تغير تيار التفريغ مع المجال المغناطيسي المستعرض في أنبوب التفريغ المستطيل للغازات الجزيئية

(0-150 ) N2 CO2 (0.75 7.5 ). . The variation of discharge current with a transverse magnetic fields (0-150 Gauss) has been studied in the positive column of glow discharge in N2 and CO2 with the pressures range from (0.75 to 7.5 torrs). It is found that the current gradually rises with the increase of magnetic field, and then attains a maximum value at particular value of the magnetic field which is the same for all the two gases. It was found that this value is independent of the pressure for the initial discharge current, and then gradually decreases.