A teaching tape for LQ-09, Gas Ionization Bounds and Counting Model

Gas Ionization Threshold and Single-Quantum Energy Conservation

Walkthrough of Einstein's 1905 §9 threshold bound h*nu >= J_mol, count relations j = L/(R*beta*nu), and historical checks.

Open LQ-09 and follow it

Where it starts

The settings the tape begins from, under the constant set modern-si-2019. Values are the model's own, not the laboratory control's display: a radius of 5e-7 is half a micrometre.
SettingValue
Light Frequency (frequency)2901590000000000
Ionization Energy (ionizationEnergyEv)10
Optical Power (incidentPower)0.000001
Absorption Fraction (absorptionEfficiency)0.5
Illumination Duration (duration)1
Ionization Yield (declaredFraction)1

What it changes, and what to expect

  1. Set Optical Power (incidentPower) to 0.000002 changes what the run starts from

    Proportional Energy Accounting

    Doubling absorbed light energy L doubles the count of ionized molecules: j = L / (R*beta*nu).

    What the author recorded that a reader should see here.
    QuantityExpectedUnder
    incidentPower0.000002 Wmodern-si-2019

These are the values the tape's author recorded, not a result this page computed. Nothing here runs the instrument. Set them yourself in LQ-09 and compare what it gives you.

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