Q-branch of fulcher-α diagonal bands for determination of the axial temperature distribution in the cathode sheath region of hydrogen and hydrogen-argon abnormal glow discharge

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

“…The temperature obtained from Q branch of the Fulcher- band may be considered as the most reliable for the temperature estimation, see details in Ref. [6]. Now, we investigate a possibility of using R branch of the d 3  + ,'=0→ a 3  + , =0 molecular system for temperature measurement in hydrogen Grimm GD.…”

“…is the statistical weight of the (n', ν', N') rovibronic level caused by nuclear spin and the symmetry with respect to the permutation of the nuclei ('a' or 's'), while H N' N" are the HL factors see [4] and references therein. The rotational temperature T0 (n,) of the ground state, determined from the rotational population density distribution in an excited (n,) state in the framework of the model discussed in [6], can be considered as a valid estimation of the ground state rovibronic temperatutre, i.e., H2 gas temperature. The recalculated temperature T0 is 2 times larger than the rotational temperature of excited state d 3 u , see in [6,9].…”

“…The rotational temperature T0 (n,) of the ground state, determined from the rotational population density distribution in an excited (n,) state in the framework of the model discussed in [6], can be considered as a valid estimation of the ground state rovibronic temperatutre, i.e., H2 gas temperature. The recalculated temperature T0 is 2 times larger than the rotational temperature of excited state d 3 u , see in [6,9]. For the estimation of the CS region thickness we employ the same technique previously described in [6].…”

“…The recalculated temperature T0 is 2 times larger than the rotational temperature of excited state d 3 u , see in [6,9]. For the estimation of the CS region thickness we employ the same technique previously described in [6]. The electric field strength distribution is determined by fitting the experimentally obtained profiles of the -polarized hydrogen Balmer H line with a suitable model function, see Figure 4.…”

“…The experiment was realized in a hydrogen discharge and further details can be found in Ref. [6]. The axial intensity distribution of radiation has been observed side-on through the anode slot, see Figure 1.…”