Sodium-lithium Based Evaporative Ion Getter for Medium to High Vacuum Applications

Ion getters play a critical role in maintaining the performance and longevity of vacuum systems used in medium to high-voltage applications, such as electron microscopes, particle accelerators, high-voltage vacuum switches, and various other high-energy devices. These getters are employed to remove residual gases, including reactive and inert species that can compromise the vacuum quality and interfere with the operation of high-voltage equipment. The ion getter technology typically involves the use of materials that ionize gases and subsequently trap them through chemical or physical adsorption, ensuring the preservation of a high-quality vacuum. This paper describes the construction criteria and process for the sodium-lithium based ion getter.