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PKE-Nefedov Symposium - 2004

PKE-Nefedov Symposium - 2004. Optical Diagnostics of Discharge Plasma in PK-4 Project. Alexander Usachev. Institute for High Energy Densities of RAS. Objectives:. 1. Diagnostics of concentrations of excited neon atoms. 2. Developing of combined diagnostic probe-optic methods.

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PKE-Nefedov Symposium - 2004

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  1. PKE-Nefedov Symposium - 2004 Optical Diagnostics of Discharge Plasma in PK-4 Project Alexander Usachev Institute for High Energy Densities of RAS

  2. Objectives: 1. Diagnostics of concentrations of excited neon atoms. 2. Developing of combined diagnostic probe-optic methods. 3. Control of plasma impurities. Institute for High Energy Densities of RAS

  3. Optical Diagnostics of Plasma in PK-4 Project Glow Image Diagnostics Spectral Diagnostics Institute for High Energy Densities of RAS

  4. Glow Image Diagnostics Phantom-5  = 1 Institute for High Energy Densities of RAS

  5. The spectral transmittance of the PK4-chamber glass. Institute for High Energy Densities of RAS

  6. k i In the case of Te= const, 0 Emission Intensity of Ne Institute for High Energy Densities of RAS

  7. Scale mm Intensityvs Electron Density in DC-mode Ne: 50 Pa Institute for High Energy Densities of RAS

  8. Intensityvs Electron Density in DC/RF(i)-mode Institute for High Energy Densities of RAS

  9. IntensityDistribution in 2RF(i)-mode

  10. Temporal Behavior of DC Discharge 20000 fps  20 fps 10 Pa 50 Pa 300 Pa Institute for High Energy Densities of RAS

  11. Spectral Diagnostics: 1. Emission spectroscopy: measurements of concentration of highly excited neon atoms. 2. Absorption spectroscopy: measurements of concentration of metastable and resonance neon atoms. 3. Emission spectroscopy: control of plasma impurities. Institute for High Energy Densities of RAS

  12. Emission spectroscopy: measurements of concentration of highly excited neon atoms by the method of absolute intensities Institute for High Energy Densities of RAS

  13. Emissive spectrum of Ne in DC discharge: 3 mA; 50 Pa. 2p  1s 3p  1s Institute for High Energy Densities of RAS

  14. Emission spectroscopy: measurements of concentration of highly excited neon atoms by the method of absolute intensities Institute for High Energy Densities of RAS

  15. Absolute concentrations of 2p and 3p levels of neon in RF(i) discharge at 10, 100 and 1000 Pa. 1000 Pa 100 Pa 10 Pa 2p-levels 3p-levels Institute for High Energy Densities of RAS

  16. Local Thermal Equilibrium of 2p-levels of Neon in RF(i) discharge at 10, 100 and 1000 Pa p=1000 Pa p=100 Pa p=10 Pa Institute for High Energy Densities of RAS

  17. PC CM SM Absorption spectroscopy: measurements of concentration of metastable and resonance neon atoms by the method of one mirror. Mirror Chopper PK4 chamber Lens C Spectrometer translation CM PMT High voltage Institute for High Energy Densities of RAS

  18. Measurements of concentration of metastable and resonance neon atoms by the method of one mirror. Institute for High Energy Densities of RAS

  19. U2 U1 Typical Spectrogram. R=0.92 For Doppler shape of line: Institute for High Energy Densities of RAS

  20. Population of 1s-Levels vs Direct Current (at 50 Pa) IDC = 5 mA IDC = 15 mA IDC = 1 mA Institute for High Energy Densities of RAS

  21. Total Density of Ne-3S Atoms vs Direct Current Institute for High Energy Densities of RAS

  22. m m m r r r m m m r r r m m r Population of 1s Levels vs Ne Pressure p = 50 Pa p = 12 Pa p = 25 Pa p = 100 Pa Institute for High Energy Densities of RAS

  23. Emission spectroscopy - Diagnostics of Gas Mixtures: 1. Ne + 2%Xe. 2. Ne + O2. 3. Ne + Air Leakage. Institute for High Energy Densities of RAS

  24. Emission Spectra of pure Ne and Ne+2%Xe-mixture 50 Pa of Ne, 3 mA_433V Ne(2p  1s) 50 Pa of Ne+2%Xe, 3 mA_400V Xe(2p  1s) Institute for High Energy Densities of RAS

  25. Reference Spectra of Pollutants: O2 and N2 O2 H N2 Institute for High Energy Densities of RAS

  26. UV Reference Spectra of Pollutants: O2 and N2 O2 Used O2-band N2 Institute for High Energy Densities of RAS

  27. OH Spectra of Pollutant H2O Old Ne balloon N2 OH New Ne balloon N2 Institute for High Energy Densities of RAS

  28. Emission Spectra of pure Ne and Ne+0.05%O2, Ne+0.15%O2-mixtures Ne Ne+0.05%O2 Ne+0.15%O2 N2-band N2-band N2-band O2-band O2-band Institute for High Energy Densities of RAS

  29. Comparison of Spectroscopic and Probe Data for Ne, Ne+0.05%O2and Ne+0.15%O2-mixtures ne INe E IO2 Institute for High Energy Densities of RAS

  30. Spectral Intensities of Ne, N2 and O2 vs Air Addition Ne Ne Ne N2 N2 N2 N2 N2 N2 Ne Ne Ne O2 O2 Institute for High Energy Densities of RAS

  31. Comparison of Spectral and Probe Data Drifts at Air Leakage N2 Ne O210 Institute for High Energy Densities of RAS

  32. Conclusion: 1.. 2.. 3.. Institute for High Energy Densities of RAS

  33. Thank you for your attention

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