Fig. 4
Typical olivine powders before and after irradiations with different pulse energy levels and number of irradiations. a) Original olivine sample; b) after irradiation with 25 mJ/pulse for 2 times; c) after irradiation with 50 mJ/pulse for 2 times; d) after irradiation with 50 mJ/pulse for 5 times. The sample holder used in reflectance measurement is also shown as a reference.
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