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Diacell®Bragg-(S) Plus

X-ray Spectroscopy, Pmax = 100 GPa, T = 300 K, WD = 14 mm, A = 85°

Diacell® Bragg Series

  • The Diacell® Bragg-(S) Plus uses conical Boehler-Almax anvils, making this DAC ideal for high pressure X-ray research
  • The large angle apertures enable diffraction studies with high transmission factor and very low background
  • The Diacell® Bragg-(S) Plus also lends itself to optical experiments at high pressures
  • A combination of left- and right-handed screws makes sure that there is no net torque on the cell
  • Maximum pressures of about 100 GPa may be obtained with the Diacell® Bragg-(S) Plus

SKU: A60001

For more info, quotation or call: Contact us

Description

The very ingenious Diacell® Bragg-(S) was the first device designed by Diacell specifically for X-ray diffraction applications. Using a screw drive mechanism and 200 μm anvil culets, pressures up to 95 GPa are achieved.  This cell was later upgraded to the Bragg-(S) Plus that incorporates conical anvils. This means that the beryllium support plates found on the conventional Bragg-(S) cell were replaced by tungsten carbide ones in the Bragg-(S) Plus.

The Bragg-(S) Plus is one of the most popular diamond anvil cells within our product portfolio.

The diamond anvil height is kept at the minimum possible for the pressure range in order to reduce absorption. Anvil alignment is achieved using a hemisphere and cup arrangement in the piston, and is maintained by means of a very high precision piston-cylinder fit. All cells are delivered fully aligned and ready for use.

In the Diacell® Bragg-(S) Plus load is applied by means of two bolts, one of which has a left-handed thread. This arrangement allows a symmetrical load to be applied to the anvils, whilst no net torque is put on the device. Accordingly, pressure on the sample may be adjusted whilst the cell is on its arcs.

Naturally, it is also possible to convert a Bragg-(S) to a Bragg-(S) Plus (and vice-versa) by replacing the hemisphere, lower plate, anvil support plates and anvils.  Please enquiry for more details.

Applications

The particular challenge of X-ray diffraction applications is to combine such conditions with the ability to observe diffracted radiation over a wide 2θ range. Moreover, due to the increasingly widespread use of image plates, and other high-performance X-ray area detectors, it is essential to be able to observe the entire 2θ cone of diffracted radiation. Weak reflections which are otherwise undetectable have thereby revealed hitherto unsuspected supercells and structures. Almax easyLab offers cells which go far towards meeting these demanding criteria. Based upon extensive finite element stress calculations, and many years of hands-on experience and practical development, these devices are manufactured to exacting standards, using carefully selected materials. The cells are suitable for use on diffractometers and most other types of X-ray equipment, with both standard tube and synchrotron X-ray sources. Single-crystal and powder samples are equally appropriate.

Specifications

Cell Material AISI 440C
Anvil Design Boehler-Almax
Anvil Support Plate Tungsten Carbide
Pressure Mechanism Screw Driven
Maximum Pressure  > 100 GPa
Temperature Range Room Temperature
Top Angle X-Ray: conical 85º
Bottom Angle X-Ray: conical 85º
Lateral Access 12° of 2θ is accessible
Heating N/A
Cooling N/A
DAC Diameter N/A
DAC Height ~35 mm
Working Distance to Sample 14 mm
Numerical Aperture 0.67
DAC Weight 300 g

Maximum pressure is dependent upon the culet size of the anvils. Almax easyLab is committed to its policy of continuous improvement. Specifications may change without notice. easyLab and Diacell are registered trademarks of Almax easyLab.

Documents

We have compiled a series of technical documents (brochures, articles, technical drawings, …) which you might find useful to help you understand this product better.

Technical documentation

Brochure-Bragg-S-and-Bragg-S Plus

Technical Drawing

Please contact us for further details on the engineering drawings.

Articles

2013 – Lapidus et al – Exploiting High Pressures to Generate Porosity, Polymorphism, And Lattice Expansion in the Nonporous Molecular Framework Zn(CN)2

2006 – Bovornratanaraks et al – Complex monoclinic superstructure in Sr-IV

2008 – Evans, J – Molecular sponges

Spares, Accessories and Options

Our diamond anvil cells are aligned and mechanically tested before leaving our factory on their way to your laboratory.

They also come supplied with the required basic tooling, including gasket blanks, to use them. All is contained in the transportation casing to move around laboratories easily.

Below you can find some of the accessories and spares you might also consider. If you cannot find what you need, please do not hesitate to contact our team.

Diamond Anvils
2.5 mm Diacell® design diamond anvil for Bragg-(S) diamond anvil cell
Product code: [P00131]
Anvil Support Plate
Be seat, domed, 20° aperture for Bragg-(S) diamond anvil cell
Product code: [P00136]
Diamond Anvils
3.30 mm – 85° Boehler–Almax design diamond anvil for Bragg-(S) Plus diamond anvil cell
Product code: [P00539]
Anvil Support Plate
Tungsten carbide seat (KXF), with 85° conical aperture for Bragg-(S) Plus diamond anvil cell
Product code: [P00826]
Conversion kit 
Upgrade kit from Bragg-(S) to Bragg -(S) Plus
Product code: [A60002]
Gasket Blanks
10 mm diameter and 0.25 mm thick, stainless steel gasket blanks
Product code: [P00113]

FAQs

What is the maximum pressure I can achieve with the Bragg-(S)/Bragg-(S) Plus and a given culet size?

Culet size (µm) 200 300 400 500 600 800 1000
Bragg-(S) Pmax (GPa) (*) N/A 74 48 31 21 12 8
Bragg-(S) Plus Pmax (GPa) (*) 114 98 63 41 28 16 10

(*) The Pmax values are only indicative. The maximum pressure achievable with a DAC is influenced by many others experimental parameters, like the gasket characteristics (material, thickness and hole size) or the pressure transmitting medium.

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