For purchase of this item, please read the instructions.
Volume 13: Pages 339-343, 2000
The One‐Perturber Approximation
Chatsworth, Bwlch, Powys LD3 7RQ U.K.
The article describes recent work on damping of radiation from an atom due to collisions with a free electron as occurs in a thermal plasma. The code stgff has been added to the package of codes used in the work of the Opacity Project. It makes calculations for emission or absorption of radiation by a system of (atom + electron): free‐free transitions and spectral‐line broadening in the one‐perturber approximation. Some illustrative results are presented.
Keywords: free‐free transitions, spectral‐line broadening, impact approximation, one‐perturber approximation
Received: May 19, 2000; Published online: December 15, 2008