[P-EM15] 宇宙プラズマ理論・シミュレーション

[PEM15-P12] 荷電粒子層に覆われた物体の電波散乱特性に関する数値シミュレーション

*三宅 洋平¹、高木 淳也²、臼井 英之² (1.神戸大学計算科学教育センター、2.神戸大学大学院システム情報学研究科)

キーワード：電波散乱、マイクロ波、固体プラズマ相互作用、電子シース、粒子シミュレーション

The present study addresses the characteristics of radio wave scattering by a solid obstacle that is surrounded by a dense electron sheath. Such investigations may contribute to various radio applications such as radar observations of space debris and small dust grains in space, as well as the plasma-based radar cross-section reduction techniques. We performed particle-in-cell simulations of an electron sheath formation around a conducting object. The obtained sheath and potential profiles are used for subsequent electromagnetic simulations, in which an incident radio wave is scattered by the conducting object covered with the dense electron layer. It is confirmed that an effective radar cross-section of such an object will differ from that placed in free space. We will report some preliminary results obtained from those simulations.

Acknowledgment:
This research and development work was supported by the MIC/SCOPE #196000002.