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Ideal Vacuum Diode Comprehensive Experiment

BEX-8510
Ideal Vacuum Diode Comprehensive Experiment

The BEX-8510 experiment apparatus, centered on an ideal vacuum diode within an energized solenoid, enables precise measurement of the electron work function of a tungsten cathode. Its coaxial cylindrical anode design ensures a uniform temperature field and minimizes edge effects. The experiment provides comprehensive training in multiple measurement methods—including Richardson line analysis and the magnetic control method—while offering valuable practice in advanced data processing techniques.

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lab equipment list for physics china

Features of BEX-8510 Ideal Vacuum Diode Comprehensive Experiment

  • Dedicated Diode Mounting Unit
    Independently mounted vacuum diode with transparent safety shield

  • Integrated Solenoid Coil
    560-turn solenoid for precise magnetic field alignment

  • High-Precision Measurement Unit
    Microampere-level amplifier with 4.5-digit display (0.1μA-20mA)

  • Stable Voltage Supply
    Linear tunable power supply (0-160.0V DC), ripple-free

  • Advanced Data Acquisition
    Dual PASCO interfaces for real-time data collection

Applications of BEX-8510 Ideal Vacuum Diode Comprehensive Experiment

  • Determination of Metal Electron Work Function

  • Electron Motion in Combined Electric and Magnetic Fields (e/m Measurement)

  • Investigation of Fermi-Dirac Distribution

  • Current-Voltage Characterization of Ideal Vacuum Diodes

Applications of BEX-8510 Ideal Vacuum Diode Comprehensive Experiment

Specifications of BEX-8510 Ideal Vacuum Diode Comprehensive Experiment

No.

Part

Specifications

1

Main Console

  • Anode Voltage: 0-160 V DC tunable

  • Anode Current Range: 0-20 mA

  • Filament Current: 0-800 mA tunable

2

DC Power Supply

  • Voltage: 0-12.0 V tunable

  • Current: 0-1.0 A tunable

3

Vacuum Diode

  • Cathode: Pure tungsten

  • Anode: Nickel cylinder

  • Filament Current Range: 0.50-0.80 A

4

Solenoid

560 turns


Configuration List

#

Parts

Model

Qty.

1

Metal Electron Work Function Apparatus

BEM-5715

1

2

Tunable DC Power Supply

BEM-5055

1

3

Ideal Vacuum Diode Assembly

BEM-5716

1

4

Solenoid Coil

BC-201026

1

5

2mm Red Banana Leads (sheathed)

BC-104087

2

6

2mm Black Banana Leads (sheathed)

BC-104088

2

7

4mm Red Banana Lead

BC-105084

1

8

4mm Black Banana Lead

BC-105083

1

9

4mm Black Banana Lead (sheathed)

BC-105073

1

10

4mm Red Banana Lead (sheathed)

BC-105074

1

11

Power Cord

BC-105075

1

12

8-pin Interface Cable

BC-105077

2


Experimental Data Examples

Experiment 1: Work Function Determination


Table 1: Anode current characteristics versus voltage and temperature


Anode current characteristics versus voltage and temperature

Work Function Determination Experiment


Table 2: Richardson analysis parameters


Richardson analysis parameters

Richardson analysis parameters experimental data examples


Experiment 2: Charge-to-Mass Ratio Measurement


Charge-to-Mass Ratio Measurement


Experiment 3: Fermi-Dirac Distribution Study


Fermi-Dirac Distribution Study

Fermi-Dirac Distribution Study Experimental Data Examples


Experiment 4: Diode I-V Characterization


Diode I-V Characterization Experimental Data Examples

Recommended Options

  • UI-5400 Capstone Data Acquisition Software

  • UI-5000 850 Universal Interface

  • PS-3211 Wireless Voltage Sensor (2 units)

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Hangzhou Brolight Technology Co., Ltd.
Hangzhou Brolight Technology Co., Ltd.
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