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Initial Values
The Initial Values node allows you to set an initial guess for the mean electron energy, the reduced electric field, and the initial condition for a Lagrange multiplier.
Initial Values
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Enter an Initial mean electron energy ε0 (SI unit: V). The default is 2 V.
This value should be equal to the mean electron energy of the first parameter in the parametric sweep. COMSOL Multiphysics constructs an initial guess at the EEDF by assuming a Maxwellian distribution function with the specified mean electron energy.
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Enter an Initial reduced electric field E/N0 (SI unit: V·m2). The default is 1 Td and this rarely needs to be changed. This is the initial reduced electric field used to compute the distribution function.
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Enter an Initial condition for lam λ0 (SI unit: m3/s). The default is 1e-21 and this rarely needs to be changed. This value is an initial guess for a Lagrange multiplier, which is used to enforce a normalization constraint on the EEDF. Physically, the Lagrange multiplier represents the reduced net ionization frequency and is obtained such that equation Equation 3-2 is satisfied.