28 August 2022 to 1 September 2022
Serbian Academy of Sciences and Arts – SASA
Europe/Belgrade timezone

Determination Of The Temperature Distribution In The Cathode Sheath Region Of Hydrogen Glow Discharge Using R-Branch Of Fulcher-$\alpha$ Band

S08-PGDP-201
29 Aug 2022, 19:29
1m
Restaurant (Serbian Academy of Sciences and Arts - SASA)

Restaurant

Serbian Academy of Sciences and Arts - SASA

Board: S08-PGDP-201
Poster presentation S08 Plasma and Gas-Discharge Physics Poster session

Speaker

Prof. Gordana Majstorovic (University of Defence, Military Academy)

Description

Optical emission spectroscopy technique was used to measure rotational and gas temperature distribution in the cathode-sheath region of an abnormal glow discharge operated in hydrogen. The rotational temperature of excited electronic states of H2 was determined from the relative line intensities of the R-branch of the Fulcher-$\alpha$ diagonal band $d^3\Pi_u^+, \nu' = 0 \rightarrow a^3\sum_g^+, \nu'' = 0$ and compared with published results for the Q-branch of the Fulcher-$\alpha$ diagonal band $d^3\Pi_u^-, \nu' = 0 \rightarrow a^3\sum_g^+, \nu'' = 0$. The population of excited energy levels, determined from the relative line intensities, was used to derive the rotational temperature of the ground state of hydrogen molecule. The boundary between the cathode sheath and negative glow region is determined using Stark polarization spectroscopy of the hydrogen Balmer alpha line.

Primary authors

Prof. Gordana Majstorovic (University of Defence, Military Academy) Dr Milica Vasiljevic (University of Belgrade, Faculty of Physics) Prof. Djordje Spasojevic (University of Belgrade, Faculty of Physics)

Presentation materials