Complete Properties of Electrons Apparatus

Measure the electron charge to mass ratio (e/m) and study the electric and magnetic properties of an electron beam with this compact device based on a built-in CRT. Included are all the accessories needed to explore electron beam deflection, focusing, and electron behavior in transverse and axial magnetic fields. The Complete Properties of Electrons Apparatus is self-contained. All high voltages are enclosed internally for safety. The built-in displays eliminate the need to connect external multimeters. The Complete Properties of Electrons Apparatus is all that is required for these experiments. No additional accessories are needed.

Description

Measure the electron charge to mass ratio (e/m) and study the electric and magnetic properties of an electron beam with this compact device based on a built-in CRT. Included are all the accessories needed to explore electron beam deflection, focusing, and electron behavior in transverse and axial magnetic fields. The Complete Properties of Electrons Apparatus is self-contained. All high voltages are enclosed internally for safety. The built-in displays eliminate the need to connect external multimeters. The Complete Properties of Electrons Apparatus is all that is required for these experiments. No additional accessories are needed.

The instruction manual contains sample activities and sample data for the following basic experiments:
Electron behavior in an electric field
Electron deflection in a transverse electric field
Spiral electron path in a longitudinal magnetic field
Determination of e/m
Electron paths in an inhomogeneous longitudinal electric field
Electron behavior in a magnetic field
Electron deflection in a transverse magnetic field

Specifications :

CRT (8SJ31J tube on a 14-pin base):
Overall Length: 240 mm
Grid Pitch: 10 mm
Neck Diameter: 51.4 mm
Flat Screen Diameter: 75 mm

Transverse Field Coils:
Mean Diameter: 67 mm
Number of Turns: 530 per coil
Axial Field Solenoid:
Mean Diameter: 93 mm
Length: 228 mm
Number of Turns: 1,300

Power Supplies:
CRT: Cathode Voltage: -750 to -1,400 V
Focus Voltage: +200 to +400 V
Y-Deflection: ~±100 V
Magnet Supply: 0 to 9 V, 0.155 A transverse, 0 to 7.7 V, 2.0 A axial
Power Requirement: 110-V AC, 60 Hz
Grid Voltage: -4 to -80 V
Electrostatic Deflection: X-Deflection: ~±100 V
Case: Dimensions: 470 x 330 x 215 mm
Weight: ~10 kg (22 lb)

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