DiffusIR – Research Grade Diffuse Reflectance Accessory

Description

The PIKE Technologies DiffusIR™ is a research grade diffuse reflectance accessory with a large, efficient optical design accommodating the optional PIKE Technologies environmental chambers. These specialized chambers can be used to study thermodynamic properties of materials, determine reaction mechanisms, perform catalytic studies and much more.

The heart of the DiffusIR is a unique monolithic ellipsoidal reflector permanently fixed in place – eliminating the need for repositioning the focus optics for sample placement. The DiffusIR optical design is optimized to efficiently collect diffuse radiation generated from the sample and minimize the effects of the specular radiation component.
With the DiffusIR, sample introduction is performed using an integral 2 position slide – enabling background and sample spectra to be collected without loss of purge. The sample height can be optimized by using the micrometre sample focusing adjustment.

In this manner the sensitivity of the accessory is maximized without sacrificing precision. The DiffusIR comes equipped with a Sample Preparation and Loading Kit and a Sample Abrasion Kit for the analysis of intractable samples. The DiffusIR optics are enclosed and equipped with purge tubes for the elimination of atmospheric interferences.

The PIKE Technologies environmental chambers can be operated at temperatures ranging from -150 to 900 degC and at pressures up to 1500 psi. The optional chambers are easily inserted and removed from the DiffusIR using push lock pins.

Coupling the DiffusIR and environmental chambers with the PIKE PC Controlled Temperature Module and TempPRO™ software provides the ability to graphically set up the experiment with up to 3 ramps and data collection initiated at specified time or temperature values.

Advanced temperature studies of materials in controlled environments can be done using the PIKE environmental chambers. A special version of the DiffusIR with gold-coated optics is available for maximum mid-IR performance and for NIR diffuse reflectance sampling. The DiffusIR and its options are compatible with most FTIR spectrometers.

Thermal transformation of hydrated inorganic compound measured with DiffusIR with environmental chamber. Spectra automatically collected between 80 and 160 degC at 5 degree increments using PIKE TempPRO software.

Spectrum of Ottawa sand measured with the DiffusIR

• Large, highly efficient collection optics for maximum sensitivity and detection limits
• Micrometre controlled sample focus to optimize results for every sample
• Optional environmental chambers for heating, cooling, high vacuum and high pressure applications
• Quick release feature of environmental chambers for easy insertion and removal of sealed chambers
• Digital PC controller option for macro control of data collection at user specified temperatures or times
• Sealed and purgeable optical design to eliminate water vapor and carbon dioxide interference