CASTRAP
The CAS cryogenic ion trap is a versatile tool that extends CAS laboratory domain to ion-molecule interaction at cold temperatures. Closed cycle cryostat allows us to reach temperatures lower than 4 K for the neutral buffer gas. The radio frequency 22 pole ion trap assures very well defined trapping and cooling conditions for the ions from the lightest ion H+ (mass 1) up to several hundred mass units. Differential pumping and complete separation of fore-vacuum of the ion source and the interaction regions allows studies with minimal influence of the ion precursor gas to the ion-neutral of choice interactions.
![original](/7544609/original-1608201769.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjc1NDQ2MDl9--16d391691f5d50d3a52dfe407dce4c163269be8e)
In memory of Professor Dieter Gerlich (29.09.1944-15.10.2020), for starting the CAS Ion Trap Laboratory and for his continuous inspiration.
![Dieter Gerlich mounting the first parts of the ion trap in our lab.](/7544556/original-1608202421.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjc1NDQ1NTZ9--86ca2ecf7b21229fcc9b825244a33de8229934ed)
![Example of determination of a reaction rate coefficient for the reaction of CO+ and CO2+ with H2 and D2 from 10 to 300 K.](/7871467/original-1651761079.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjc4NzE0Njd9--077ff22242033e4105170c0154620570f75b979a)