TEGA Measurements through Sol 25

Quicklookand VERY Preliminary!

•Characterization Phase

–Atmosphere measurement

•Need Calibration Gas Run to get absolute measurements

•Pristine Atmosphere Runs

–Sols 9,11,12,16

•Primary Objective measure D/H ratio, water vapor

•Need calibration gas run

•Soil Sample

–Sequence Completed on Sol 25

•Minimal to no water observed in Low T and Mid T

•Some Adsorbed CO2

TEGA High Temperature Rerun (Day 2)

Dodo

TEGA High Temperature Run (Day 1)

Dodo

TEGA High Temperature Run (Day 1)

Dodo

TEGA High Temperature Run (Day 1)

Dodo

TEGA High Temperature Rerun (Day 2)

Dodo

TEGA High Temperature Rerun (Day 2)

Dodo

Preliminary Interpretation

Very little water release (surprising)

No SO2observed, but calibration may be an issue

No organics fragments observed

CO2and O2prominent gases released

Candidate Phases

VERY Preliminary

CO2

Carbonates (low temperature decomposition of Fe-Mg carbonates)

Combustion of organic

O2(or S)

Decomposition of Fe and/or Mnoxides

Decomposition of sulfates (SO2peak missed in calibration)