Abstract
The variation of discharge current in a transverse magnetic field (0-300 G) has been studied in the positive column of a glow discharge in air, carbon dioxide, hydrogen, helium and neon within the pressure range of 80 to 200 mtorr. The current gradually rises with the increase of the magnetic field, then attains a maximum value at a particular value of the magnetic field which is the same for all the gases and independent of pressure for the same initial discharge current, and then gradually decreases. The value of the magnetic field at which the discharge current is maximum is found to be proportional to the square root of the initial discharge current and the maximum value of the current is inversely proportional to pressure in all the gases; utilizing Beckman's expression for the axial electric field and the radial electron density distribution in a transverse magnetic field, a mathematical expression for the discharge current and its variation with magnetic field has been deduced. The theoretical results are in qualitative agreement with experimental observations and the causes of discrepancy have been attributed to (a) limitations of Beckman's expression for electron density distribution and axial electric field and (b) absence of data for fraction of energy loss in collision and that of the electron temperature at E/P values at which the present observations have been made.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
