Space radiation

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■ Students involved

  Dongmin Ryu ( 



■ Description

  The space environment is customarily described by four physical components; neutral environment, plasma environment (<10 keV particles), high energy radiation environment (>10 keV particles), and particulate environment (MMOD, micrometeoroid and orbital debris). 

  Because the space environment is often dynamic and unpredictable, one of the first tasks when planning any space mission is to define and understand the environment in which the spacecraft would be operating. In addition, interactions between the space environment and the spacecraft is complex. If the design against the anticipated space environment condition is not proper, the success of mission could be compromised. Especially, more than 70% of the spacecraft anomaly is caused by plasma and high energy radiation environment. 

  Therefore, for the successful mission, the first task should be to define and model the space radiation environment and construct optimal shielding design. Next, influence of the radiation environment to the spacecraft would be investigated in an attempt to provide adequate radiation shielding design for the spacecraft.

  We are closely working with an expert in the field from NASA JPL (jet propulsion laboratory) as a consultant.


<Figure 1. Space radiation environment and its effect to the spacecraft>



 <Figure 2. Research scheme for the space radiation environment analysis>