用于高达1gpa准弹性中子散射实验的混合活塞缸池的研制

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

High Pressure Research Pub Date : 2022-04-03 DOI:10.1080/08957959.2022.2068954

T. Hattori, S. Ohira-Kawamura, T. Kawasaki

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引用次数: 0

摘要

摘要:我们研制了一种用于准弹性中子散射(QENS)实验的混合式活塞缸实验池，实验强度约为1 GPa。它由高强度钢(SNCM439)衬垫和铝合金(NA700)护套制成的微动圆柱体组成。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损伤，并且在3.14 meV(波长5.10 Å)下的中子透射率是传统CuBe单体圆柱体的4.4倍。结合为抑制多重散射而设计的样品组件，获得了高达0.8 GPa的高质量水的QENS光谱。该研究表明，混合动力气缸不仅可以提高最大有效压力，还可以根据实验目的控制有效压力和信号强度。

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Development of a hybrid piston cylinder cell for quasielastic neutron scattering experiments up to 1 GPa

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.

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来源期刊

High Pressure Research 物理-物理：综合

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

2 months

期刊介绍： High Pressure Research is the leading journal for research in high pressure science and technology. The journal publishes original full-length papers and short research reports of new developments, as well as timely review articles. It provides an important forum for the presentation of experimental and theoretical advances in high pressure science in subjects such as: condensed matter physics and chemistry geophysics and planetary physics synthesis of new materials chemical kinetics under high pressure industrial applications shockwaves in condensed matter instrumentation and techniques the application of pressure to food / biomaterials Theoretical papers of exceptionally high quality are also accepted.