Supercritical CO2 cleaning for planetary protection and contamination control

IEEE Aerospace Conference Proceedings

Volumn , Issue , 2010, Pages

  Lin, Ying ^a   Zhong, Fang ^a   Aveline, David ^a   Anderson, Mark ^a   Chung, Shirley ^a   Mennella, Jerami ^a   Schubert, Wayne ^a  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BACTERIAL SPORE; CLEAN SURFACES; CLEANING DEVICES; CLEANING EFFECTIVENESS; CLEANING EFFICIENCY; CLEANING METHODS; CLEANING TESTS; CONTAMINATION CONTROL; COSOLVENTS; FURTHER DEVELOPMENT; HYDROPHILIC COMPOUNDS; HYDROPHOBIC COMPOUNDS; HYDROPHOBIC CONTAMINANTS; IN-SITU; LIQUID CO; MARS MISSIONS; ORGANIC CONTAMINANT; PLANETARY PROTECTIONS; SAMPLE HANDLING; SAMPLE STORAGE; SCIENCE MISSIONS; SPACECRAFT MATERIALS; SUPERCRITICAL CO; SUPERCRITICAL CONDITION; TRACE AMOUNTS;

AIR CLEANERS; CONTAMINATION; HYDROPHOBICITY; INTERPLANETARY SPACECRAFT; LIQUIDS; MARTIAN SURFACE ANALYSIS;

STERILIZATION (CLEANING);

EID: 77952792582     PISSN: 1095323X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1109/AERO.2010.5446981     Document Type: Conference Paper

References (6)

1. Supercritical Carbon-dioxide Cleaning Technology Review, http://www.pprc.org/pubs/techreviews/CO2/co2intro.html
2. M. S. Anderson et al "Analysis of Semi-Volatile Residues Using Diffuse Reflectance Infrared Fourier Transform Spectroscopy" in Optical System Contamination: Effects, Measurements, and Control VII; July 2002, edited by Phillip T. C. Chen and O. Manuel Lee; Proceedings of the SPIE, Vol. 4774, pp. 251-261, (2002).
3. 2 sample. Note this limit is well below the adventitious carbon level (ref. 5). Lower limits are possible using modified methods.
4. 2) and this corresponds to an average film thickness of 100 angstroms (assuming a density of 1.0). In many cases more stringent limits apply.
5. 2, with mono-molecular layers or less are more complex to describe when cleaning or analyzing. Carbon/hydrocarbon based substances are known to rapidly (within ∼1 hour) accumulate on most, if not all, freshly exposed surfaces. H. Piao and N. S. McIntyre, "Adventitious carbon growth on aluminum and gold - aluminum alloy surfaces", Surface and Interface Analysis, 2002; 33: 591-594.
6. David C. Shallcross, 2005. "Preparation of psychrometric charts for water vapour in Martian atmosphere", International Journal of Heat and Mass Transfer 48 (2005) 1785-1796