【摘要】 介绍了用于研究尘埃等离子体中波的直流放电的尘埃等离子体装置 ,该装置能产生长约 30 cm、直径约 8.4cm的尘埃等离子体柱。在等离子体中加入尘埃后 ,朗缪尔探针的饱和电流明显降低。尘埃所带负电量与电机转速成正比 ,可达到等离子体负电量的 40 %。更多还原

【Abstract】 A DC discharge dusty plasma device used for study of waves in dusty plasma is introduced. A dusty plasma column is produced with about 30cm in length and about 8.4cm in diameter. The electron saturation current of Langmuir probe is obviously decreasing while the dust grains are present in the plasma. The negative charge on dust grains is directly proportional to the rotaion rate of the dispenser. And the dust grains carry up to 40% of the negative charges in the whole plasma.更多还原