The One20DAC has been designed with the largest aperture available on the market in mind for X-ray and optical spectroscopy.

By providing a physical angle of 120 degrees on both sides of this diamond anvil cell, it makes it particularly suitable for Single Crystal X-ray diffraction as it enables to have access to a very large reciprocal space unequalled whilst carrying out measurements under pressure. When used for optical spectroscopy, the One20DAC is also particularly attractive for Brillouin spectroscopy  as the large aperture gives a wide scattering angle and improved resolution of Brillouin spectra.

The One20DAC uses a combination of large 4.00mm Boehler-Almax anvils supported by thin WC conical seats. This feature provides the 120 degrees physical aperture of this cell. X-ray characterisation of the cell on a beamline has shown that the effective aperture of the cell with a gasket is a very impressive 112 degrees (courtesy of James Walsh-Steve Jacobsen – Norhtwestern University, IL, USA).

In turn, this combination gives the benefit of a very thin DAC, making it particularly suited to environment where space is at a premium such as on a beamline. The thickness of the One20DAC is approximately 17 mm. The working distance is also very short, in turn providing a large NA of 0.87 for optical measurements and observation.

The alignment of the diamond anvils is achieved by a combination of high precision machining of the parts and some lateral adjustment screws for both bottom and top seats.

Finally the pressure is increased via some left handed (x2) and right handed (x2) screws pressing on a stack of loading springs providing a smoother control of the force applied on the diamonds.

Applications

This cell is ideal for X-ray diffraction and related work.  The DAC is supplied with a 3.1mm mounting pin that is compatible with most commercially available goniometer heads, such as those from Huber.