Introduce gas trap pump ( 2)

the vacuum pump gas capture using low temperature appearance.
and thus reduced the number of gas molecules inside the container and achieve suction vacuum pump, gas pump is a kind of capture that gas molecules by adsorption or condensation in the pump on the inner surface. There are several types.

adsorption pump is mainly rely on the surface of the adsorbent ( Such as porous material) Physical adsorption to extraction of a trapping type vacuum pump.

getter pump a getter is used to capture the vacuum pump of the gas chemical combination way. Getter usually exists in the form of block or accumulation of fresh film metals or alloys. Sublimation that belong to this type of pump.

getter ion pump in order to achieve the purpose of extraction has the following several types. Cause the ionization gas through the electromagnetic field or electric field effect of adsorption on a getter material appearance.
in order to realize the extraction of a vacuum pump. Evaporation ion pump: pump inside the ionized gas adsorption in intermittent or continuous way sublimation ( Or evaporation) Aspirated material and coated on the inner wall of the pump.
in order to realize a vacuum pump suction purpose. Sputtering ion pump: pump in ionized gas adsorption in the cathode sputtering continuously spread out getter material.
pump at low temperature