MCP FINE BEAM TUBE SYSTEM en Shanghái, Shanghai, China

FINE BEAM TUBE SYSTEM
ObjectsDeflection of electrons in a closed circular path inside a magnetic fieldDetermination of specific change of an electron e/m
PrinciplesThe fine beam tube is used for investigating the deflection of cathode rays in a uniform magnetic field produced by a pair of Helmholtz coils (P338001). In addition, it can also be used for quantitativedetermination of the specific charge of an electron e/m.Located inside a glass bulb with a helium residual gas atmosphere is an electron gun, which consists of an indirectly heated oxide cathode, a Wehnelt cylinder and a perforated anode. The gas atoms are ionized alongthe path of the electrons and a narrow, well-defined, luminescent beam is produced. Incorporated measurement marksfacilitate a parallax-free determination of the diameter of the circular path of the beam deflected in the magnetic field.
SYSTEM A - BASIC FINE BEAM TUBE SYSTEM
P318001