Shift of the Cut-Off Magnetic Field in Magnetrons

Autor: J. M. Rocard, R. Clerc, A. Capdevila
Rok vydání: 1969
Předmět:
Zdroj: Electronic Structures in Solids ISBN: 9781489962508
DOI: 10.1007/978-1-4899-6537-0_30
Popis: The motion of electrons in crossed electric and magnetic fields has been studied by many authors. A.W. HULL [1], in particular has investigated the special case of cylindrical magnetrons. He has shown that, in the case of a small cathode, (filament), in the axis of an anode of radius R, at potential V, the cut-off magnetic field is given by the relation $${B_C} = \sqrt {\frac{{8m}}{e}} \quad \frac{{{V^{1/2}}}}{R}$$ (1) where m and e are the mass and the charge of an electron.
Databáze: OpenAIRE