Volume 32 Issue 6
Nov.  2012
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ZHANG Jian, XIE Aigen, WANG Ling, WANG Tiebang. Numerical Calculation and Research of the Effects of Secondary Emission Characteristics on Surface Charging[J]. Chinese Journal of Space Science, 2012, 32(6): 862-868. doi: 10.11728/cjss2012.06.862
Citation: ZHANG Jian, XIE Aigen, WANG Ling, WANG Tiebang. Numerical Calculation and Research of the Effects of Secondary Emission Characteristics on Surface Charging[J]. Chinese Journal of Space Science, 2012, 32(6): 862-868. doi: 10.11728/cjss2012.06.862

Numerical Calculation and Research of the Effects of Secondary Emission Characteristics on Surface Charging

doi: 10.11728/cjss2012.06.862
  • Received Date: 2011-07-03
  • Rev Recd Date: 2011-11-20
  • Publish Date: 2012-11-15
  • Surface charging is a space environment effect. It is one of the major incentives for spacecraft anomalies and failures, which is caused by the space environment. By using more accurate universal formulas for the secondary electron yield from metals and the local current balance model, the charging potentials of shaded-surfaces of a spacecraft are calculated for different surface materials and shapes in MATLAB. According to the results, we draw several curves of the charging potentials and the maximum secondary electron yield. Based on the numerical results, the secondary electron yield and the curves, it can be concluded that spacecraft surface charging have a great relationship with the maximum secondary electron yield, atomic number and the secondary electron yield caused by incident ions. These give certain reference value for the selection and design technique of surface materials.

     

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