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Wiktionary英語版
出典：Wiktionary
cold trap
名詞
- In vacuum applications, a device that condenses all vapours except the permanent gases into a liquid or solid, typically to prevent contamination of a vacuum pump.
- (astronomy) An atmospheric layer that is significantly colder than the adjacent layers both deeper and higher. It keeps ascending gases that have high melting points from escaping the atmosphere by freezing them to a solid which then drops back to the planet surface.
- 1983, Christopher P. McKay and Gary E. Thomas, “Formation of noctilucent clouds by an extraterrestrial impace”, in Geological Implications of Impacts of Large Asteroids and Comets on the Earth, →ISBN:
- The impact of a large body in the oceans would inject large quantities of water through the tropopause cold trap into the stratosphere and lower mesosphere.
- 2009, Patrick Irwin, Giant Planets of Our Solar System: Atmospheres, Composition, and Structure, →ISBN, page 97:
- Since the tropopauses of these planets are very cold, there is effectively a cold trap, which in the absence of any other sources should keep the stratospheric water abundance very low, as discussed in Section 4.3.3.
- 2008, Donald Rapp, Assessing Climate Change, →ISBN, page 24:
- The heat input to polar areas prevents this global cold trap catastrophe from happening, but during ice ages, significant capture of the Earth's water in polar areas will occur.
- 2010, Raymond T. Pierrehumbert, Principles of Planetary Climate, →ISBN, page 547:
- The tropopause acts as a cold trap, dehumidifying the upper atmosphere and strongly limiting the opportunity for water vapor to escape or for hydrogen to build up in Earth's upper atmosphere through decomposition of water vapor.
coldtrap
ウィキペディア英語版
出典：Wikipedia
Cold trap
出典:『Wikipedia』 (2011/07/19 12:35 UTC 版)
英語による解説
ウィキペディア英語版からの引用
- 引用
In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases into a liquid or solid. The most common objective is to prevent vapors from a vacuum pump from contaminating the experiment or sample of interest. Cold traps also refer to the application of cooled surfaces or baffles to prevent oil vapours from flowing from a pump and into a chamber. In such a case, a baffle or a section of pipe containing a number of cooled vanes, will be attached to the inlet of an existing pumping system. By cooling the baffle, either with a cryogen such as liquid nitrogen, or by use of an electrically driven Peltier element, oil vapour molecules that strike the baffle vanes will condense and thus be removed from the pumped cavity.
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- Wiktionary
- Text is available under Creative Commons Attribution-ShareAlike (CC-BY-SA) and/or GNU Free Documentation License (GFDL).
Weblio英和・和英辞典に掲載されている「Wiktionary英語版」の記事は、Wiktionaryのcold trap (改訂履歴)、coldtrap (改訂履歴)の記事を複製、再配布したものにあたり、Creative Commons Attribution-ShareAlike (CC-BY-SA)もしくはGNU Free Documentation Licenseというライセンスの下で提供されています。
- Wikipedia
- Text is available under Creative Commons Attribution-ShareAlike (CC-BY-SA) and/or GNU Free Documentation License (GFDL).
Weblio英和・和英辞典に掲載されている「Wikipedia英語版」の記事は、WikipediaのCold trap (改訂履歴)の記事を複製、再配布したものにあたり、Creative Commons Attribution-ShareAlike (CC-BY-SA)もしくはGNU Free Documentation Licenseというライセンスの下で提供されています。
