EGU21-13341, updated on 04 Mar 2021
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Experiences on production - usage reasoned malfunctions & development of  X-ray tubes used in science and their effects on sediment measurements

Dursun Acar1,2, Namık Çagatay2, Ş. Can Genç3, K. Kadir Eriş2,3, Demet Biltekin1,2, and Nurettin Yakupoğlu2,3
Dursun Acar et al.
  • 1Istanbul Technical University, Eurasia Institute of Earth Sciences, Ayazaga Campus, Maslak, Sarıyer, 34469, Istanbul/Turkey (
  • 2Istanbul Technical University, Faculty of Mine, EMCOL, Ayazaga Campus, Maslak, Sarıyer, 34469, Istanbul/Turkey
  • 3Istanbul Technical University, Faculty of Mine, Department of Geological Engineering, Ayazağa Campus, Maslak, Sarıyer, 34469, Istanbul/Turkey

Surface fractures at the filament of X-ray tube increase more with metal fatique or wrong cooling  and heating processes. Fractured filament continue to work as repeating open circuit positions in random times with  turning fully conductive state in short time. We are explaining how open circuit flashes at the filament providing wrong measurement results. Their low voltage electric circuit conductive problems  repeat in milliseconds periods. At  the results, it gives the impression of healthy measurement values. Because that the measured sample absorbs photonic energy and direct it to neighbouring elements in continuous element  electron scattering  circulations , by the way that delayed secondary electron energy scatters hide all electron supply extinctions on the semi broken flament wire and indirect counts  continue by the detector from coming reflection energy. ( real counts are not from exact beam  target of sample surface during energy deprivations , and it is impossible to understand that the measurement is inaccurate because it causes similarity as discrete element counts in sedimentation layers ).  Filament voltage arcs do not warn machine with error reporting systems until to whole ruptured filament touch to anode walls or their far displaced edges of 2 broken filament positioning. Erroneous records take their place in the world of science if the lithology was not followed. We collected faulty measurement data from our experiences for indicate when and  how possible to facing such as events.

For eliminate  explained reasons at above , the tubes must be gently heated and  cooled. Excessive cooling or heating of the tubes or oxid placement and leakeage  at gasget contacts reduces the surface contact areas of the insilators with the corrosion by  condensing water around the rubber insulation gasgets , it causes cooling liquid leakage or increasing humidity at the tube housing block via following serial failures of HV unit such as increasing amounts of the broken tube events. During the replacement of insulating gasgets, enough care should be taken for gasket contact points as oiling  them with  silicone grease as a form of the thin film. High responsibility must be with continuous  result control  and reference correlations on the scientific sample. With this way we can eliminate possible  negative results by malfunctions on measurements.

How to cite: Acar, D., Çagatay, N., Genç, Ş. C., Eriş, K. K., Biltekin, D., and Yakupoğlu, N.: Experiences on production - usage reasoned malfunctions & development of  X-ray tubes used in science and their effects on sediment measurements, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-13341,, 2021.

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