A numerical and theoretical study of the multipactor appearance in the presence of a DC parallel electric field

Adrien Plaçais (1, 2) , Julien Hillairet (1) , Mohamed Belhaj (2) , Jérôme Puech (3)

1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
2 DPHY, ONERA, Université de Toulouse [Toulouse]
3 CNES - Centre National d'Études Spatiales [Toulouse]

In this paper, we study the appearance of the multipactor in a simple system with a bottom plate holding a static potential Vd. We developed a numerical model to compute the evolution of the multipactor threshold as a function of the potential. We identify the nature of the resonant modes that appear at different Vd using resonance theory. Then, we use it to compute the theoretical threshold of the structure. As we use a very simplistic electron emission model to identify the multipactor modes, we compute the threshold in a more realistic configuration in a second step.

Mots clés: Atomic and molecular collisions; Resonance theory; Multipactor effect; Electrostatics; Particle-in-cell method; Dielectric materials

Domaines: Sciences de l'ingénieur [physics]; Physique [physics]

Adrien Plaçais, Julien Hillairet, Mohamed Belhaj, Jérôme Puech. A numerical and theoretical study of the multipactor appearance in the presence of a DC parallel electric field. AIP Advances, 2022, 12 (2), pp.025022. ⟨10.1063/5.0062499⟩. ⟨hal-03584916⟩