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    • 10. 发明申请
    • SAMPLE-PREPARATION METHOD TO MANIPULATE NUCLEAR SPIN-RELAXATION TIMES, INCLUDING TO FACILITATE ULTRALOW TEMPERATURE HYPERPOLARIZATION
    • 用于处理核心松弛时间的样品制备方法,包括加速超温度高效
    • US20150061666A1
    • 2015-03-05
    • US14161172
    • 2014-01-22
    • Millikelvin Technologies LLCBuker Biospin Corporation
    • James G. KempfNeal KalechofskyMelanie Rosay
    • G01R33/31G01R33/48
    • G01R33/31G01R33/282
    • A method of providing a material sample in a state favorable to retaining spin polarization includes cooling a material sample from a temperature above a freezing point of the material sample down to a second temperature below the freezing point of the material sample; maintaining the sample at about the second temperature for a period of about several hours; and reducing temperature of the material sample to a third temperature lower than the second temperature to provide the material sample in a state favorable to retaining spin polarization, where the steps of cooling, maintaining and reducing are performed in the absence of an adulterant material. The method of providing a sample of pyruvic acid in a state favorable to retaining spin polarization may include cooling the sample of pyruvic acid in the absence of an adulterant material from a temperature above a freezing point of the sample of pyruvic acid down to less than about 200 Kelvin to provide the sample.
    • 以有利于保持自旋极化的状态提供材料样品的方法包括将材料样品从高于材料样品的凝固点的温度冷却至低于材料样品的凝固点的第二温度; 将样品保持在约第二温度约数小时; 并且将材料样品的温度降低到低于第二温度的第三温度,以提供有利于保持自旋极化的状态的材料样品,其中在没有掺杂材料的情况下进行冷却,保持和还原的步骤。 以有利于保持自旋极化的状态提供丙酮酸样品的方法可包括在不存在掺杂材料的情况下将丙酮酸样品从高于丙酮酸样品的凝固点的温度冷却到小于约 200开尔文提供样品。