Physics
Scientific paper
Oct 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..gecgtp092d&link_type=abstract
American Physical Society, 55th Gaseous Electronic Conference, October 15-18, 2002, Minneapolis, MN, Meeting ID GEC02, abstract
Physics
Scientific paper
Decomposition of CO2 was studied in a capacitively coupled radio frequency discharge. The experiment was performed in a mixture similar to Mars atmosphere with 95% of CO2 at gas pressure of 5-7 Torr and a low discharge power regime. Since the main mechanism of CO2 decomposition process is the electron impact dissociation collisions, the rate of process is directly influenced by the electron density, N_e, the concentration of CO_2, and the reduced electric field, E/N. A self-consistent model was established to describe the CO2 decomposition process based on these parameters. The model gave a description from microscopic processes of electron transport coefficients to macroscopic processes of gas phase chemical kinetics. The validity of the model was successfully verified by comparing the numerical results with the experimental data. The discharge characteristics such as T_e, N_e, and E/N, were determined by using the Langmuir probe technique, while the discharge temperature, T_g, was determined by using the CO rotational temperature that was obtained from the CO rotational emission spectrum, and compared with results obtained from the thermocouple measurements. The steady-state gas composition was measured using a quadrupole mass spectrometer. Measurement of gas composition in the discharge condition was within 5% of the prediction from the model. The results present a foundation for O2 extraction in situ on Mars or CO2 reduction in the industry.
Dinh Trung T.
Popovic Sinisa
Vuskovic Lepsa
No associations
LandOfFree
Decomposition of Carbon Dioxide with Aim to Produce Oxygen on Mars 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 Decomposition of Carbon Dioxide with Aim to Produce Oxygen on Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decomposition of Carbon Dioxide with Aim to Produce Oxygen on Mars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1661236