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首页> 外文期刊>Science Advances >Krypton isotopes and noble gas abundances in the coma of comet 67P/Churyumov-Gerasimenko
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Krypton isotopes and noble gas abundances in the coma of comet 67P/Churyumov-Gerasimenko

机译：彗星67P / Churyumov-Gerasimenko昏迷中的同位素和稀有气体丰度

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The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis mass spectrometer Double Focusing Mass Spectrometer on board the European Space Agency’s Rosetta spacecraft detected the major isotopes of the noble gases argon, krypton, and xenon in the coma of comet 67P/Churyumov-Gerasimenko. Earlier, it was found that xenon exhibits an isotopic composition distinct from anywhere else in the solar system. However, argon isotopes, within error, were shown to be consistent with solar isotope abundances. This discrepancy suggested an additional exotic component of xenon in comet 67P/Churyumov-Gerasimenko. We show that krypton also exhibits an isotopic composition close to solar. Furthermore, we found the argon to krypton and the krypton to xenon ratios in the comet to be lower than solar, which is a necessity to postulate an addition of exotic xenon in the comet.
机译：欧洲航天局Rosetta航天器上的用于离子和中性分析的Rosetta轨道质谱仪，双聚焦质谱仪在彗星67P / Churyumov-Gerasimenko昏迷中检测到了稀有气体氩，k和氙的主要同位素。早先发现，氙气具有与太阳系其他任何地方不同的同位素组成。但是，氩同位素在误差范围内被证明与太阳同位素丰度一致。这种差异表明在67P / Churyumov-Gerasimenko彗星中还存在氙的其他奇异成分。我们表明k也具有接近太阳的同位素组成。此外，我们发现彗星中的氩与k的比率以及to与氙的比率均低于太阳，这是推测彗星中添加异种氙的必要条件。

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