Study of the transport parameters of cloud lightning plasmas

Three spectra of cloud lightning have been acquired in Tibet (China) using a slitless grating spectrograph The electrical conductivity, the electron thermal conductivity, and the electron thermal diffusivity of the cloud lightning, for the first time, are calculated by applying the transport theory of air plasma In addition, we investigate the change behaviors of parameters (the temperature, the electron density, the electrical conductivity, the electron thermal conductivity, and the electron thermal diffusivity) in one of the cloud lightning channels The result shows that these parameters decrease slightly along developing direction of the cloud lightning channel Moreover, they represent similar sudden change behavior in tortuous positions and the branch of the cloud lightning channel (C) 2010 American Institute of Physics [doi 10 1063/1 3498675]