LDEF宇宙船の衝突クレーターにあるフラーレン
F Radicati di Brozolo1, T E Bunch, R H Fleming
1Charles Evans and Associates, Redwood City, California 94063, USA.
Nature
|May 5, 1994
まとめ
フルレレン (C60やC70のような分子) は,長期曝露施設 (LDEF) の宇宙船からの宇宙ゴミで検出されました. この発見は,宇宙にフラーレンが存在し,おそらく隕石から発生した,あるいは衝突時に形成された証拠を提供する.
科学分野:
- アストロケミストリー アストロケミストリー
- マテリアルサイエンス 材料科学
- 惑星科学は惑星科学である.
背景:
- フルレレン (C60とC70) は地球上で知られており,宇宙に存在すると仮定されています.
- 隕石を含む宇宙フラーレンの以前の探求は,決定的な証拠を欠いていた.
- 星間雲のスペクトルはフルレンの存在を示唆しているが,直接観測は欠けている.
研究 の 目的:
- 宇宙にフラーレンの存在を調査するために.
- LDEF (Long Duration Exposure Facility) の宇宙船からの炭酸性衝撃残留物を分析するために.
- 宇宙環境におけるフラーレンの起源と生存を決定する.
主な方法:
- レーザーイオン化質量スペクトロメトリ
- ラーマン光譜法 (Raman spectroscopy) が使われています.
- LDEF宇宙船からの衝突残留物の分析
- ハイパースピード衝突実験
主要な成果:
- フラーレンはクレーターで検出され,LDEF宇宙船で放出されました.
- 実験的なインパクトは,フルレレンが超高速衝突を生き延びることができることを示しました.
- 証拠によると,フルレレンは楽器の遺物や汚染物質ではなかった.
結論:
- この研究は,宇宙衝突の残留物に関連したフルレレンに関する最初の観察的証拠を提供します.
- この発見は,フラーレンは隕石によって地球に届いたり,宇宙で形成された可能性を示唆している.
- この研究は,宇宙におけるフルレンの形成と分布を理解するための道を開く.
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