発光と熱発光は,159百万電子ボルトの陽子の爆撃によって引き起こされる
Science (New York, N.Y.)
|January 30, 1970
まとめ
研究者らは,エンスタタイトのアコンドライトに似た,隕石のサンプルで赤色発光を観測した. この発光は,特にプラジオクラゼでは,低温で増幅され,ほとんどの鉱物分数において,ユニークな,重複しない青色の熱発光を示します.
科学分野:
- 地質化学 地質化学
- ミネラル物理学 ミネラル物理学
- 惑星科学 惑星科学
背景:
- 隕石材料,特にエンスタタイトアコンドライトは,特徴的な発光を示しています.
- 地球外物質の発光特性を理解することは,遠隔感知とサンプル分析に不可欠です.
研究 の 目的:
- 隕石の微細物や鉱物分離物における赤色発光と青色の熱発光を調査する.
- これらの光現象のエネルギー効率と温度依存性を特徴づける.
- 観測された熱発光を地上のサンプルや他の隕石のサンプルと比較する.
主な方法:
- 未分類の細部,分離された鉱物相,岩石のチップにおける赤色発光の観測.
- プラジオクラゼ分子のエネルギー効率の測定.
- -196°Cでの光増強の分析
- 青色熱発光の特徴化,輝くピーク温度とエネルギー効率を含む,様々な分数について.
- 熱発光の再現性を,アニリング後の再現性をテストする.
主要な成果:
- エンスタタイトのアコンドライトに似た赤色発光は,すべてのサンプルタイプで観察されました.
- プラジオクラゼ分子は,赤色発光に対して約1%のエネルギー効率を示し,196°Cで1〜2倍強化されました.
- ほとんどの分子は青色の熱発光 (ピークは−135°C近く,効率は~4x10^-6) を示し,それは化後でも再現できませんでした.
- 不透明な分子は,青色の熱発光を未分類の細部で隠した.
結論:
- 観測された赤色発光は,既知のエンスタタイトアコンドライトの特性と一致しています.
- 青色の熱発光の重複しない性質は,それを地上の物質や他の隕石物質と区別する.
- これらの発見は,隕石体の光学特性と潜在的な表面プロセスに関する洞察を提供します.
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