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Mikael Elfman

Researcher

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Calibration of an elastic recoil setup for D/H-ratios close to natural abundance

Author

  • Linus Ros
  • Maciek Borysiuk
  • Per Kristiansson
  • N. Abdel
  • Mikael Elfman
  • E. J. C. Nilsson
  • Jan Pallon

Summary, in English

Nominally Anhydrous Minerals (NAM) in the Earth's mantle contain trace amounts of hydrogen, as a result of the NAM's ability to incorporate hydroxyl ions. The isotopic composition of these hydrogen reservoirs is for the Earth's crust, well characterized. The knowledge of the isotopic composition of the Earth's interior on the other hand is limited. It is believed that the hydrogen composition in the interior is isotopically heterogeneous and that there may exist several reservoirs of hydrogen, characterized by different deuterium/hydrogen-ratios. Characterization of these hydrogen reservoirs can provide valuable information about the mass transport of hydrogen during the evolution of the planet. In this work we present a variant of the proton-proton scattering technique with which we are capable of performing simultaneous measurements of deuterium and hydrogen. The method has been tested with a 2.9 MeV deuteron beam on a polyethylene standard, with D/H ratio close to the natural abundance, and on a thin sample of Muscovite with a hydrogen concentration of 4800 wt-ppm. This is followed by a discussion about limitations and capabilities of the technique. (C) 2014 The Authors. Published by Elsevier B.V.

Department/s

  • Nuclear physics
  • NanoLund: Centre for Nanoscience

Publishing year

2014

Language

English

Pages

187-190

Publication/Series

Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

Volume

332

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Keywords

  • D/H-ratio
  • Deuteron-deuteron scattering
  • Deuteron-proton scattering
  • Hydrogen isotopes
  • Hydrogen analysis
  • Deuterated polyethylene target

Status

Published

ISBN/ISSN/Other

  • ISSN: 0168-583X