Measurements of the glass-to-plasma boundary-layer influence on continuum radiation in a T-tube |
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| Affiliation: | 1. Physical Geography, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia;2. Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade, Serbia;3. Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;4. CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China;5. University of Chinese Academy of Sciences, Beijing 100049, China;6. Department of Geography, University of Wisconsin, Madison 53706, United States;1. Faculty of Technical Sciences, University of Novi Sad, Trg D. Obradovića 6, 21000 Novi Sad, Serbia;2. Department of Image Processing and Computer Graphics, University of Szeged, Árpád tér 2, H-6720 Szeged, Hungary |
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| Abstract: | The influence of the glass-to-plasma boundary layers on the continuum radiation of hydrogen plasma has been experimenally checked at the Hβ wavelength by introducing an additional number of boundary layers into the observed plasmas produced inside of a T-shaped electromagnetic shock tube. In the first case (case A), the plasma was observed (by using a monochromator) with the two usual boundary layers. In the second case (case B), four additional boundary layers were created by introducing two glass plates into the plasma. During the first microsecond, after the reflected shock front had passed the point of observation, no major differece was noted between the continuum intensities in cases A and B. At 1.5 μs and later, the difference amounted to about 10 to 20% with case B being more intense, depending on time, that is on the plasma parameters and boundary-layer thickness. |
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