用X射线荧光法比较银的含量
Comparing the Ag-content of poltinniks using X-ray fluorescence
摘要：
为了分析1913年、1921年和1924年铸造的四枚50戈比的俄罗斯硬币（“poltinniks”）的元素组成，进行了X射线荧光实验。通过比较两枚硬币发射的Ag Kα X射线的强度，我们能够确定两枚硬币的Ag含量是否相等。这项研究的目的之一是确定是否有立法要求1924年铸造硬币时使用的银和铜的比例与前几年相同。此外，还比较了1924枚伦敦和列宁格勒铸造的银Kα X射线的强度。我们的研究结果表明，银的比例存在于每个硬币的百分比差异不超过5.5%。
英文摘要：
X-ray fluorescence experiments have been performed in order to analyze the elemental composition of four Russian 50-kopek coins ("poltinniks") minted during 1913, 1921, and 1924. By comparing the intensities of the Ag Kα X-rays emitted by the poltinniks, we were able to determine whether the Ag-content of the coins were equal. One of the goals of this study was to determine whether or not legislation was carried out that required the proportions of Ag and Cu used in the minting of coins in 1924 to be identical to those minted in previous years. Also, the intensities of the Ag Kα X-rays emitted by 1924 poltinniks minted in London and Leningrad were compared. Our results suggest that the percent difference in the proportions of Ag present in each of the coins is no more than 5.5%.
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