来自原始陨石中石盐的灭绝的（129）碘：早期太阳系中蒸发岩形成的证据。
Extinct (129)I in halite from a primitive meteorite: evidence for evaporite formation in the early solar system.
作者信息
Whitby J, Burgess R, Turner G, Gilmour J, Bridges J
机构信息
Department of Earth Sciences, University of Manchester, Manchester M13 9PL, UK. Department of Mineralogy, Natural History Museum, London, SW7 5BD, UK.
出版信息
Science. 2000 Jun 9;288(5472):1819-21. doi: 10.1126/science.288.5472.1819.
Halite crystals from the Zag H3-6 chondrite contain essentially pure (monoisotopic) xenon-129 ((129)Xe) produced in the early history of the solar system by the decay of short-lived iodine-129 ((129)I) (half-life = 15.7 million years). Correlated release of (129)Xe and (128)Xe, produced artificially from (127)I by neutron irradiation, corresponds to an initial ((129)I/(127)I) ratio of (1.35 +/- 0.05) x 10(-4), close to the most primitive early solar system value. If the (129)Xe was produced by in situ decay, then the halite formed from an aqueous fluid within 2 million years of the oldest known solar system minerals.
扎格H3-6球粒陨石中的石盐晶体含有基本上纯净的（单同位素）氙-129（¹²⁹Xe），它是在太阳系早期由短寿命的碘-129（¹²⁹I）（半衰期 = 1570万年）衰变产生的。通过中子辐照由¹²⁷I人工产生的¹²⁹Xe和¹²⁸Xe的相关释放，对应于初始（¹²⁹I/¹²⁷I）比值为（1.35±0.05）×10⁻⁴，接近最原始的早期太阳系值。如果¹²⁹Xe是由原位衰变产生的，那么石盐是在已知最古老的太阳系矿物形成后的200万年内在含水流体中形成的。
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