Main objective: To build up physical models suitable to study the main physic aspects behind the hybrid sources.
Description: This work package will be focused on performing a basic physics investigation into the most relevant physical phenomena involved in hybrid plasma sources. Two plasma sources having different operational parameters will be developed using materials coming from hollow cathode and Radio frequency excitation. These sources will be instrumented and will undergo a deep experimental campaign to characterize power absorption, plasma evolution, and plasma uniformity, as function of experimental conditions. Theoretical models will be identified to model: (i) plasma wave interaction in the bulk and in the sheath region, (ii) transport phenomena, (iii) nonlinear phenomena.