Critical Potential Tube Helium Student Series

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1000620 1000633
470162-706EA 1243.99 USD
470162-706 470162-708
Critical Potential Tube Helium Student Series
Educational Materials Physics Educational Materials Modern Physics Learning Activities
Hertz electron tube for quantitative investigations of Inelastic collisions of electrons with inert gas atoms.

Hertz electron tube for quantitative investigations of inelastic collisions of electrons with inert gas atoms, determination of ionization energies of helium, as well as resolution of the energy states of various primary and orbital angular-momentum quantum numbers.
Required but not included are the tube holder and control unit.
Control unit for operating the critical potential tubes. Equipped with an output for sawtooth acceleration voltages; adjustable upper and lower limits of the acceleration voltage. Integrated pico-ammeter amplifier for anode current measurement. Allows recording of the acceleration voltage as a function of the anode current. A slow sawtooth voltage (approx. 6 seconds per cycle) is available with an interface or XY-recorder; a sawtooth voltage with a repetition rate of 20 Hz is available for oscilloscopic observations.

Input: Anode current measurement via a BNC jack
Outputs:
Tube: Saw tooth acceleration voltage of 0--60 V, 20 Hz
Fast: Voltage signal of 0--1 V proportional to the acceleration voltage, for oscilloscopic observations
Slow: Voltage signal of 0--1 V proportional to the acceleration voltage, for recording data with an XY-recorder or interface
Anode current: Voltage signal of 0--1 V proportional to the anode current (1V/nA)
Supply voltage: 12 V AC
Dimensions: approx. 170x105x45 mm³



   
 

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