Your browser doesn't support javascript.
loading
In Situ Helium Isotope Microimaging of Meteorites.
Bajo, Ken-Ichi; Kawasaki, Noriyuki; Sakaguchi, Isao; Suzuki, Taku T; Itose, Satoru; Matsuya, Miyuki; Ishihara, Morio; Uchino, Kiichiro; Yurimoto, Hisayoshi.
Afiliación
  • Bajo KI; Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
  • Kawasaki N; Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
  • Sakaguchi I; National Institute for Materials Science, Tsukuba 305-0044, Japan.
  • Suzuki TT; National Institute for Materials Science, Tsukuba 305-0044, Japan.
  • Itose S; JEOL Ltd., Akishima 196-8558, Japan.
  • Matsuya M; JEOL Ltd., Akishima 196-8558, Japan.
  • Ishihara M; Department of Physics, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan.
  • Uchino K; Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan.
  • Yurimoto H; Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
Anal Chem ; 96(13): 5143-5149, 2024 Apr 02.
Article en En | MEDLINE | ID: mdl-38509446
ABSTRACT
Isotope imaging is commonly used to investigate the localization of trace elements and their isotopes. In situ noble gas analysis of meteorites revealed the distribution of primordial noble gases that were trapped in the building blocks of asteroids and planets during the early stage of the solar system evolution. Solar wind noble gases are among the primordial gases present in meteorites and were trapped through exposure to solar wind. Micrometer-resolution in situ noble gas analysis has not been achieved due to the lack of sensitivity and spatial resolution. The microscale imaging technique is crucial for identifying the carrier phase of the solar wind noble gases. We have developed 4He isotope imaging utilizing secondary neutral mass spectrometry with strong field postionization. This technique achieved a lateral resolution of 2 µm and a 4He detection limit of 2 × 1017 cm-3. This development allows for the study of a solar wind gas-rich meteorite, Northwest Africa 801 carbonaceous chondrite, with micrometer resolution. The solar wind 4He carriers are fine-grained particles and are sparsely scattered in the matrix region.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Chem Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Chem Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos