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Planetary X-ray fluorescence analogue laboratory experiments and an elemental abundance algorithm for C1XS

Smith, David R.; Swinyard, Bruce M.; Gow, Jason +5 more

We have conducted laboratory experiments as an analogue to planetary XRF (X-ray fluorescence) missions in order to investigate the role of changing incidence (and phase) angle geometry and sample grain-size on the intensity of XRF from regolith-like samples. Our data provide evidence of a grain-size effect, where XRF line intensity decreases with …