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Originally added for a simple Gaede pump modelling, Molflow can treat certain facets as "Moving parts", and add a certain velocity vector to the normal rebounce directions of molecules hitting a facet. The velocity vector itself can be set globally through the Tools/Moving parts menu:

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Synrad+ and Molflow+ were meant to be use together as a package. The latest beta versions allow you to do a SR simulation in Synrad+, then import the absorbed flux map to Molflow+, convert it to a desorption map, and do a standard vacuum simulation, this time having the walls as outgassing source. Follow the steps below for the whole procedure.

Part 1: Synrad+ simulation

In this example, we will use a short sample tube which receives SR light from an upstream dipole.

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