clean up

in spectrochemical analysis
https://doi.org/10.1351/goldbook.C01100
A process caused by
sputtering
,
trapping
(or adsorbing) metallic atoms, gas atoms or molecules on the walls of the vessel or
anode
. This has the effect of reducing the gas pressure in sealed lamps, and may be useful for cleaning up or gettering unwanted gases.
Source:
Orange Book, 2nd ed., p. 149 [Terms] [Book]