Behavior of Atomic and Molecular Hydrogen by Using the Measurements of Hα Line Emission in the GAMMA 10 Tandem Mirror

The effective rate coefficients for atomic and molecular hydrogen are calculated based on collisionalradiative model and the rate coefficients of several atomic and molecular processes. The results indicate that the effect of atomic hydrogen is dominant for Hα line emission and the effect of molecular hydrogen for the ionization rate is larger than that of atomic hydrogen at the parameter range of the GAMMA 10 central cell. Moreover the atomic and molecular hydrogen densities are estimated by Hα line emission. From the evaluation of the ionization rate by using the estimated neutral hydrogen densities, it is necessary to consider the behavior of molecular hydrogen for analysis of the particle balance in GAMMA 10.