Contaminant interferences with SIMS analyses of microparticle impactor residues on LDEF surfaces
| Autor: | D. A. Ricks, Dieter P. Griffis, J. L. Hunter, Dale Batchelor, Veena Misra, C. G. Simon, Jimmie J. Wortman |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Atmospheric Science
Materials science Micrometeoroid Aerospace Engineering Astronomy and Astrophysics Contamination Particulates Debris Secondary ion mass spectrometry Geophysics Space and Planetary Science Environmental chemistry Hypervelocity General Earth and Planetary Sciences Microparticle Layer (electronics) |
| Zdroj: | Advances in Space Research. 13:115-118 |
| ISSN: | 0273-1177 |
| DOI: | 10.1016/0273-1177(93)90576-w |
| Popis: | Elemental analyses of impactor residues on high purity surfaces exposed to the LEO environment for 5.8 years on LDEF has revealed several probable sources for microparticles at this altitude, including natural micrometeorites and manmade debris ranging from paint pigments to bits of stainless steel. A myriad of contamination interferences were identified and their effects on impactor debris identification mitigated during the course of this study. These interferences included pre-, post- and in-flight deposited particulate surface contaminants, as well as indigenous heterogeneous material contaminants. Non-flight contaminants traced to human origins, including spittle and skin oils, contributed significant levels of alkali-rich carbonaceous interferences. A ubiquitous layer of in-flight deposited silicaceous contamination varied in thickness with LDEF location and proximity to active electrical fields. In-flight deposited (low velocity) contaminants included urine droplets and bits of metal film from eroded thermal blankets. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|