ALSS: Apparatus for the loading of sublimable systems

doi:10.1088/1674-1056/ae60f2

Abstract A system for the loading of sublimable systems at 0 ℃ into a versatile membrane/screw-actuated symmetric diamond anvil cell (DAC) has been developed. This system, known as the Apparatus for the Loading of Sublimable Systems (ALSS), has the unique incorporation of an internal membrane, which acts against the clamping force of the screws. Through the inflation/deflation of the internal membrane, it is possible to open and close the cell under a pressurized environment without the need to maintain pressure differentials and/or high-pressure mechanical feedthroughs. Here, we present an overview of ALSS and its application in loading sulfur hexafluoride (SF₆) and carbon dioxide (CO₂), including the first infrared absorption measurements of SF₆ up to 50 GPa.

Keywords: diamond anvil cell (DAC) apparatus for the loading of sublimable systems (ALSS)

Received: 23 March 2026
Revised: 15 April 2026
Accepted manuscript online: 17 April 2026

PACS:	07.35.+k	(High-pressure apparatus; shock tubes; diamond anvil cells)
	91.60.Gf	(High-pressure behavior)
	92.60.hv	(Pressure, density, and temperature)
	62.50.-p	(High-pressure effects in solids and liquids)

Fund: The authors acknowledge SOLEIL synchrotron and the SMIS beamline for their support during the experiments conducted under proposal 20240376. P. D-S. acknowledges the support of the National Natural Science Foundation of China (Grant No. W2532012).

Corresponding Authors: Mario Santoro, Federico Gorelli, Philip Dalladay-Simpson
E-mail: santoro@lens.unifi.it;federico.gorelli@hpstar.ac.cn;philip.dalladay-simpson@hpstar.ac.cn

Cite this article:

Yuchen Ye(叶育辰), Huixin Hu(胡蕙昕), Jin Zhang(张锦), Francesco Capitani, Mario Santoro, Federico Gorelli, and Philip Dalladay-Simpson ALSS: Apparatus for the loading of sublimable systems 2026 Chin. Phys. B 35 070703

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ALSS: Apparatus for the loading of sublimable systems

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