Thermal diffusivity of lunar rocks under atmospheric and vacuum conditions
書誌事項
- 公開日
- 1973-02
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- DOI
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- 10.1016/0012-821x(73)90035-6
- 公開者
- Elsevier BV
この論文をさがす
説明
Abstract Thermal diffusivity, k, of three lunar rocks (10049 and 10069; Type A, Apollo 11 and 14311; Apollo 14) and a terrestrial basalt (alkaline olivine basalt, Oki-doˆgo, Japan) was measured under one atmosphere and in vacuum conditions (10−3 ∼ 10−5 mmHg) in the temperature range from 85 to 850°K. The semi-empirical curve of k =A + B/T +CT3 is fitted to the data in each condition. The porosity of rocks strongly affects the thermal diffusivity at low temperature ( T ≲ 500°K) in vacuum condition. At 150°K, thermal diffusivity of lunar rocks with porosity of 5.5% (10049) and 11% (10069) at one atmosphere is about 1.7 and 3.2 times of that in vacuum, respectively. The difference between the values at one atmosphere and those in vacuum decreases as the temperature increases. Measurements of k should be made at gas pressures at least lower than 10−3 mmHg to estimate the value under lunar surface conditions.
収録刊行物
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- Earth and Planetary Science Letters
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Earth and Planetary Science Letters 18 (1), 65-71, 1973-02
Elsevier BV