Applicability of the dielectric barrier discharge for helium ash measurements in the divertor region

• Autorzy: Książek I. , Brosławski A. , Janus H. , Pawelec E.

Identyfikatory

DOI

10.1515/nuka-2016-0017

• Konferencja: PLASMA-2015 International Conference on Research and Applications of Plasmas (7-11 September 2015 ; Warsaw, Poland)
• Języki publikacji: EN

Abstrakty

EN

Controlled fusion based on the magnetic confinement of the plasma is one of the main aims of the Eurofusion programme. In the fusion device, the hydrogen isotopes, in nuclear reactions, will produce helium nuclei. The products, as the ash, will be removed from the plasma in the region of the so-called divertor. Controlling the helium to hydrogen ratio in this ‘exhaust gas’ will provide information about the efficiency of the fusion process as well as of the efficiency of the helium removal system. One of the methods to perform this task is to study the properties of the discharge conducted in such exhaust gas. In this paper, the applicability of the dielectric barrier discharge (DBD) is studied. This preliminary experiment shows a great potential in applicability of this kind of discharge. The optical as well as pulse-height spectra were studied, both revealing very promising properties. In the optical spectrum, one can observe well separated hydrogen and helium spectral lines, with intensities of the same order of magnitude. Moreover, in the registered spectral region, the molecular spectra are negligible. The pulse-height spectra reveal very distinct shape in helium and hydrogen. Checking of this spectrum could provide parallel (redundant) information about the partial pressure of helium in the magnetic confinement fusion (MCF) device exhaust gas.

Słowa kluczowe

EN

dielectric barrier discharge (DBD); low pressure discharge; fusion plasma

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2016
• Tom: Vol. 61, No. 2
• Strony: 99--102
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Książek I.

• Institute of Physics, Opole University, 48 Oleska Str., 45-052 Opole, Poland, Tel.: [phone], Fax: [phone]

autor

Brosławski A.

• Institute of Physics, Opole University, 48 Oleska Str., 45-052 Opole, Poland, Tel.: [phone], Fax: [phone]

autor

Janus H.

• Institute of Physics, Opole University, 48 Oleska Str., 45-052 Opole, Poland, Tel.: [phone], Fax: [phone]

autor

Pawelec E.

• Institute of Physics, Opole University, 48 Oleska Str., 45-052 Opole, Poland, Tel.: [phone], Fax: [phone]

Bibliografia

• 1. Finken, K. H., Dippel, K. H., Baek, W. Y., & Hardtke, A. (1992). Measurement of helium gas in a deuterium environment. Rev. Sci. Instrum., 63(1), 1–7.
• 2. Denner, T., Finken, K. H., & Mank, G. (1996). Helium partial pressure measurement in a deuterium environment. Rev. Sci. Instrum., 67(10), 3515–3520.
• 3. Kogelschatz, U. (2003). Dielectric-barrier discharges: Their history, discharge physics and industrial applications. Plasma Chem. Plasma Process., 23(1), 1–46.
• 4. De Geyter, N., Morent, R., & Leys, C. (2006). Surface modification of a polyester non-woven with a dielectric barrier discharge in air at medium pressure. Surf. Coat. Technol., 201, 2460–2466.
• 5. Morent, R., De Geyter, N., Leys, C., Gengembre, L., & Payen, E. (2007). Surface modification of non-woven textiles using a dielectric barrier discharge operating in air, helium and argon at medium pressure. Text. Res. J., 77(7), 471–488.
• 6. Fridman, G., Peddinghaus, M., & Ayan, H. (2006). Blood coagulation and living tissue sterilization by floating-electrode dielectric barrier discharge in air. Plasma Chem. Plasma Process., 26, 425–442.
• 7. Eto, H., Ono, Y., & Ogino, A. (2008). Low-temperature internal sterilization of medical plastic tubes using a linear dielectric barrier discharge. Plasma Process. Polym., 5(3), 269–274.
• 8. Kusz, J. (1992). Intensities and transition probabilities for selected DyI and DyII lines emitted from a ferroelectric plasma source. Astron. Astrophys. Suppl. Ser., 92, 517–532.
• 9. Goly, A., Kusz, J., Nguyen Quang, B., & Weniger, S. (1991). Transition probabilities of PrII-lines emitted from a ferroelectric plasma source. J. Quant. Spectrosc. Radiat. Transfer, 45(3), 157–163.
• 10. Kogelschatz, U. (2010). Collective phenomena in volume and surface barrier discharges. J. Phys. Conf. Ser., 257, 1–12. DOI: 10.1088/1742-6596/257/1/012015.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.