Cuprous oxide manometer for high-pressure magnetic resonance experiments
Cuprous oxide manometer for high-pressure magnetic resonance experiments
复制标题
DOI：
10.1063/1.1142564
复制
发表时间：
1992-05
影响因子：
1.6
通讯作者：
A. Reyes;E. Ahrens;R. Heffner;P. Hammel;J. Thompson
中科院分区：
文献类型：
--
作者：
A. Reyes;E. Ahrens;R. Heffner;P. Hammel;J. Thompson
我们提出了一种压力计，设计用于测量1-20 kbar的压力，温度在4-300 K之间，在气缸活塞型腔室中，精度为100 bar。该压力计基于与Cu 2 O中的π ±3/2 π参与π ±1/2 π跃迁相对应的压力相关零场63 Cu核四极共振频率。用O-Cu-O键晶格振动模模型解释了原子核四极共振频率νQ随压力的线性变化和温度的依赖关系。该压力计特别适用于零场或高场磁共振实验。
We present a manometer designed to measure pressures of 1–20 kbar in temperatures between 4–300 K in cylinder‐piston type chambers, with an accuracy of ∼100 bar. The manometer is based on pressure‐dependent zero‐field 63Cu nuclear quadrupole resonance frequency corresponding to ‖±3/2〉↔‖±1/2〉 transition in Cu2O. The nuclear quadrupole resonance frequency νQ varies linearly with pressure and its temperature dependence is adequately explained by a model of lattice vibrational modes in O—Cu—O bonds. This manometer is particularly convenient for zero or high‐field magnetic resonance experiments.