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GDOES
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Save time and money with Spectruma Analytik's GDOES devices, designed to meet all your analytical needs. Thanks to feedback from our customers, we’ve become a trusted leader in GDOES spectrometry. Whether you’re inspecting incoming goods, monitoring production, ensuring industrial quality control, or conducting scientific research, we have the perfect solution for you. Our high-performance GDOES spectrometers provide fast, precise measurements for bulk and depth profile analysis of solid materials. Join users worldwide who rely on our instruments every year for accurate, reliable results tailored to their applications.
GDOES – Briefly Explained
Simplified Operating Principle
The sample is inserted into the glow discharge source, where it comes into direct contact with the cathode, effectively acting as a cathode itself.
During the analysis, the glow discharge source contains argon gas at low pressure (0.5 hPa to 10 hPa). A high DC voltage is applied between the anode and the sample (acting as the cathode). This process releases electrons at the sample's surface and accelerates them towards the anode.
As the electrons gain kinetic energy, they release it through inelastic collisions with argon atoms, resulting in ionization of the argon atoms and the formation of argon cations and free electrons. This avalanche effect increases the density of charge carriers, transforming the insulating argon gas into a conductive state and forming a plasma—a mixture of neutral gas atoms and free charge carriers.
The argon cations are driven towards the sample surface due to the high negative potential present there. Upon impact with the sample surface, the argon cations transfer their kinetic energy to the atoms on the surface, causing them to be dislodged from the sample. This phenomenon is known as cathode sputtering or simply sputtering. The degradation of the sample surface occurs in a plane-parallel manner.
The atoms knocked out from the sample diffuse into the plasma, where collisions with high-energy electrons excite them to higher energy states. As these atoms return to their ground states, they emit light with characteristic wavelength spectra unique to each element.
The emitted light passes through the entrance slit and then onto a holographic grating, which directs it towards different detectors based on the diffraction angle of the wavelengths. The light is registered and measured by the detectors accordingly.
The intensity of each line is directly proportional to the concentration of the corresponding element in the plasma. For electrically non-conductive materials, high-frequency alternating voltage can be employed to generate plasma, allowing examination of non-metallic samples as well.
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Spectruma News
WinGDOES
Software WinGDOES 5.6
WinGDOES 5.6 is now available! With even more features and improvements, our latest software version offers an even more efficient and user-friendly experience. Update now and take advantage of the new possibilities!
next EW-GDS meeting in Antwerp
7th International Glow Discharge Spectroscopy Symposium in Belgium (Kopie)
The EW-GDS are pleased to announce that registration for the 7th International Glow Discharge Spectroscopy Symposium (IGDSS2026) is now open.
IGDSS2026 will take place in Antwerp, Belgium, from 19th to 22nd April 2026, and you can see more details at www.ew-gds.com/forthcoming-events where you will find a link to the registration page. Or you can go straight to the registration page by clicking on Registration
If you register before the end of December 2025 then the “Early Bird” registration fee will apply; after that date there will be an increase.
If you are new to GDS and not sure if the symposium is relevant for you, then go to https://www.ew-gds.com/igdss-meetings/ and you can look at the prospectus from all the previous meetings, including abstracts of the talks and posters.
So, register now to ensure your place on this popular and valuable opportunity to meet with colleagues from within your field. You can contact the chairman of the EW-GDS Peter Robinson pete@masscare.co.uk for further information.
Hope to see you in Antwerp!!
The meeting will take place in the Zoo of Antwerp
Training date 1
16. of September to 17. of September 2025 at Spectruma company Hof, Germany. Please click here to sign up.
Innovative Techniques for Accurate Hydrogen Analysis and Material Safety
Hydrogen Detection in Materials with GDOES
Discover how Glow Discharge Optical Emission Spectroscopy (GDOES) offers unparalleled sensitivity for detecting hydrogen, an element crucial for preventing material fatigue due to hydrogen embrittlement.
WinGDOES
Software WinGDOES 5.5
WinGDOES 5.5 is now available! With even more features and improvements, our latest software version offers an even more efficient and user-friendly experience. Update now and take advantage of the new possibilities!
Spectruma
For over 40 years, Spectruma® has been at the forefront of manufacturing and developing high-tech instrumentation for elemental analysis. Our exceptionally powerful method, glow discharge optical emission spectrometry (GD-OES), enables precise bulk analysis of almost all elements, including H, C, N, and O. Simultaneously, it provides the highest depth resolution for depth profile analysis of surface layers.
