Abstract
Mono-mineral and ultramafic geochemical reference materials (GRMs) were analyzed using a 2.5 MeV broad-beam proton-induced X-ray emission (PIXE) system designed to emulate the PIXE branch of the Mars Science Laboratory alpha-particle X-ray spectrometer (APXS). These samples supplement the heterogeneous rocks of our earlier emulation work. The results confirm that PIXE provides high-accuracy concentrations for major and minor elements in homogeneous samples, and the results agree well with those from mono-minerals in the original APXS calibration. A second X-ray detector was added to the system to extend the emulation to the X-ray fluorescence branch of the APXS. The GRMs analyzed using this detector have relatively high concentrations of the trace elements copper, zinc, rubidium, strontium or zirconium. Our PIXE concentrations were compared to values provided by both the GRM suppliers and an independent corporation. Agreement was good in most cases, with individual deviations attributed mainly to inaccuracies in these reference concentrations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
