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Implement superelastic electron-collision plasma reaction #192

@BangShiuh

Description

@BangShiuh

Abstract

Adding superelastic electron-collision plasma reaction. The steps to calculate this rate are,

  1. Calculate the inverse cross-section
$$\sigma^{inv} = \frac{\epsilon + U}{\epsilon} \sigma(\epsilon + U)$$

U is the threshold of inelastic collision.
3. Calculate the rate coefficient

$$k^{inv}_k = \gamma \int^\inf_0 \epsilon \sigma_k^{inv} f_0 d\epsilon$$

Motivation

This type of reaction is important for low-temperature plasma, especially when the electron energy is low. The idea is that collisions between low-energy electrons and the excited species can heat the electron. This is implemented in BOLSIG+.

Possible Solutions

Option1: Similar to the electron-collsion-plasma reaction
Option2: Use reversible reaction. This will require a customized reverse reaction rate coefficient. We need evalKrFromStruct (similar to evalFromStruct). https://github.com/BangShiuh/cantera/tree/collision-reaction-reverse

References

https://www.bolsig.laplace.univ-tlse.fr/manual.html

Links to related Pull Requests, GitHub Issues, Users' Group topics, or other relevant material.

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