GDS Series
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GDS Series Glow Discharge Spectroscopy EMPOWERING RESULTS

Glow Discharge Spectroscopy LECO's Glow Discharge Spectrometers are the clear choice of leading companies around the world, providing the most accurate bulk analysis, as well as quantitative depth profiling for a wide variety of sample matrices and applications. Delivering customers a true turn-key solution, LECO Glow Discharge Spectrometers (GDS) are configured and calibrated at the factory, in order to provide a custom analytical tool optimized to your sample matrices. Due to the robust nature of the system, samples can be analyzed immediately after installation. Only LECO provides this...

The signature "sputter spot" from glow discharge spectrometry shows uniform sample removal and provides the large representative area needed for accurate sampling of bulk content and depth profile information. Competitive methods cannot provide this quality of data because of their random sampling processes. The cathodic sputtering process of the Grimm-type lamp is created by applying a controlled voltage, current, and argon pressure to the sample surface. The diagram below details the excitation and emission of the sample atoms in the argon plasma. Reduced line interferences by glow...

Instrument Highlights and Features Glow Discharge Source Advantages • Simple, Linear Calibrations: GDS provides narrow emission lines, less interference, increased dynamic range, and less complex spectra when compared to other sources. • Controlled Excitation: GDS provides a non-thermal source to uniformly remove sample material from the surface. Excitation of the sample occurs away from the surface, reducing chemical and metallurgical effects. Very little sample-to-sample carryover allows quick matrix changes. Uniform sample excitation offers improved precision. • Interchangeable Anodes:...

The Power of Glow Discharge Spectrometry DC/RF Lamp Standard lamp on both the GDS900 and GDS950. The DC lamp supports electrically conductive sample analysis, both bulk and CDP applications, but is not applicable to electrically non-conductive materials. The DC is the optimal lamp for electrically conductive samples like metals. The DC/RF combination lamp is optional on the GDS950 and not available with the GDS900. The DC/RF lamp supports not only the analysis of electrically conductive materials in both DC and RF modes, but also supports the analysis of electrically non-conductive...

Bulk Elemental Analysis Unlike other methods, GDS can handle your bulk applications like sheet, powder, fastener, pressed, and mounted samples. Even small samples like wire (0.25 mm diameter) can be accurately tested. Thin sheets (down to 0.02 mm in thickness and even thinner) may be successfully analyzed using a backplate and cooling puck. Just about any sample form can be characterized by glow discharge technology. The flexibility of LECO instruments allows you to easily add depth profiling capabilities as your needs change. Bulk Applications LECO delivers a fully calibrated instrument...

Compositional Depth Profiling (CDP) CDP is an ideal method for early identification of potential problems with your materials (including coatings, layers, and thermochemical treatments). Why use GDS? The GDS technique can perform a depth profile analysis continuously from nanometers to —100 pm. Combined with a fast sputtering rate (0.5 pm to 30 pm/min.), GDS provides the complete chemical composition (ppm to 100%) from the surface to the substrate in only a few minutes. All elements are acquired simultaneously, increasing sample throughput while minimizing cost-per-analysis. CDP...

Meeting production, process, and research requirements. Hard Disk Surface Evaluation Hard disk drives consist of one or more non-magnetic platters that are coated with a thin layer(s) of magnetic material, with an outer diamond like carbon layer for protection. These layers vary in chemistry and capacity by manufacturer and range from 10-20 nm in depth. GDS CDP supports the determination of layer composition, magnetic layer thickness, protective layer thickness, substrate chemistry, and more in seconds. Galvanized Sheet Evaluation Galvanization is a common and relatively inexpensive method...

Software Features & Benefits Cornerstone® brand software is divided into four main sections—Analysis, Diagnostics, Settings, and Instrument—for simplified navigation and organization. Toolbars, sliders, and drop-down menus make it easy to set parameters for calibration and data processing. The software also included real-time monitoring of ambient monitors, with fully animated system diagrams. Advanced diagnostic features include a thorough digital on-board manual, maintenance animations, photo illustrations, and screen captures that quickly provide the direction needed without having to...

Packages LECO glow discharge spectrometers are split into two different series, each with a selection of additional options to help the analyst better tailor the system to their individual needs. The GDS900 supports electrically conductive samples only, has a lower resolution than the GDS950, and a narrower wavelength range. The GDS950 supports both electrically conductive and non-conductive samples, has a higher resolution for enhanced peak separation, and a wider wavelength range. Both systems support bulk analysis, optional compositional depth profiling analysis, optional extension...

Optional Accessories Enhance the ergonomics of the system with the choice of an optional integrated desk or mobile workstation. Use genuine LECO consumables for optimal GDS performance. These include the anode, reamer assembly, insulating sleeve, and o-ring in the lamp assembly. The spectrometer box gas recirculator requires reagents used to purify the purge gas, including anhydrone, LECOSORB®, and copper sticks. Vacuum Pump Sound Enclosure Optional vacuum pump sound abatement enclosure reduces ambient noise from vacuum pump by ~7 dBa. High Purity Gas Cylinder Regulators LECO Corporation...