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Trial Production of NMR Probe Applicable et Super High Temperatures (2000。C)

试制适用超高温（2000.C）的核磁共振探头

基本信息

批准号：
04554025
负责人：
YOKOKAWA Toshio
金额：
$ 9.92万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

项目摘要

Silicate melts are inorganic high polymers which can be realized only at high temperatures. Their thermodynamic properties have been clarified to considerable extents. However, much remains unsettled as to dynamics at atomic levels. NMR spectroscopy is potential for sending signals specific to solid (crystaline and glassy), super cooled liquid, and liquid states.In this two years project, was successfully produced a NMR probe which can be heated up 1800。C.It is composed of tungsten wire wound non-inductivelly on a boron nitride insulator, a heat shield and a water jacket. 630 watage was enough to raise the sample temperature to 1700。C.It seems not to be difficult to prepare any higher temperature when it is deadly needed. It can be installed in the ordinary wide bore magnet operated with the super conductor.A research group at a CNRS (Orleans) in France developed a NMR probe which can be heated much higher temperature with a laser heating device. In contrast, our probe is better in the sense that the thermodynamic equilibrium is established. At present, a joint project at Orleans with the International Scientific Research Program is in operation. We aim at better development of the NMR technique at high temperatures with this exchange program.

硅酸盐熔体是无机高聚物，只能在高温下才能实现。它们的热力学性质已在相当程度上得到澄清。然而，在原子水平上的动力学仍有许多未解决的问题。核磁共振光谱学是潜在的发送信号的特定固体（结晶和玻璃态），过冷液体，和液体状态。在这个两年的项目中，成功地生产了一个核磁共振探针，可以加热到1800。它是由钨丝绕在氮化硼绝缘体上，隔热罩和水套组成。630瓦足以将样品温度升高到1700。C.在非常需要的时候，准备更高的温度似乎并不难。它可以安装在与超导体一起工作的普通宽孔磁体中。法国法国国家科学研究中心（奥尔良）的一个研究小组开发了一种核磁共振探针，它可以用激光加热装置加热到更高的温度。相比之下，我们的探测器更好的意义上说，建立了热力学平衡。目前，在奥尔良与国际科学研究方案的一个联合项目正在运作。我们的目标是更好地发展核磁共振技术在高温下与这个交换计划。