Optical setup for a piston-cylinder type pressure cell: a double-volume approach

Abstract

Measurement of the absolute value of the applied pressure in high-pressure muon and neutron experiments is a complicated task. It requires both the presence of a calibration material inside the sample volume as well as additional time for refining the response of the calibrant. Here we describe the use of optical calibrants for precise determination of the pressure value inside the piston-cylinder clamp cells. Utilizing the concept of separate volumes for the sample and the optical media, a new setup for conducting in-situ pressure measurements has been successfully tested. Pressures in both the `sample' and the `optical' volumes were proved to be the same within experimental accuracy. The use of SrB${}_4$O${}_7$:(0.01 Sm${}^{2+}$, 0.03 Eu${}^{2+}$) as a pressure calibrant allows for a high accuracy of pressure determination by considering up to eight fluorescence lines.

arXiv comment9 pages, 9 figures

References in corpus (7)

• High pressure research using muons at the Paul Scherrer Institute
• Solidification and loss of hydrostaticity in liquid media used for pressure measurements
• Unsplit superconducting and time reversal symmetry breaking transitions in Sr${}_2$RuO${}_4$ under hydrostatic pressure and disorder
• A low-background piston-cylinder type hybrid high pressure cell for muon-spin rotation/relaxation experiments
• Clamp cell with $in$ $situ$ pressure monitoring for low-temperature neutron scattering measurements
• Anomalous gap ratio in anisotropic superconductors: aluminum under pressure
• Three-wall piston-cylinder type pressure cell for muon-spin rotation/relaxation experiments

Cited by in corpus (3)

• Perspective on the muon-spin rotation/relaxation under hydrostatic pressure
• Influence of pressure on properties of multi-gap type-I superconductor BeAu
• The use of LEDs as a light source for fluorescence pressure measurements