Fig. 6: Direction (not strength) of the electrical field in the Penning gauge as in Fig. 5. Grey: electron space charge. From Wutz Handbuch Vakuumtechnik by K. Jousten (ed.), Vieweg Verlag.
Fig. 6: Direction (not strength) of the electrical field in the Penning gauge as in Fig. 5. Grey:electron space charge. From Wutz Handbuch Vakuumtechnik by K. Jousten (ed.), Vieweg Verlag.