Prompt gamma-ray analysis (PGA) of meteorite samples, with emphasis on the determination of Si

Sk A. Latif, Y. Oura, M. Ebihara, G. W. Kallemeyn, H. Nakahara, C. Yonezawa, T. Matsue, H. Sawahata

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Neutron-induced prompt gamma-ray analysis (PGA) was applied to seven meteorite samples (Allende, Zagami, Acfer 209, ALH77005, ALH84001, EET79001 and Neagari). Samples were irradiated in both the thermal neutron and the cold neutron guided beams of JRR-3M at JAERI. Multiple samples of an Allende standard powder were analyzed for Si using two different methods: (1) the comparison method, using a Si standard, and (2) the mono-standard method, using Fe as an internal reference element. The Si concentrations determined by these two methods are in good agreement with literature values. The analytical sensitivity for Si using the cold neutron guided beam is ~14.3x higher than that for the thermal neutron guided beam. Other elements determined (B, Ca, Ti and S) also showed higher sensitivities using the cold neutron beam. The other meteorites studied showed some anomalous B and S values likely due to the effects of terrestrial weathering/contamination.

Original languageEnglish
Pages (from-to)577-580
Number of pages4
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume239
Issue number3
DOIs
Publication statusPublished - 1999 Jan 1
Externally publishedYes

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

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