3B Scientific™ Premium Heater for Franck-Hertz Experiment

Description

Demonstrates quantization of energy released by free electrons in collisions with mercury.

• Also determines excitation energy of mercury resonance line (61S0 – 63P1), which is 4.9 eV
• Highly evacuated electron tube containing mercury in a heating chamber
• Heat electron tube in chamber to generate required mercury vapour pressure to achieve high probability of collisions between electrons and mercury atoms
• Electron tube with plane parallel electrode system consists of an indirectly heated oxide cathode with aperture, grid and collecting electrode
• Front plate printed with tube symbol
• Electric heating chamber with continuous temperature control and digital temperature display shows actual and set-point temperatures
• Lacquered metal housing has two observation windows, opening with spring clip for thermometer and thermally insulated carrying handle
• Integrated microcontroller and Pt100 thermocouple for temperature measurement and control
• Electrical Requirements: 115V, 50/60Hz

Specifications:

• Heater voltage: 4 to 12V
• Grid voltage: 0 to 70V
• Suppressor voltage: 1.5V approx.
• Tube dimensions: 130 x 26mm dia. approx.
• Heater output: 400w
• Temperature range: 160° to 240°C
• Temperature constancy: ±1°C approx.
• Overall dimensions: 335 x 180 x 165mm³ approx.
• Weight: 5.6kg approx.

Specifications

• Weight (Metric): 5.6 kg approx.
• Voltage: 115 V