Journal of the Mass Spectrometry Society of Japan
Online ISSN : 1880-4225
Print ISSN : 1340-8097
ISSN-L : 1340-8097
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Volume 69, Issue 6
Displaying 1-11 of 11 articles from this issue
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Preface
Special Issue: Basic Principles of Ion Detectors for Inorganic Mass Spectrometry
COMMENTARIES
EXTENDED ABSTRACT
  • Development of in-situ Depth Profiling for Extraterrestrial Materials with Isotope Nanoscope
    Yuta Otsuki, Ken-ichi Bajo, Hisayoshi Yurimoto
    2021 Volume 69 Issue 6 Pages 197-201
    Published: December 01, 2021
    Released on J-STAGE: December 15, 2021
    DOIhttps://doi.org/10.5702/massspec.21-122
    JOURNAL FREE ACCESS
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    Lunar and asteroidal regolith contains noble gases derived from solar wind implantation. These particles preserve ancient solar wind, which can be revealed an energy distribution of the solar wind at the period of implantation. The energy distribution of ancient solar wind can be evaluated by depth profiling of noble gases into an extraterrestrial sample. Because typical solar wind ions are implanted at less than 50 nm from the sample surface, the particle surface for analysis must be kept in its original shape. In this study, particle samples were embedded in indium metal to adjust angle and position of the sample surfaces. We measured depth profiles for 16O+, 56Fe2+, 48Ti2+ and 24Mg+ of ilmenite particles and a polished ilmenite. We obtained depth profiles of constant ion intensities from the ilmenite particles as well as the polished ilmenite. Reproducibilities for ion intensities normalized to 16O+ were up to 33% for particle samples and 19% for polished one.

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Letter to the Editor
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