In Situ X‑Ray Diffraction Study on Hydrate Formation at Low Temperature in a High Vacuum

The condition for incorporating simple gases with H 2 O to form clathrate hydrates in protosolar nebula is a subject of topical interest. Methane and carbon dioxide clathrate hydrates have been speculated to exist in outer solar system bodies, but they have eluded direct detection so far. We have constructed a low-temperature and high-vacuum system to prepare and study clathrate hydrates by in situ synchrotron X-ray diffraction experiments.Upon heating, we found clathrate hydrates can be obtained from the codeposition of methane or carbon dioxide with water outside the equilibrium thermodynamic stability region under high vacuum. We suggested that the hydrate formation is assisted by the phase transformations in the ice, which provide the necessary activation energy to increase the mobility of the guest and water molecules. The results provide a new perspective on how “metastable” gas hydrate can be formed.

Breaks Fluid Feedthroughs

Vacuum Breaks — excellent voltage isolation in both UHV and HV environments.Constructed using high purity alumina ceramic sealed to stainless sleeve adapters. Water, Fluid Breaks — voltage isolation in water or coolant fluid lines. Soldering or brazing requires low temperatures below 700°C. Standard adapters fit 1/4 to 1/2 Inch diameter tubes. Cryogenic, Fluid Breaks — great voltage isolation for cryogenic fluid lines. Designed to be TIG welded into cryogenic fluid transmission lines with 1/8 to 3/8 Inch diameters.Allows safe operation to –200°C.

我司在中国科学院合肥物质科学研究院顺利完成美国ARS超低振动超紧凑型低温恒温器验收工作

近日我司在中国科学院合肥物质科学研究院顺利完成美国ARS（ADVANCED RESEARCH SYSTEMS）超低振动超紧凑型低温恒温器验收工作，该款超低振动低温恒温器为完全无液氦系统，超级紧凑的尾端结构只有19mm, 可实现电磁铁的最大磁场，特制的三维支架可实现样品的三维精密移动，是显微磁光测试的首选。

原子力显微镜(AFM)&扫描近场光学显微镜(SNOM)形貌

ARS 公司推出了一款专门替代液氦制冷的低温AFM/SNOM 平台的超级优越的经济型无液氦解决方案。