Anderson, F Scott; Nowicki, Keith; Whitaker, Tom; Mahoney, John; Young, David; Miller, Greg; Waite, J H; Norman, Marc; Boyce, Joe; Taylor, G Jeffrey
We are developing a portable laser desorption resonance ionization mass spectrometer (LDRIMS) for determining the radiometric age of rocks using the 87Rb- 87Sr isotope system, as well as constraining lithologic evolution and measuring chemical compositions. The bench-top prototype has been used to assess the capability of LDRIMS to measure 87Sr/ 86Sr. In this paper, we demonstrate that LDRIMS can measure the isotope ratios of a glass standard with 10 ppm net Sr to a precision of ±0.5% (1σ),...[Show more]
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