Fig. 10

Arbitrary quantified amount of ejecta for all collected data on sand and JSC-1 targets. The amount of ejecta mass was quantified as follows: 0 = no ejecta; 1 = ejection of single particles; 2 = ejecta blanket, mass of the order of the projectile mass; and 3 = ejecta blanket, mass much higher than the projectile mass. The impact velocity given for each target type is the average of all impacts that created the same amount of ejecta. Asterisk = quartz sand target, triangle = JSC-1 lunar simulant target, black = microgravity impacts, red = reduced-gravity impacts. The dotted line marks the limit between no significant ejecta produced (either none at all or only individual particles detaching) and an ejecta blanket