Collisions:
1. Consider the collision between Ar ion and neutral Ar atom. Its collision
cross-section is given as σi ≈ 10-14 cm2. Evaluate the collisional mean free
path in centimeters when pressure is 0.5 mTorr, 30 mTorr and 1 Torr
(temperature can be taken to be 298 K).
2.The rate constants for various electron temperatures are given in the
following table from the Lieberman textbook.
Generate a single plot (using Matlab or excel) and plot K as a function of electron
temperature for the ionization, excitation collisions (numbers 2,3 – highlighted).
Use Te to vary from 0.1 eV to 10 eV. Format the x and y axes to have log-log scale.
The plot should be properly labeled and legends for the plot should be provided.
