Experimental study of charging of dust grains in the presence of energetic electrons

The role of hot electrons in charging dust grains is investigated a two-temperature hydrogen plasma. A variety particles are introduced into the system and secondary electron emission (SEE) from each has been reported. cylindrical Langmuir probe used for determining plasma parameters Faraday cup connected to an electrometer order measure current. readings confirm SEE observed tungsten low-pressure experimental device first time.