Apparatus of Work Function & Specific Charge of Electron for Electromagnetism Physics Lab

This Apparatus of Work Function & Specific Charge of Electron for Electromagnetism Physics Labs is designed for studying thermionic emission, vacuum electron devices, electron motion in electric and magnetic fields, and fundamental electron properties. The apparatus utilizes a vacuum diode with a pure tungsten filament to investigate electron emission characteristics and determine the work function of metallic materials. It also demonstrates the influence of magnetic fields on electron trajectories, enabling the study of magnetron operating principles and the determination of the electron charge-to-mass ratio (e/m). The system provides an effective platform for modern physics, vacuum electronics, and electron dynamics experiments.

Physics Lab Experiments from Atico Exports.

Experimental Principle and Content

• Study Thermionic Electron Emission from Heated Metals
• Investigate the V-I Characteristics of a Vacuum Diode
• Verify the Schottky Effect
• Determine the Work Function of a Metal
• Measure the Work Function Using the Richardson Straight-Line Method
• Study Electron Motion in Electric and Magnetic Fields
• Demonstrate the Operating Principle of a Magnetron
• Determine the Specific Charge (e/m) of Electrons
• Analyze the Influence of Magnetic Fields on Electron Trajectories

Educational Objectives

• Understand the Principles of Thermionic Emission
• Learn the Concept and Significance of Metal Work Function
• Study Electron Behavior in Vacuum Devices
• Investigate the Interaction Between Charged Particles and Magnetic Fields
• Understand the Operating Principles of Magnetron Devices
• Develop Practical Skills in Electronic Measurements and Data Analysis

Vacuum Diode :

• Pure Tungsten Filament

Filament Current :

• Range: 0.40–0.80 A
• Accuracy: 0.01 A

Anode Voltage :

• DC 0–120 V
• Accuracy: 0.1 V

Magnetization Coil :

• Inner Radius: 24.0 mm
• Outer Radius: 36.0 mm
• Length: 18.0 mm
• Number of Turns: 800

Magnetization Current :

• Range: 0–0.80 A

Standard Supply

• Main Unit × 1
• Vacuum Diode × 1
• Protective Housing × 1
• Magnetization Coil × 1
• Connection Wires × 8
• Instruction Manual × 1

• Measure the Work Function of Metals
• Study V-I Characteristics of a Vacuum Diode
• Demonstrate the Operating Principle of a Magnetron
• Determine the Charge-to-Mass Ratio (e/m) of Electrons