Gas-Phase Production of NHD2 in L134N
Gas-Phase Production of NHD2 in L134N
复制标题
L134N 中 NHD2 的气相生产
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
S. Charnley
中科院分区：
文献类型：
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作者：
S. Rodgers;S. Charnley
我们通过分析表明，冷致密云内部的气相化学可以产生大量的 NH2D 和 NHD2。计算出的分馏比与之前在 L134N 中测定的值非常一致，表明在乌云中可以检测到三重氘代氨。颗粒表面反应可能会导致类似的 NH2D 和 NHD2 增强，但我们认为，不太可能对 L134N 中观察到的氘化做出贡献。
We show analytically that large abundances of NH2D and NHD2 can be produced by gas-phase chemistry in the interiors of cold dense clouds. The calculated fractionation ratios are in good agreement with the values that have been previously determined in L134N and suggest that triply deuterated ammonia could be detectable in dark clouds. Grain-surface reactions may lead to similar NH2D and NHD2 enhancements but, we argue, are unlikely to contribute to the deuteration observed in L134N.