Negative-ion surface production in hydrogen plasmas: Determination of the negative-ion energy and angle distribution function using mass spectrometry

denum with trapped hydrogen concentration of up to 50 %. The binding hydrogen energy inside the target was supposed to be about 1.0 eV.. The planar surface barrier for

The work function of SPS emitters is predomi- nantly reduced by adding cesium vapour from an external evaporator through the holes or pores to the emitter

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

In order to clarify the situation we have carried out a theoretical and experimental study which shows that the only important effect of adding SF6 to the

KxO, %XI.. One can see that coulomb collisions increase the number both a slow and fast electrons. Significant increase of' the number of fast electrons with increasiag

Several previous works /I -3/ made i n the afterglow of helium, neon and argon ~ o s i - tive column show out that in the initial period of the plasma decay, when the

Study of the plasma near the plasma electrode by probes and photodetachment in ECR-driven negative ion sourceM. Svarnas, Stéphane Bechu,

Dans ce mémoire on considère l'espace C(X,Y) des applications continues d'un espace topologique X vers un autre Y, muni de quelques topologies classiques telles que: la