we demonstrate that the combination of neutron and X-ray tomography provides an important tool for the characterization of such valuable samples. These methods allow quantitative analyses of internal sample features and also provide a guide for further destructive analyses with little to no sample treatment, which maintains sample integrity, including minimizing the risk of potential contamination. Here, we present and review the results from four case studies of terrestrial impactites and meteorites along with their analytical setup. Using combined X-ray and neutron tomography, a Ni-Fe silicide spherule, that is, projectile material, was located within a Libyan Desert Glass sample and the distribution of hydrous phases was pinpointed in selected impactite samples from the Chicxulub IODP-ICDP Expedition 364 drill core and the Luizi impact structure, as well as in the Miller Range 03346 Martian meteorite.

Department/s

  • LINXS - Institute of advanced Neutron and X-ray Science
  • SEM-lab
  • Lithosphere and Biosphere Science
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • Solid Mechanics
  • LU Profile Area: Natural and Artificial Cognition
  • Engineering Geology

Publishing year

2024-02

Language

English

Publication/Series

Journal of Geophysical Research: Planets

Volume

129

Issue

2

Document type

Journal article review

Publisher

Wiley-Blackwell

Topic

  • Geology

Keywords

  • impactite
  • neutron tomography
  • planetary geology
  • projectile material
  • sample return
  • x-ray tomography

Status

Published

ISBN/ISSN/Other

  • ISSN: 2169-9097