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  • In this work we have used optical emission spectroscopy to measure the (2-0) 1st positive system emission in nitrogen DC discharge at pressure p=1000 Pa, for discharge currents in the range I=50-200 mA, in a Pyrex tube with internal diameter (2R)=13 mm. It is shown that an important difference in behaviour occurs when the discharge current is increased from 50 to 70 mA. As a matter of fact, at 50 mA the pink-afterglow, characterized by the raise in the optical emission after a dark zone, does not exist, only the well known yellow-afterglow being visible. The former is a result of the vibration-vibration (V-V) up-pumping followed by vibration-to-electronic (V-E) energy exchanges, whereas the latter is a result of 3-body N-atom recombination. However, for 70 mA and higher currents the pink-afterglow exists and gets more noticeable as the current increases.
  • In this work we have used optical emission spectroscopy to measure the (2-0) 1st positive system emission in nitrogen DC discharge at pressure p=1000 Pa, for discharge currents in the range I=50-200 mA, in a Pyrex tube with internal diameter (2R)=13 mm. It is shown that an important difference in behaviour occurs when the discharge current is increased from 50 to 70 mA. As a matter of fact, at 50 mA the pink-afterglow, characterized by the raise in the optical emission after a dark zone, does not exist, only the well known yellow-afterglow being visible. The former is a result of the vibration-vibration (V-V) up-pumping followed by vibration-to-electronic (V-E) energy exchanges, whereas the latter is a result of 3-body N-atom recombination. However, for 70 mA and higher currents the pink-afterglow exists and gets more noticeable as the current increases. (en)
Title
  • The Importance of the Discharge Current in the Formation of the Pink Afterglow of a Nitrogen DC Discharge
  • The Importance of the Discharge Current in the Formation of the Pink Afterglow of a Nitrogen DC Discharge (en)
skos:prefLabel
  • The Importance of the Discharge Current in the Formation of the Pink Afterglow of a Nitrogen DC Discharge
  • The Importance of the Discharge Current in the Formation of the Pink Afterglow of a Nitrogen DC Discharge (en)
skos:notation
  • RIV/00216305:26310/09:PU84033!RIV10-GA0-26310___
http://linked.open...avai/riv/aktivita
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  • P(GA202/08/1106), P(GD104/09/H080)
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  • 318791
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  • RIV/00216305:26310/09:PU84033
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  • nitrogen pink afterglow, numeric simulation, optical emission spectroscopy (en)
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  • [A3A8D00C6B97]
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  • Sofia
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  • Sofia
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  • Proceedings of 36th European Physical Society Conference on Plasma Physics
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  • Krčma, František
  • Soural, Ivo
  • Guerra, Vasco
  • Lino da Silva, M.
  • Sá, Paul
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http://linked.open.../riv/zahajeniAkce
number of pages
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  • EPS
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  • 2-914771-61-4
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  • 26310
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