Image Details
Caption: Figure 4.
XPS survey spectra of olivine (top) and lizardite (bottom) before irradiation (black line), after irradiation with 8.29 × 1016 He+ cm−2 (red line), and then after soaking it in HPLC H2O for 5 minutes (blue line). The three spectra have been vertically offset for clarity.
© 2026. The Author(s). Published by the American Astronomical Society.