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1. 发明授权

US4791585A Cryogenic thermometer employing molecular luminescence 失效
标题翻译：使用分子发光的低温温度计
公开(公告)号：US4791585A
公开(公告)日：1988-12-13
申请号：US706331
申请日：1985-02-27
申请人： August H. Maki , Mohammad-Reza Taherian
发明人： August H. Maki , Mohammad-Reza Taherian
IPC分类号： G01K11/32 , G01J5/00 , G01K11/00
CPC分类号： G01K11/3213
摘要： A cryogenic thermometer using molecular luminescence determines temperature. A sensor material is used which is capable of emitting radiant energy from a spin multiplet when excited, the excited state being characterized by a large zero field splitting (ZFS), and in which two of the sublevels split by the ZFS are radiative in the visible or near infrared region and are optically resolvable from each other. Spin-lattice relaxation rates between the sublevels are much larger than the sublevel decay rates to other states in order that their populations remain close to thermal equilibrium during optical pumping. The relative intensity of the two bands of radiation is determined and the temperature calculated therefrom. Xanthione (XS) dissolved in n-hexane may be used as a sensor material in the optimum range of 3 to 10K, with estimated precision varying between 0.4 mK and 3.0 mK within this range. Other disclosed sensor materials should allow extension of the optimal range to about 20K on the high end and somewhat below 2K on the low end.
摘要翻译：使用分子发光的低温温度测定温度。使用传感器材料，其能够在被激发时从自旋多重峰发射辐射能，所述激发态的特征在于大的零场分裂（ZFS），其中由ZFS分裂的两个子级在辐射可见或近红外区域并且彼此可光学地解析。子层之间的自旋晶格弛豫速率比其他状态的次级衰减速率大得多，以便在光泵浦期间它们的群体保持接近热平衡。确定两个辐射带的相对强度，并由此计算温度。溶解在正己烷中的Xanthione（XS）可以用作3至10K的最佳范围内的传感器材料，估计精度在该范围内在0.4mK和3.0mK之间变化。其他公开的传感器材料应允许将最佳范围扩展到高端约20K，低端稍微低于2K。

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