Development of a hybrid piston cylinder cell for quasielastic neutron scattering experiments up to 1 GPa
Development of a hybrid piston cylinder cell for quasielastic neutron scattering experiments up to 1 GPa
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DOI：
10.1080/08957959.2022.2068954
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发表时间：
2022-04
影响因子：
2
通讯作者：
T. Hattori;S. Ohira-Kawamura;T. Kawasaki
中科院分区：
文献类型：
--
作者：
T. Hattori;S. Ohira-Kawamura;T. Kawasaki
本文介绍了一种用于准弹性中子散射（QENS）实验的混合活塞圆柱室。它包括一个由高强度钢（SNCM 439）衬里和铝合金（NA 700）护套制成的磨损圆筒。性能测试表明，该电池可以承受0.8 GPa的压力，而不会造成不可逆的损坏，并且在3.14 meV（5.10 μ m波长）下的中子透射率比传统的CuBe单块圆柱体大4.4倍。结合为抑制多次散射而设计的样品组件，获得了高达0.8GPa的高质量水的QENS谱。这项研究说明了混合气缸的功效，不仅增加了最大可用压力，但也操纵可用的压力和信号强度，这取决于实验的目的。
ABSTRACT We have developed a hybrid piston cylinder cell for quasielastic neutron scattering (QENS) experiments up to about 1 GPa. It consists of a fretted cylinder made of the high tensile steel (SNCM439) liner and the Al alloy (NA700) jacket. Performance tests revealed that the cell can withstand a pressure of 0.8 GPa without irreversible damage and has 4.4 times larger neutron transmission at 3.14 meV (5.10 Å in wavelength) than that of a conventional CuBe monobloc cylinder. Combined with the sample assembly devised for suppressing multiple scattering, high quality QENS spectra of water were obtained up to 0.8 GPa. This study illustrates the efficacy of the hybrid cylinders not only for increasing maximum available pressure but also manipulating the available pressure and the signal intensity, depending on the purpose of the experiments.