Ion-irradiation of materials spectrally similar to the non-ice surface of Callisto

Details Ion-irradiation of materials spectrally similar to the non-ice surface of Callisto Ion-irradiation of materials spectrally similar to the non-ice surface of Callisto

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufm.p61a0340h&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #P61A-0340

Physics

6025 Interactions With Solar Wind Plasma And Fields, 6061 Remote Sensing, 6218 Jovian Satellites

Scientific paper

The three outer satellites of Jupiter are commonly referred to as 'icy satellites', but their surfaces contain significant amount of non-ice materials and the surface of Callisto is mostly covered by a non-ice lag-deposit. The non-ice material(s) on Ganymede and Callisto contain volatiles including CO2 and SO2. The distribution of CO2 and SO2 on Callisto demonstrate clear, but separate, relationships with the bombardment of the surface by energetic particles trapped in the Jovian magnetosphere. We attempt to explain the presence of these volatiles in the non-ice material on Callisto by irradiating pellets of powered minerals and mixtures that are spectrally similar to the non-ice material on the surface of Callisto (implying a compositional similarity). Pellets of phyllosilicates, palagonite, and mixtures of the minerals with carbon (used as a spectrally neutral darkening agent) were irradiated with singly- and doubly-charged approx. 1 MeV oxygen and sulfur ions. Heating, outgasing of trapped atmospheric gases, and possible production of new gases result from the irradiation. Bombardment by singly-charged oxygen ions heat the pellets samples more than bombardment by doubly-charged oxygen ions. Heating is greater in carbon-bearing samples than in carbon-free samples. A palagonite/carbon mixture heats and outgases more under bombardment than a phyllosilicate/carbon mixture. We are currently exploring the cause of the different heating and are determining if volatiles (not just trapped atmospheric gases) are produced during bombardment.

Affiliated with

Also associated with

No associations

Rating

Ion-irradiation of materials spectrally similar to the non-ice surface of Callisto does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ion-irradiation of materials spectrally similar to the non-ice surface of Callisto, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ion-irradiation of materials spectrally similar to the non-ice surface of Callisto will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1892214