Thermal Desorption Spectrum

This more involved example is a key use-case for the code.

This procedure aims to model the experiential work of Ogorodnikova et al. Ogorodnikova et al. (2003).

The original experiment Ogorodnikova et al. (2003) involves a thin tungsten foil $var element = document.getElementById("moose-equation-a0eadc55-5e9b-4c8e-bae6-f71828552b78");katex.render("12 \\times 15 \\times 0.5 \\: \\text{mm}^3", element, {displayMode:false,throwOnError:false});$ . The foil is exposed to a beam of 200 eV deuterium ions during an initial implantation phase which lasts 400 s. This is followed by a resting phase of approximately 5 minutes at a constant temperature of 300 K. Finally, the rate of desorption of hydrogen from the foil is measured as the temperature is slowly increased at a constant rate of 8 K/s.

Figure 1: Thermal Desorption Spectrum

References

O.V Ogorodnikova, J Roth, and M Mayer. Deuterium retention in tungsten in dependence of the surface conditions. Journal of Nuclear Materials, 313-316:469–477, 2003. Plasma-Surface Interactions in Controlled Fusion Devices 15. URL: https://www.sciencedirect.com/science/article/pii/S0022311502013752, doi:https://doi.org/10.1016/S0022-3115(02)01375-2.

@article{OGOROD2003,
    author = "Ogorodnikova, O.V and Roth, J and Mayer, M",
    title = "Deuterium retention in tungsten in dependence of the surface conditions",
    journal = "Journal of Nuclear Materials",
    volume = "313-316",
    pages = "469-477",
    year = "2003",
    note = "Plasma-Surface Interactions in Controlled Fusion Devices 15",
    issn = "0022-3115",
    doi = "https://doi.org/10.1016/S0022-3115(02)01375-2",
    url = "https://www.sciencedirect.com/science/article/pii/S0022311502013752",
    keywords = "Deuterium, Tungsten, Retention, Implantation",
    abstract = "The paper reviews hydrogen isotope retention and migration in tungsten (W). Due to a large scatter of the deuterium (D) retention database, new measurements of ion-driven D retention in polycrystalline W foil have been performed to clarify the mechanism of hydrogen isotope inventory in W. Deuterium retention has been investigated as a function of ion fluence, implantation temperature, incident energy and surface conditions. Special attention has been given on the investigation of D retention in thin films of tungsten carbide and tungsten oxide which can be formed on W surface in a fusion device. Such kinds of films increase the D retention in W. Several points are reviewed: (i) inventory in pure W, (ii) inventory in W pre-implanted by carbon ions and (iii) inventory in tungsten oxide."
}

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