Apparatus of Franck-Hertz Experiment Mercury Tube

This Frank-Hertz experiment system is designed to demonstrate the quantized energy levels of atoms through electron-atom collisions. It enables students to verify the existence of atomic energy levels, determine the excitation and ionization potentials of mercury atoms, and study the influence of operating parameters on the experimental results. The system supports both manual and automatic measurements with real-time data display and USB data acquisition for advanced analysis. Note: Oscilloscope is not included. Physics Lab Experiments from Atico Exports.
System Components :

• Frank-Hertz (Mercury Tube) Tester
• Temperature Control Adapter
• Mercury Tube Heating Furnace
• Connecting Cables

Experiments :

• Understand the Design and Operating Principles of the Frank-Hertz Experiment System.
• Measure the First Excitation Potential of Mercury Atoms and Verify the Existence of Atomic Energy Levels.
• Study the Effects of Filament Voltage, Furnace Temperature, and Retarding Voltage on Experimental Results.
• Measure Higher Excited Energy Levels of Mercury Atoms.
• Measure the Ionization Potential of Mercury Atoms.
• Perform Manual Measurement by Recording Plate Current Variation with Acceleration Voltage.
• Perform Automatic Measurement with Real-Time Data Acquisition and Curve Display.
• Measure the First Excitation Potential with High-Precision Temperature Control and Observe More Than 12 Characteristic Peaks.
• Measure the 6³P₁, 6³P₂, and 6¹P₁ Energy Levels of Mercury Atoms.
• Export Experimental Data in TXT Format for Computer-Based Analysis.

Filament Voltage (VF) :

• 0–6.5 V
• Continuously adjustable

Retarding Voltage (Vg2a) :

• 0–15 V
• Continuously adjustable

First Grid to Cathode Voltage (Vg1k) :

• 0–12 V
• Continuously adjustable

Second Grid to Cathode Voltage (Vg2k) :

• 0–65 V

Microcurrent Measurement Range :

• 0–1000 nA
• Automatic range selection
• Accuracy: ±1%

Display :

• 7-inch TFT LCD touch screen
• 800 × 480 resolution
• Simultaneous display of four voltages and measured current

Mercury Tube Dimensions :

• Diameter: 18 mm
• Height: 50 mm

Heating Furnace :

• PTC heat-conduction heating with PID intelligent temperature controller
• Temperature accuracy: ±1°C
• Power: 300 W

Input Power :

• 220 V AC
• 50 Hz

USB Interface :

• Synchronous data transfer in TXT format

Signal Output :

• BNC signal output
• BNC synchronization output for external oscilloscope connection