冰中甘氨酸的辐解破坏：火星的首次原位实验室测量
Glycine's Radiolytic Destruction in Ices: First In-Situ Laboratory Measurements for Mars
摘要：
我们报告了新的实验室研究辐射引起的破坏甘氨酸含冰的温度和成分范围内，允许外推到火星的条件。原位红外光谱被用来研究甘氨酸衰减率作为温度（从15至280 K）和初始甘氨酸浓度的函数在6个混合物，其组成范围从干甘氨酸到H $_2$ O +甘氨酸（300：1）。结果以几种单位制表示，并附有使用注意事项。甘氨酸在火星表面下的半衰期估计为这一数据集火星条件的外推，和衰减率的趋势被描述为是火星近表面化学的应用。
英文摘要：
We report new laboratory studies of the radiation-induced destruction of glycine-containing ices for a range of temperatures and compositions that allow extrapolation to Martian conditions. In-situ infrared spectroscopy was used to study glycine decay rates as a function of temperature (from 15 to 280 K) and initial glycine concentrations in six mixtures whose compositions ranged from dry glycine to H$_2$O + glycine (300:1). Results are presented in several systems of units, with cautions concerning their use. The half-life of glycine under the surface of Mars is estimated as an extrapolation of this data set to Martian conditions, and trends in decay rates are described as are applications to Mars's near-surface chemistry.
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