Photostimulated luminescence applicable to pre-screening of potassium-rich phases in chondritic breccias

Tatsunori Yokoyama, Keiji Misawa, Osamu Okano, Haruka Minowa, Takaaki Fukuoka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The identification of alkali-rich components in extraterrestrial materials along with their separation from other constituents is indispensable for subsequent cosmochemical and isotopic studies. This paper presents a simple pre-screening method for such materials by autoradiography using imaging plates (IPs), which is applicable to identification of mm-sized samples containing ca. 30 µg of potassium in the Yamato-74442 chondrite. The detection limit of IPs was ~1 mBq of 40K under 49 days exposure. The method provides an opportunity to screen meteorite materials non-destructively and to inexpensively check potassium-rich areas and are suitable for the 40K–40Ca and 40K–40Ar (39Ar–40Ar) age determinations.

Original languageEnglish
Pages (from-to)81-89
Number of pages9
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number1
Publication statusPublished - Oct 1 2016


  • Chondritic meteorites
  • Imaging plate
  • K decay
  • K-rich rock fragments

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


Dive into the research topics of 'Photostimulated luminescence applicable to pre-screening of potassium-rich phases in chondritic breccias'. Together they form a unique fingerprint.

Cite this