3B Scientific U18575 Teltron Fine Beam Electron Tube S
Category: Toys & Games | Learning & Education | Science Kits & Toys
Price: $872.00
Model number: U18575
Shipping weight: 1.8 pounds

About the product: The Fine Beam Tube is for designed for examining
The deflection of electron beams in a uniform magnetic field using a pair of Helmholtz coils
The quantitative determination of the specific charge of the electron
The Neon-filled glass tube is integrated with an electron beam system consisting of an indirectly heated oxide cathode
The Neon atoms are ionized along the electron path and produce a well-defined, visible fluorescent beam

Technical details: Other Documentation User Manual
Size:Fine Beam Electron Tube S The Fine Beam Tube is for designed for examining the deflection of electron beams in a uniform magnetic field using a pair of Helmholtz coils and for the quantitative determination of the specific charge of the electron. The Neon-filled glass tube is integrated with an electron beam system consisting of an indirectly heated oxide cathode, a Wehnelt cylinder, integrated measurement marks for parallax-free measurements, and a perforated anode. The Neon atoms are ionized along the electron path and produce a well-defined, visible fluorescent beam. For operation, the tube needs to be mounted on the Control Unit. Topics which can be experimentally investigated: deflection of electrons in uniform magnetic field, determination of specific charge (e/m) of an electron, electron optics and fundamental atomic properties, collisional excitation of gases. Gas filling: Neon, Gas pressure: 1.3 x 10-5 hectopascals. Filament voltage: 4 – 10 volts AC/DC. Filament current: 300 - 450 milliamphere. Wehnelt voltage: 0 to -50 volts. Anode voltage: 200 - 300 volts. Anode current: greater than 0.3 milliamphere. Circular path diameter: 20 - 120 mm. Division spacing: approximate 20 mm. Tube diameter: approximate 160 mm.