1990•University of North Texas Digital Library (University of North Texas)Open access

Thorium resonance ionization mass spectrometry for geochronological and geochemical applications

Bryan L. Fearey, Sonia Johnson, N. S. Nogar, M. T. Murrell, Charles M. Miller

Abstract

Resonance Ionization Mass Spectrometry (RIMS) is being developed to measure thorium isotopics from geological samples. These measurements, in conjunction with uranium measurements by thermal ionization, permit geochronological dating in the timescale of 10,000 to 350,000 years. 15 refs., 2 figs.

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Available abstract

Key concepts: Thorium, Thermal ionization mass spectrometry, Uranium, Mass spectrometry, Thermal ionization, Ionization, Resonance (particle physics), Isotopes of thorium